Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2018	Apr. 27, 2018
Document Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Entity Registrant Name	WOLVERINE WORLD WIDE INC /DE/
Entity Central Index Key	0000110471
Current Fiscal Year End Date	--12-29
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		94,757,025

Consolidated Condensed Statements of Operations and Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Income Statement [Abstract]
Revenue	$ 534.1	$ 591.3
Cost of goods sold	306.2	352.0
Restructuring costs	0.0	4.6
Gross profit	227.9	234.7
Selling, general and administrative expenses	163.7	180.2
Restructuring and other related costs	0.0	20.0
Environmental and other related costs	2.7	0.0
Operating profit	61.5	34.5
Other expenses:
Interest expense, net	7.2	8.9
Other expense (income), net	(0.6)	4.4
Total other expenses	6.6	13.3
Earnings before income taxes	54.9	21.2
Income tax expense	8.3	4.4
Net earnings	46.6	16.8
Less: net earnings (loss) attributable to noncontrolling interests	(0.1)	0.1
Net earnings attributable to Wolverine World Wide, Inc.	$ 46.7	$ 16.7
Net earnings per share (see Note 3):
Basic	$ 0.49	$ 0.17
Diluted	$ 0.48	$ 0.17
Comprehensive income	$ 46.1	$ 20.1
Less: comprehensive income attributable to noncontrolling interests	0.2	0.4
Comprehensive income attributable to Wolverine World Wide, Inc.	$ 45.9	$ 19.7
Cash dividends declared per share	$ 0.08	$ 0.06

Consolidated Condensed Balance Sheets - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017
Current assets:
Cash and cash equivalents	$ 257.1	$ 481.0	$ 304.1
Accounts receivable, less allowances: March 31, 2018: $33.6; December 30, 2017: $31.5; April 1, 2017: $39.3	295.3	271.3	287.7
Inventories:
Finished products, net	278.7	265.2	341.4
Raw materials and work-in-process, net	11.8	11.5	15.1
Total inventories	290.5	276.7	356.5
Prepaid expenses and other current assets	37.5	45.3	39.5
Total current assets	880.4	1,074.3	987.8
Property, plant and equipment:
Gross cost	394.5	391.1	429.7
Accumulated depreciation	(260.8)	(254.4)	(284.6)
Property plant and equipment net	133.7	136.7	145.1
Other assets:
Goodwill	429.3	429.8	425.1
Indefinite-lived intangibles	604.5	604.5	678.5
Amortizable intangibles, net	75.6	77.0	81.4
Deferred income taxes	4.5	4.3	2.8
Other	76.0	72.4	67.1
Total other assets	1,189.9	1,188.0	1,254.9
Total assets	2,204.0	2,399.0	2,387.8
Current liabilities:
Accounts payable	97.2	162.3	113.8
Accrued salaries and wages	17.5	40.0	21.7
Other accrued liabilities	120.0	122.0	101.0
Current maturities of long-term debt	41.2	37.5	41.2
Borrowings under revolving credit agreements and other short-term notes	0.8	0.5	2.4
Total current liabilities	276.7	362.3	280.1
Long-term debt, less current maturities	630.3	744.6	769.5
Accrued pension liabilities	142.0	142.2	143.5
Deferred income taxes	84.4	84.2	159.5
Other liabilities	113.3	110.5	39.7
Wolverine World Wide, Inc. stockholders’ equity:
Common Stock - par value $1, authorized 320,000,000 shares; shares issued (including shares in treasury): March 31, 2018: 106,825,575 shares; December 30, 2017: 106,405,449 shares; April 1, 2017: 105,735,062 shares	106.8	106.4	105.7
Additional paid-in capital	163.1	149.2	117.1
Retained earnings	1,039.4	992.2	1,026.0
Accumulated other comprehensive loss	(84.1)	(75.2)	(78.1)
Cost of shares in treasury: March 31, 2018: 12,048,223 shares; December 30, 2017: 10,345,141 shares; April 1, 2017: 8,827,675 shares	(273.7)	(223.0)	(183.2)
Total Wolverine World Wide, Inc. stockholders’ equity	951.5	949.6	987.5
Noncontrolling interest	5.8	5.6	8.0
Total stockholders’ equity	957.3	955.2	995.5
Total liabilities and stockholders’ equity	$ 2,204.0	$ 2,399.0	$ 2,387.8

Consolidated Condensed Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017
Statement of Financial Position [Abstract]
Accounts receivable allowance	$ 33.6	$ 31.5	$ 39.3
Common stock, par value	$ 1	$ 1	$ 1
Common stock, shares authorized	320,000,000	320,000,000	320,000,000
Common stock, shares issued (including shares in treasury)	106,825,575	106,405,449	105,735,062
Treasury shares	12,048,223	10,345,141	8,827,675

Consolidated Condensed Statements of Cash Flow - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
OPERATING ACTIVITIES
Net earnings	$ 46.6	$ 16.8
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation and amortization	7.8	9.2
Deferred income taxes	(0.5)	(3.6)
Stock-based compensation expense	7.9	7.7
Pension contribution	(0.3)	(0.2)
Pension and SERP expense	1.5	3.7
Restructuring and other related costs	0.0	24.6
Cash payments related to restructuring costs	(3.1)	(11.7)
Environmental and other related costs, net of cash payments	(0.9)	0.0
Other	0.3	(2.4)
Changes in operating assets and liabilities:
Accounts receivable	(23.9)	(23.7)
Inventories	(13.6)	(11.4)
Other operating assets	8.2	9.7
Accounts payable	(65.3)	(36.1)
Income taxes payable	(0.9)	0.0
Other operating liabilities	(25.1)	(13.4)
Net cash used in operating activities	(61.3)	(30.8)
INVESTING ACTIVITIES
Additions to property, plant and equipment	(3.4)	(11.1)
Other	(0.7)	(0.7)
Net cash used in investing activities	(4.1)	(11.8)
FINANCING ACTIVITIES
Net borrowings (payments) under revolving credit agreements and other short-term notes	0.3	(0.6)
Payments on long-term debt	(111.3)	(7.5)
Cash dividends paid	(5.8)	(5.8)
Purchases of common stock for treasury	(42.5)	(11.5)
Purchases of shares under employee stock plans	(7.9)	(4.9)
Proceeds from the exercise of stock options	8.1	6.5
Net cash used in financing activities	(159.1)	(23.8)
Effect of foreign exchange rate changes	0.6	0.7
Decrease in cash and cash equivalents	(223.9)	(65.7)
Cash and cash equivalents at beginning of the year	481.0	369.8
Cash and cash equivalents at end of the period	$ 257.1	$ 304.1

Summary of Significant Accounting Policies	3 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations Wolverine World Wide, Inc. (the “Company”) is a leading designer, marketer and licensor of a broad range of quality casual footwear and apparel; performance outdoor and athletic footwear and apparel; children’s footwear; industrial work shoes, boots and apparel; and uniform shoes and boots. The Company’s portfolio of owned and licensed brands includes: Bates^®, Cat^®, Chaco^®, Harley-Davidson^®, Hush Puppies^®, HyTest^®, Keds^®, Merrell^®, Saucony^®, Sperry^®, Stride Rite^® and Wolverine^®. Licensing and distribution arrangements with third parties extend the global reach of the Company’s brand portfolio. The Company also operates a consumer-direct division to market both its own brands and branded footwear and apparel from other manufacturers, as well as a leathers division that markets Wolverine Performance Leathers™. Basis of Presentation The accompanying unaudited consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for a complete presentation of the financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for fair presentation have been included in the accompanying financial statements. For further information, refer to the consolidated financial statements and footnotes included in the Company’s fiscal 2017 Form 10-K. As described in Note 2, the Company adopted Accounting Standards Updates (“ASU”) 2017-07 at the beginning of the first quarter of fiscal 2018. As part of the adoption, the prior period non-service cost components of pension expense have been reclassified to other expense to conform with the new presentation. In addition, as described in Note 15, the Company realigned certain components within its operating segments. All prior period disclosures have been restated to reflect the new reportable operating segments. Fiscal Year The Company’s fiscal year is the 52 or 53-week period that ends on the Saturday nearest to December 31. Fiscal years 2018 and 2017 both have 52 weeks. The Company reports its quarterly results of operations on the basis of 13-week quarters for each of the first three fiscal quarters and a 13 or 14-week period for the fiscal fourth quarter. Revenue Recognition Effective December 31, 2017, the Company adopted ASU 2014-09, Revenue from Contracts with Customers, using the modified retrospective method. Under the modified retrospective method, the impact of applying the standard is recognized as a cumulative effect on retained earnings. The adoption of ASU 2014-09 did not have a material impact on the Company’s consolidated financial position, results of operations, equity or cash flows as of the adoption date or for the three months ended March 31, 2018. Comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. For additional information, refer to Note 6. Cost of Goods Sold Cost of goods sold includes the actual product costs, including inbound freight charges and certain outbound freight charges, purchasing, sourcing, inspection and receiving costs. Warehousing costs are included in selling, general and administrative expenses. Seasonality The Company’s business is subject to seasonal influences that can cause significant differences in revenue, earnings and cash flows from quarter to quarter; however, the differences have followed a consistent pattern in recent years.

New Accounting Standards

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

New Accounting Standards

NEW ACCOUNTING STANDARDS

The Financial Accounting Standards Board (“FASB”) issued the following ASUs that have been adopted by the Company during fiscal 2018. The following is a summary of the effect of adoption of these new standards.



Standard	Description	Effect on the Financial Statements or Other Significant Matters
ASU 2014-09, Revenue from Contracts with Customers (as amended by ASUs 2015-04, 2016-08, 2016-10, 2016-12 and 2017-10)	The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance also amends the required disclosures of the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers.	The Company adopted the new revenue standard using the modified retrospective method at the beginning of the first quarter. The adoption of ASU 2014-09 did not have a material impact on the Company’s consolidated financial position, results of operations, equity or cash flows as of the adoption date or for the three months ended March 31, 2018. See Note 6 for the impact of the adoption of this standard, as well as additional disclosures around the Company’s revenue from contracts with customers.
ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities	Enhances the reporting model for financial instruments to provide users of financial statements with more decision-useful information. This ASU addresses certain aspects of recognition, measurement, presentation and disclosure of financial statements.	The adoption of the new standard in fiscal 2018 did not have, nor does the Company believe it will have, a material impact on the accounting for its financial assets and financial liabilities.
ASU 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	Sponsors of benefit plans would be required to present service cost in the same line item or items as other current employee compensation costs, and present the remaining components of net benefit cost in one or more separate line items outside of income from operations, while also limiting the components of net benefit cost eligible to be capitalized to service cost.	The Company now presents non-service pension costs as a component of Other expense (income), net. Non-services costs of $1.9 million for the quarter ended April 1, 2017 have been retrospectively adjusted to Other expense (income) to conform with the new presentation.
ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities	Seeks to improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities and to reduce the complexity of and simplify the application of hedge accounting. This ASU eliminates the requirement to separately measure and report hedge ineffectiveness.	The Company reclassified $0.2 million of unrecognized losses related to its cross currency swap from accumulated other comprehensive income to retained earnings. This reclassification was effective as of the beginning of fiscal 2018.
ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income	Allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. Adoption of this ASU will eliminate the stranded tax effects resulting from the Tax Cuts and Jobs Act and will improve the usefulness of information reported to financial statement users.	The Company reclassified $7.9 million of stranded tax effects resulting from the Tax Cuts and Jobs Act related to its cross currency swap and unamortized actuarial losses related to its pension plans from accumulated other comprehensive income to retained earnings. This reclassification was effective as of the beginning of fiscal 2018.

The FASB has issued the following ASUs that have not yet been adopted by the Company. The following is a summary of the planned adoption period and anticipated impact of adopting these new standards.



Standard	Description	Planned Period of Adoption	Effect on the Financial Statements or Other Significant Matters
ASU 2016-02, Leases	The core principle is that a lessee shall recognize a lease asset and lease liability in its statement of financial position. A lessee should recognize a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term.	Q1 2019	The Company is evaluating the impacts of the new standard on its existing leases.
ASU 2016-13, Measurement of Credit Losses on Financial Instruments	Seeks to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date by replacing the incurred loss impairment methodology in current U.S. GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to determine credit loss estimates.	Q1 2020	The Company is evaluating the impacts of the new standard on its existing financial instruments, including trade receivables.

- Definition

The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=66092750

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22583-107794

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
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-Paragraph 13
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-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305

+ Details

Earnings Per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share

EARNINGS PER SHARE

The Company calculates earnings per share in accordance with FASB Accounting Standards Codification (“ASC”) Topic 260, Earnings Per Share (“ASC 260”). ASC 260 addresses whether instruments granted in share-based payment transactions are participating securities prior to vesting and, therefore, need to be included in the earnings allocation in computing earnings per share under the two-class method. Under the guidance in ASC 260, the Company’s unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid, are participating securities and must be included in the computation of earnings per share pursuant to the two-class method.

The following table sets forth the computation of basic and diluted earnings per share.



	Quarter Ended
(In millions, except per share data)	March 31, 2018			April 1, 2017
Numerator:
Net earnings attributable to Wolverine World Wide, Inc.	$	46.7		$	16.7
Adjustment for earnings allocated to non-vested restricted common stock	(0.9		)	(0.4		)
Net earnings used in calculating basic and diluted earnings per share	$	45.8		$	16.3
Denominator:
Weighted average shares outstanding	95.7			97.0
Adjustment for non-vested restricted common stock	(2.0		)	(2.5		)
Shares used in calculating basic earnings per share	93.7			94.5
Effect of dilutive stock options	1.9			1.5
Shares used in calculating diluted earnings per share	95.6			96.0
Net earnings per share:
Basic	$	0.49		$	0.17
Diluted	$	0.48		$	0.17

For the quarters ended March 31, 2018 and April 1, 2017, options relating to 101,321 and 1,872,281 shares of common stock outstanding, respectively, have not been included in the denominator for the computation of diluted earnings per share because they were anti-dilutive.

Goodwill and Indefinite-Lived Intangibles

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Indefinite-Lived Intangibles

GOODWILL AND INDEFINITE-LIVED INTANGIBLES

The changes in the carrying amount of goodwill and indefinite-lived intangibles are as follows:



(In millions)	Goodwill			Indefinite-lived intangibles		Total
Balance at December 31, 2016	$	424.3		$	678.5	$	1,102.8
Foreign currency translation effects	0.8			—		0.8
Balance at April 1, 2017	$	425.1		$	678.5	$	1,103.6

Balance at December 30, 2017	$	429.8		$	604.5	$	1,034.3
Foreign currency translation effects	(0.5		)	—		(0.5		)
Balance at March 31, 2018	$	429.3		$	604.5	$	1,033.8

In the fourth quarter of fiscal 2017, as a result of its annual impairment testing, the Company recognized a $68.6 million impairment charge for the Sperry^® trade name. If the operating results for Sperry^® were to decline in future periods, the Company may need to record an additional non-cash impairment charge. The carrying value of the Company’s Sperry^® trade name indefinite-lived intangible asset was $518.2 million as of March 31, 2018.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Accounts Receivable (Notes)

3 Months Ended

Mar. 31, 2018

Accounts Receivables [Abstract]

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

ACCOUNTS RECEIVABLE

The Company has an agreement with a financial institution to sell selected trade accounts receivable on a recurring, nonrecourse basis that expires in the fourth quarter of fiscal 2018. Under the agreement, up to $150.0 million of accounts receivable may be sold to the financial institution and remain outstanding at any point in time. After the sale, the Company does not retain any interests in the accounts receivable and removes them from its consolidated condensed balance sheet, but continues to service and collect the outstanding accounts receivable on behalf of the financial institution. The Company recognizes a servicing asset or servicing liability, initially measured at fair value, each time it undertakes an obligation to service the accounts receivable under the agreement. The fair value of this obligation resulted in a nominal servicing liability for all periods presented. For receivables sold under the agreement, 90% of the stated amount is paid for in cash to the Company at the time of sale, with the remainder paid to the Company at the completion of the collection process. The following is a summary of the stated amount of accounts receivable that was sold as well as fees charged by the financial institution.



	Quarter Ended
(In millions)	March 31, 2018		April 1, 2017
Accounts receivable sold	$	112.6	$	149.6
Fees charged	0.5		0.5

The fees charged are recorded in other expense. Net proceeds of this program are classified in operating activities in the consolidated condensed statements of cash flows. This program reduced the Company's accounts receivable by $71.0 million, $70.1 million and $89.6 million as of March 31, 2018, December 30, 2017 and April 1, 2017, respectively.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Revenue From Contracts With Customers (Notes)

3 Months Ended

Mar. 31, 2018

Revenue From Contracts With Customers [Abstract]

Revenue From Contract With Customer [Text Block]

REVENUE FROM CONTRACTS WITH CUSTOMERS

Adoption of ASC Topic 606, "Revenue from Contracts with Customers"

The Company has adopted ASU 2014-09, Revenue from Contracts with Customers, using the modified retrospective method applied to all contracts as of the date of application. The Company elected the practical expedient to not adjust customer consideration for the effects of a financing component given, at contract inception, the Company’s customers are expected to pay for goods in one year or less. The Company also elected the practical expedient to expense costs associated with obtaining customer contracts given the associated performance obligation is less than one year. The Company has elected the practical expedient to treat shipping and handling activities that occur after control of the good transfers to the customer as fulfillment activities.

Revenue Recognition and Performance Obligations

Revenue is recognized upon the transfer of promised goods or services to customers, in an amount that reflects the expected consideration to be received in exchange for those goods or services. The Company identifies the performance obligation in the contract, determines the transaction price, allocates the transaction price to the performance obligations, and recognizes revenue upon completion of the performance obligation. Revenue is recognized net of variable consideration and any taxes collected from customers, which are subsequently remitted to governmental authorities.

Control of the Company's goods and services, and associated fixed revenue, are transferred to customers at a point in time. The Company’s contract revenue consist of wholesale revenue and consumer-direct revenue. Wholesale revenue is recognized for products sourced by the Company when control transfers to the customer generally occurring upon the purchase, shipment or delivery of branded products by or to the customer. Consumer-direct includes eCommerce revenue that is recognized for products sourced by the Company when control transfers to the customer once the related goods have been shipped and retail store revenue recognized at time of sale. The point of purchase or shipment was evaluated to best represent when control transfers based on the Company’s right of payment for the goods, the customer’s legal title to the asset, the transfer of physical possession and the customer has the risks and rewards of the goods.

The Company holds agreements to license symbolic intellectual property with minimum guarantees or fixed consideration. The Company recognizes the fixed consideration using time as an appropriate measure of progress and recognizes royalties only when cumulative royalties exceed the minimum guarantee. The Company believes time is the appropriate measure of progress and best represents a faithful depiction of the transfer of goods under the contract. The Company has $52.2 million of remaining fixed transaction price under its license agreements as of March 31, 2018. The Company expects to recognize the fixed amount per the terms of its contracts over the course of time through December 2024. The Company has elected to omit the remaining variable consideration under its license agreements given the Company recognizes revenue equal to what it has the right to invoice and that amount corresponds directly with the value to the customer of the Company’s performance to date.

The Company provides disaggregated revenue by sales channel including the wholesale and consumer-direct sales channels reconciled to the Company’s reportable operating segments. The wholesale channel includes royalty revenues given the similarity in the Company’s oversight and management, customer base, the performance obligation (footwear and apparel goods) and point in time completion of the performance obligation.



	Quarter Ended March 31, 2018						Quarter Ended April 1, 2017
(In millions)	Wholesale		Consumer-Direct		Total		Wholesale		Consumer-Direct		Total
Wolverine Outdoor & Lifestyle Group	$	201.8	$	21.0	$	222.8	$	208.5	$	22.9	$	231.4
Wolverine Boston Group	194.2		24.8		219.0		213.0		51.0		264.0
Wolverine Heritage Group	69.7		3.4		73.1		73.4		2.3		75.7
Other	17.8		1.4		19.2		14.7		5.5		20.2
Total	$	483.5	$	50.6	$	534.1	$	509.6	$	81.7	$	591.3

Reserves for Variable Consideration

Revenue is recorded at the net sales price (“transaction price”), which includes estimates of variable consideration for which reserves are established. Components of variable consideration include trade discounts and allowances, product returns, customer markdowns, customer rebates and other sales incentives relating to the sale of the Company’s products. These reserves, as detailed below, are based on the amounts earned, or to be claimed on the related sales. These estimates take into consideration a range of possible outcomes which are probability-weighted in accordance with the expected value method for relevant factors such as current contractual and statutory requirements, specific known market events and trends, industry data and forecasted customer buying and payment patterns. Overall, these reserves reflect the Company’s best estimates of the amount of consideration to which it is entitled based on the terms of the respective underlying contracts. Revenue recognized during the quarter ended March 31, 2018 related to the Company’s contract liabilities was nominal.

The Company’s contract balances are as follows:



(In millions)	March 31, 2018		December 30, 2017
Contract balances:
Product returns reserve	$	13.3	$	12.6
Customer rebates liability	10.6		10.4
Customer markdowns reserve	6.3		6.4
Other sales incentives reserves	4.2		3.3
Customer advances liability	5.4		6.7

The amount of variable consideration which is included in the transaction price may be constrained, and is included in the net sales price only to the extent that it is probable that a significant reversal in the amount of the cumulative revenue recognized under the contract will not occur in a future period. Actual amounts of consideration ultimately received may differ from initial estimates. If actual results in the future vary from initial estimates, the Company subsequently adjusts these estimates, which would affect net revenue and earnings in the period such variances become known.

Trade Discounts and Allowances

The Company provides customers with discounts which include trade discounts and allowances that are explicitly stated in contracts and are recorded as a reduction of revenue in the period the related product revenue is recognized.

Product Returns

Consistent with industry practice, the Company offers limited product return rights for damaged or other return scenarios. The Company estimates the amount of product sales that may be returned by customers and records this estimate as a reduction of revenue in the period the related product revenue is recognized, and a reduction to trade receivables, net on the consolidated condensed balance sheet. The Company believes there is sufficient current and historical information to record an estimate of the expected value of product returns although actual returns could differ from recorded amounts.

Rebates

The Company accrues for customer rebates related to customers who purchase required volumes or meet other criteria. These reserves are established in the same period that the related revenue is recognized, resulting in a reduction of product revenue and an establishment of a current liability on the consolidated condensed balance sheet.

Markdowns

Chargebacks represent the estimated reserve resulting from commitments to sell products to the Company’s customers at prices lower than the list prices charged to customers who directly purchase the product from the Company. Customers charge the Company for the difference between what they pay for the product and the ultimate selling price to the end consumer. The reserve is established in the same period that the related revenue is recognized, resulting in a reduction of product revenue and a reduction to trade receivables, net on the consolidated condensed balance sheet.

Other Sales Incentives

The Company accrues for other customer allowances for certain customers that purchase required volumes or meet other criteria. These reserves are established in the same period that the related revenue is recognized, resulting in a reduction of product revenue and a reduction to trade receivables, net on the consolidated condensed balance sheet depending on the nature of the item.

Customer Advances

The timing of revenue recognition, billings and cash collections results in billed accounts receivable (contract assets), and customer advances (contract liabilities) on the consolidated condensed balance sheet. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. However, the Company sometimes receives advances from customers, before revenue is recognized, resulting in contract liabilities.

Debt

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Debt

DEBT

Total debt consists of the following obligations:



(In millions)	March 31, 2018			December 30, 2017			April 1, 2017
Term Loan A, due July 13, 2020	$	426.9		$	538.1		$	568.1
Senior Notes, 5.000% interest, due September 1, 2026	250.0			250.0			250.0
Borrowings under revolving credit agreements and other short-term notes	0.8			0.5			2.4
Capital lease obligation	0.4			0.5			0.5
Unamortized debt issuance costs	(5.8		)	(6.5		)	(7.9		)
Total debt	$	672.3		$	782.6		$	813.1

On September 15, 2016, the Company amended its credit agreement (as amended, the "Credit Agreement"). The Credit Agreement provided a $588.8 million term loan facility (“Term Loan A”) and a $600.0 million revolving credit facility (the “Revolving Credit Facility”), both with maturity dates of July 13, 2020. The Credit Agreement’s debt capacity is limited to an aggregate debt amount (including outstanding term loan principal and revolver commitment amounts in addition to permitted incremental debt) not to exceed $1,750.0 million, unless certain specified conditions set forth in the Credit Agreement are met. Term Loan A requires quarterly principal payments with a balloon payment due on July 13, 2020. The scheduled principal payments due over the next 12 months total $41.2 million as of March 31, 2018 and are recorded as current maturities of long-term debt on the consolidated condensed balance sheet.

The Revolving Credit Facility allows the Company to borrow up to an aggregate amount of $600.0 million, which includes a $200.0 million foreign currency subfacility under which borrowings may be made, subject to certain conditions, in Canadian dollars, British pounds, euros, Hong Kong dollars, Swedish kronor, Swiss francs and such additional currencies as are determined in accordance with the Credit Agreement. The Revolving Credit Facility also includes a $50.0 million swingline subfacility and a $50.0 million letter of credit subfacility. The Company had outstanding letters of credit under the Revolving Credit Facility of $2.5 million as of March 31, 2018, December 30, 2017 and April 1, 2017, respectively. These outstanding letters of credit reduce the borrowing capacity under the Revolving Credit Facility.

The interest rates applicable to amounts outstanding under Term Loan A and to U.S. dollar denominated amounts outstanding under the Revolving Credit Facility will be, at the Company’s option, either (1) the Alternate Base Rate plus an Applicable Margin as determined by the Company’s Consolidated Leverage Ratio, within a range of 0.25% to 1.00%, or (2) the Eurocurrency Rate plus an Applicable Margin as determined by the Company’s Consolidated Leverage Ratio, within a range of 1.25% to 2.00% (all capitalized terms used in this sentence are as defined in the Credit Agreement). The Company has an interest rate swap arrangement that reduces the Company’s exposure to fluctuations in interest rates on its variable rate debt. At March 31, 2018, Term Loan A had a weighted-average interest rate of 3.47%.

The obligations of the Company pursuant to the Credit Agreement are guaranteed by substantially all of the Company’s material domestic subsidiaries and secured by substantially all of the personal and real property of the Company and its material domestic subsidiaries, subject to certain exceptions.

The Credit Agreement also contains certain affirmative and negative covenants, including covenants that limit the ability of the Company and its Restricted Subsidiaries to, among other things: incur or guarantee indebtedness; incur liens; pay dividends or repurchase stock; enter into transactions with affiliates; consummate asset sales, acquisitions or mergers; prepay certain other indebtedness; or make investments, as well as covenants restricting the activities of certain foreign subsidiaries of the Company that hold intellectual property related assets. Further, the Credit Agreement requires compliance with the following financial covenants: a maximum Consolidated Leverage Ratio; a maximum Consolidated Secured Leverage Ratio; and a minimum Consolidated Interest Coverage Ratio (all capitalized terms used in this paragraph are as defined in the Credit Agreement). As of March 31, 2018, the Company was in compliance with all covenants and performance ratios under the Credit Agreement.

The Company has $250.0 million of senior notes outstanding that are due on September 1, 2026 (the “Senior Notes”). The Senior Notes bear interest at 5.00% with the related interest payments due semi-annually. The Senior Notes are guaranteed by substantially all of the Company’s domestic subsidiaries.

The Company has a foreign revolving credit facility with aggregate available borrowings of $4.0 million that are uncommitted and, therefore, each borrowing against the facility is subject to approval by the lender. Borrowings against this facility were $0.8 million, $0.5 million and $1.9 million as of March 31, 2018, December 30, 2017 and April 1, 2017, respectively.

The Company has a capital lease obligation with payments scheduled to continue through February 2022.

The Company included in interest expense the amortization of deferred financing costs of $1.0 million and $0.7 million for the quarters ended March 31, 2018 and April 1, 2017, respectively.

Financial Instruments and Risk Management

3 Months Ended

Mar. 31, 2018

Investments, All Other Investments [Abstract]

Financial Instruments and Risk Management

DERIVATIVE FINANCIAL INSTRUMENTS

The Company follows FASB ASC Topic 815, Derivatives and Hedging ("ASC 815"), which is intended to improve transparency in financial reporting and requires that all derivative instruments be recorded on the consolidated condensed balance sheets at fair value by establishing criteria for designation and effectiveness of hedging relationships. The Company does not hold or issue financial instruments for trading purposes.

The Company utilizes foreign currency forward exchange contracts to manage the volatility associated primarily with U.S. dollar inventory purchases made by non-U.S. wholesale operations in the normal course of business. These foreign currency forward exchange hedge contracts extend out to a maximum of 545 days, 356 days and 362 days, as of March 31, 2018, December 30, 2017 and April 1, 2017, respectively. The Company also utilizes foreign currency forward exchange contracts that are not designated as hedging instruments to manage foreign currency translation exposure. Foreign currency derivatives not designated as hedging instruments are offset by foreign exchange gains or losses resulting from the underlying exposures of foreign currency denominated assets and liabilities.

The Company has an interest rate swap arrangement, which unless otherwise terminated, will mature on July 13, 2020. This agreement, which exchanges floating rate for fixed rate interest payments over the life of the agreement without the exchange of the underlying notional amounts, has been designated as a cash flow hedge of the debt. The notional amount of the interest rate swap arrangement is used to measure interest to be paid or received and do not represent the amount of exposure to credit loss.

The Company has a cross currency swap to minimize the impact of exchange rate fluctuations. The hedging instrument, which, unless otherwise terminated, will mature on September 1, 2021, has been designated as a hedge of a net investment in a foreign operation. The Company will pay 2.75% on the euro-denominated notional amount and receive 5.00% on the U.S. dollar notional amount, with an exchange of principal at maturity. Changes in fair value related to movements in the foreign currency exchange spot rate are recorded in accumulated other comprehensive income (loss) (“AOCI”), offsetting the currency translation adjustment related to the underlying net investment that is also recorded in AOCI. All other changes in fair value are recorded in interest expense.

The notional amounts of the Company’s derivative instruments are as follows:



(Dollars in millions)	March 31, 2018		December 30, 2017		April 1, 2017
Foreign exchange contracts:
Hedge contracts	$	198.9	$	162.7	$	164.6
Non-hedge contracts	5.5		—		—
Interest rate swaps	442.0		446.9		494.6
Cross currency swap	106.4		106.4		106.4

The recorded fair values of the Company’s derivative instruments are as follows:



(In millions)	March 31, 2018			December 30, 2017			April 1, 2017
Financial assets:
Foreign exchange contracts - hedge	$	0.9		$	0.3		$	3.2
Interest rate swaps	2.3			—			0.3
Financial liabilities:
Foreign exchange contracts - hedge	$	(3.1	)	$	(5.0	)	$	(0.5	)
Interest rate swaps	—			(0.3		)	(3.7		)
Cross currency swap	(19.0		)	(13.8		)	(0.7		)

Hedge effectiveness on the foreign exchange contracts is evaluated by the hypothetical derivative method. Any hedge ineffectiveness is reported within the cost of goods sold line item in the consolidated condensed statements of operations. Hedge ineffectiveness was not material to the Company’s consolidated condensed financial statements for the quarters ended March 31, 2018 and April 1, 2017. If, in the future, the foreign exchange contracts are determined to be ineffective hedges or terminated before their contractual termination dates, the Company would be required to reclassify into earnings all or a portion of the unrealized amounts related to the cash flow hedges that are currently included in AOCI within stockholders’ equity.

The differential paid or received on the interest rate swap arrangements is recognized as interest expense. In accordance with ASC 815, the Company has formally documented the relationship between the interest rate swaps and the variable rate borrowings, as well as its risk management objective and strategy for undertaking the hedge transaction. This process included linking the derivative to the specific liability or asset on the balance sheet. The Company also assessed at the hedges’ inception, and continues to assess on an ongoing basis, whether the derivatives used in the hedging transaction are highly effective in offsetting changes in the cash flows of the hedged item. The effective portion of unrealized gains (losses) is deferred as a component of AOCI and will be recognized in earnings at the time the hedged item affects earnings. Any ineffective portion of the change in fair value will be immediately recognized as a component of interest expense. Hedge ineffectiveness was not material to the Company’s consolidated condensed financial statements for the quarters ended March 31, 2018 and April 1, 2017.

Hedge effectiveness on the cross currency swap is assessed using the spot method. In accordance with ASC 815, the Company has formally documented the relationship between the cross currency swap and the Company’s investment in its euro-denominated subsidiary, as well as its risk management objective and strategy for undertaking the hedge transaction. This process included linking the derivative to its net investment on the balance sheet. The Company also assessed at the hedges’ inception, and continues to assess on an ongoing basis, whether the derivative used in the hedging transaction is highly effective in offsetting changes in expected cash flows of the hedged item. The effective portion of unrealized gains (losses) is deferred as a component of AOCI and will be recognized in earnings at the time the hedged item affects earnings. Any ineffective portion of the change in fair value will be immediately recognized as a component of interest expense. The Company's cross currency swap has remained effective since inception throughout the quarter ending March 31, 2018.

Stock-Based Compensation	3 Months Ended
Stock-Based Compensation	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	STOCK-BASED COMPENSATION The Company accounts for stock-based compensation in accordance with the fair value recognition provisions of FASB ASC Topic 718, Compensation – Stock Compensation. The Company recognized compensation expense of $7.9 million and $7.7 million and related income tax benefits of $1.6 million and $2.6 million for grants under its stock-based compensation plans for the quarters ended March 31, 2018 and April 1, 2017, respectively. The Company grants restricted stock or units (“restricted awards”), performance-based restricted stock or units (“performance awards”) and stock options under its stock-based compensation plans. During the quarter ended March 31, 2018, the Company issued 502,775 restricted awards at a weighted average grant date fair value of $31.87 per award. During the quarter ended April 1, 2017, the Company issued 730,081 restricted awards at a weighted average grant date fair value of $22.92 per award. During the quarter ended March 31, 2018, the Company issued 335,315 performance awards at a weighted average grant date fair value of $31.85 per award. During the quarter ended April 1, 2017, the Company issued 488,918 performance awards at a weighted average grant date fair value of $25.02 per award.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Retirement Plans

3 Months Ended

Mar. 31, 2018

Compensation and Retirement Disclosure [Abstract]

Retirement Plans

RETIREMENT PLANS

The following is a summary of net pension and Supplemental Executive Retirement Plan (“SERP”) expense recognized by the Company.



	Quarter Ended
(In millions)	March 31, 2018			April 1, 2017
Service cost pertaining to benefits earned during the period	$	1.6		$	1.8
Interest cost on projected benefit obligations	4.1			4.4
Expected return on pension assets	(5.0		)	(4.9		)
Net amortization loss	0.8			2.4
Net pension expense	$	1.5		$	3.7

The non-service cost components of net pension expense is recorded in the Other expense (income), net line item on the consolidated condensed financial statements.

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Company maintains management and operational activities in overseas subsidiaries, and its foreign earnings are taxed at rates that are different than the U.S. federal statutory income tax rate. A significant amount of the Company’s earnings are generated by its Canadian, European and Asian subsidiaries and, to a lesser extent, in jurisdictions that are not subject to income tax. On December 22, 2017, the Tax Cuts and Jobs Act (“TCJA”) was enacted which significantly changes U.S. corporate income tax laws by, among other things, reducing the U.S. corporate income tax rate to 21% starting in 2018 and creating a territorial tax system with a one-time mandatory tax on previously deferred foreign earnings of U.S. subsidiaries. The amounts recorded in fiscal 2017 due to the enactment of the TCJA continue to be the Company's best estimate based on the current information and guidance available at this time, and represent provisional estimates of the transition tax, remeasurement of deferred tax accounts and deferred tax liability on future dividends associated with the TCJA, and as allowed under SAB 118, will be finalized on or before the due date of the U.S. corporate tax return in October 2018. As a result of the TCJA, the Company now intends to repatriate cash held in foreign jurisdictions and has recorded a deferred tax liability related to estimated state taxes and foreign withholding taxes on the future dividends received in the U.S. from the foreign subsidiaries. The Company intends to permanently reinvest all non-cash undistributed earnings outside of the U.S. However, if these non-cash undistributed earnings were repatriated, the Company would be required to accrue and pay applicable U.S. taxes and withholding taxes payable to various countries. It is not practicable to estimate the amount of the deferred tax liability associated with these non-cash unremitted earnings due to the complexity of the hypothetical calculation. The Company’s effective tax rates for the quarters ended March 31, 2018 and April 1, 2017 were 15.1% and 20.7%, respectively. The lower effective tax rate in the current year period reflects a reduction in U.S. income tax expense due to a lower U.S. corporate tax rate following enactment of the TCJA and favorable discrete items. The Company is subject to periodic audits by domestic and foreign tax authorities. Currently, the Company is undergoing routine periodic audits in both domestic and foreign tax jurisdictions. It is reasonably possible that the amounts of unrecognized tax benefits could change in the next 12 months as a result of the audits; however, any payment of tax is not expected to be significant to the consolidated condensed financial statements. The Company is no longer subject to U.S. federal, state and local or non-U.S. income tax examinations by tax authorities for years before 2013 in the majority of tax jurisdictions.

Accumulated Other Comprehensive Income (Loss)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

AOCI represents net earnings and any revenue, expenses, gains and losses that, under U.S. GAAP, are excluded from net earnings and recognized directly as a component of stockholders’ equity.

The change in AOCI during the quarters ended March 31, 2018 and April 1, 2017 is as follows:



(In millions)	Foreign currency translation adjustments			Derivatives				Pension adjustments				Total
Balance of AOCI as of December 31, 2016	$	(53.5	)	$	2.8			$	(30.4	)		$	(81.1	)
Other comprehensive income (loss) before reclassifications ⁽¹⁾	2.7			(0.6		)		—				2.1
Amounts reclassified from AOCI	—			(0.7		)	⁽²⁾	2.4			⁽³⁾	1.7
Income tax expense (benefit)	—			—				(0.8		)		(0.8		)
Net reclassifications	—			(0.7		)		1.6				0.9
Net current-period other comprehensive income (loss) ⁽¹⁾	2.7			(1.3		)		1.6				3.0
Balance of AOCI as of April 1, 2017	$	(50.8	)	$	1.5			$	(28.8	)		$	(78.1	)

Balance of AOCI as of December 30, 2017	$	(32.7	)	$	(13.9	)		$	(28.6	)		$	(75.2	)
Other comprehensive income (loss) before reclassifications ⁽¹⁾	(0.2		)	(3.2		)		—				(3.4		)
Amounts reclassified from AOCI	—			2.7			⁽²⁾	0.8			⁽³⁾	3.5
Income tax expense (benefit)	—			(0.8		)		(0.1		)		(0.9		)
Net reclassifications	—			1.9				0.7				2.6
Net current-period other comprehensive income (loss) ⁽¹⁾	(0.2		)	(1.3		)		0.7				(0.8		)
Reclassifications to retained earnings ⁽⁴⁾	—			(2.1		)		(6.0		)		(8.1		)
Balance of AOCI as of March 31, 2018	$	(32.9	)	$	(17.3	)		$	(33.9	)		$	(84.1	)


⁽¹⁾	Other comprehensive income (loss) is reported net of taxes and noncontrolling interest.


⁽²⁾	Amounts related to foreign currency derivatives are included in cost of goods sold. Amounts related to interest rate swaps and the cross currency swap are included in interest expense.


⁽³⁾	Amounts reclassified are included in the computation of net pension expense.


⁽⁴⁾	Amounts reclassified to retained earnings upon adoption of ASU 2017-12 and ASU 2018-02.

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e689-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669619-108580

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e640-108580

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e716-108580

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e709-108580

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e637-108580

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=66004124&loc=d3e681-108580

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

Fair Value Measurements (Notes)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Disclosures [Text Block]

FAIR VALUE MEASUREMENTS

The Company follows FASB ASC Topic 820, Fair Value Measurements and Disclosures (“ASC 820”), which provides a consistent definition of fair value, focuses on exit price, prioritizes the use of market-based inputs over entity-specific inputs for measuring fair value and establishes a three-tier hierarchy for fair value measurements. ASC 820 requires fair value measurements to be classified and disclosed in one of the following three categories:



Level 1:		Fair value is measured using quoted prices (unadjusted) in active markets for identical assets and liabilities.

Level 2:		Fair value is measured using either direct or indirect inputs, other than quoted prices included within Level 1, which are observable for similar assets or liabilities.

Level 3:		Fair value is measured using valuation techniques in which one or more significant inputs are unobservable.

Recurring Fair Value Measurements

The following table sets forth financial assets and liabilities measured at fair value in the consolidated condensed balance sheets and the respective pricing levels to which the fair value measurements are classified within the fair value hierarchy.



	Fair Value Measurements
	Quoted Prices With Other Observable Inputs (Level 2)
(In millions)	March 31, 2018			December 30, 2017			April 1, 2017
Financial assets:
Derivatives	$	3.2		$	0.3		$	3.5
Financial liabilities:
Derivatives	$	(22.1	)	$	(19.1	)	$	(4.9	)

The fair value of foreign currency forward exchange contracts represents the estimated receipts or payments necessary to terminate the contracts. The interest rate swaps are valued based on the current forward rates of the future cash flows. The fair value of the cross currency swap is determined using the current forward rates and changes in the spot rate.

Fair Value Disclosures

The Company’s financial instruments that are not recorded at fair value consist of cash and cash equivalents, accounts and notes receivable, accounts payable, borrowings under revolving credit agreements and other short-term and long-term debt. The carrying amount of these financial instruments is historical cost, which approximates fair value, except for the debt. The carrying value and the fair value of the Company’s debt, excluding capital leases, are as follows:



(In millions)	March 31, 2018		December 30, 2017		April 1, 2017
Carrying value	$	671.9	$	782.1	$	812.6
Fair value	681.4		802.5		816.6

The fair value of the fixed rate debt was based on third-party quotes (Level 2). The fair value of the variable rate debt was calculated by discounting the future cash flows to its present value using a discount rate based on the risk-free rate of the same maturity (Level 3).

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Litigation and Contingencies

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Litigation and Contingencies

LITIGATION AND CONTINGENCIES

Litigation

The Company operated a leather tannery in Rockford, Michigan from the early 1900s through 2009 (the “Tannery”). The Company also owns a parcel on House Street in Plainfield township that the Company used for the disposal of Tannery byproducts until about 1970 (the "House Street" site). Beginning in the late 1950s, the Company used 3M Company’s Scotchgard™ in its processing of certain leathers at the Tannery. Until 2002 when 3M changed its Scotchgard™ formula, Tannery byproducts disposed of by the Company at the House Street site and other locations may have contained PFOA and/or PFOS, two chemicals in the family of compounds known as per- and polyfluoroalkyl substances (together, “PFAS”). PFOA and PFOS help provide non-stick, stain-resistant, and water-resistant qualities, and were used for many decades in commercial products like firefighting foams and metal plating, and in common consumer items like food wrappers, microwave popcorn bags, pizza boxes, Teflon™, carpets, and Scotchgard™.

The United States Centers for Disease Control and Prevention has concluded that studies of the health effects of PFOA and PFOS are “inconsistent and inconclusive,” but in May 2016 the Environmental Protection Agency (“EPA”) announced a lifetime health advisory level of 70 parts per trillion ("ppt") combined for PFOA and PFOS. Lifetime health advisories, while not enforceable, serve as guidance and are benchmarks for determining if concentrations of chemicals in tap water from public utilities are safe for public consumption. On January 9, 2018, the Michigan Department of Environmental Quality (“MDEQ”) announced it developed a drinking water criterion of 70 ppt combined for PFOA and PFOS, which sets an official state standard for acceptable concentrations of these contaminants in groundwater used for drinking water purposes. This combined criterion took effect January 10, 2018.

The Company has been served with two regulatory actions including a civil action filed by the MDEQ under the federal Resource Conservation and Recovery Act of 1976 (“RCRA”), and a Unilateral Administrative Order issued by the EPA under the Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA”) Section 106. The Company has also been served with individual lawsuits and two putative class action lawsuits.

Regulatory and Civil Actions of EPA and MDEQ

On January 10, 2018, the MDEQ filed a civil action against the Company under the federal RCRA alleging that the Company’s past and present handling, storage, treatment, transportation and/or disposal of solid waste at the Company’s properties has contributed to the disposal of solid wastes that was done in a way that resulted in releases of PFAS at levels that resulted in detections exceeding applicable Michigan cleanup criteria for PFOA and PFOS.

The MDEQ Action seeks to require the Company to investigate the location and extent of PFAS in the environment, develop and implement plans for the continued sampling and analysis of impacts to drinking water wells from PFAS released or disposed of by the Company, and provide alternative drinking water supplies to homes impacted by PFAS for which the Company is allegedly responsible. The MDEQ Action further seeks to require the Company to connect users of drinking water wells to municipal drinking water supplies to address allegedly unacceptable risks posed by a release or threat of release of PFAS attributable to the Company. The Company is working with the MDEQ to analyze the House Street and other relevant disposal sites, test nearby residential drinking water wells and coordinate communications to impacted homeowners. The Company’s current remediation efforts have included, amongst other items, providing alternate drinking water to impacted homes, including bottled water and water filtration systems.

On January 10, 2018, the EPA entered a Unilateral Administrative Order (the “Order”) under Section 106(a) of CERCLA, 42 U.S.C. § 9606(a). The effective date of the Order was February 1, 2018. The Order pertains to the Company's Tannery and House Street sites and directs the Company to conduct specified removal actions to abate actual or threatened releases of hazardous substances at or from the sites. On February 1, 2018, the Company filed its Notice of Intent to Comply with the EPA Order, which outlined the Company’s position on certain aspects of the proposed Order. In its response, the Company has agreed to comply with the terms of the Order, but has identified inaccuracies and shortcomings in the Order that challenge the legal basis for the Order. Pursuant to the Order, in April 2018, the Company submitted to the EPA its draft removal work plans for performing the removal actions at the Tannery and House Street sites. The Company has also provided the EPA with other submittals required by the Order, including a Sampling and Analysis Plan, Health and Safety Plan, Quality Assurance Project Plan, monthly progress reports and other technical reports.

The Company discusses its reserve for remediation costs in the environmental liabilities section below.

Individual Litigation Actions

Individual lawsuits as well as two putative class action lawsuits have been filed against the Company that raise a variety of claims, including claims related to property, remediation, and human health effects. Assessing potential liability with respect to the putative class actions and individual lawsuits at this time, however, is difficult. The putative class actions and individual lawsuits were only recently filed and there is minimal direct and relevant precedent for these types of claims related to PFAS. In addition, the science regarding the human health effects of PFAS exposure in the environment remains inconclusive and inconsistent, thereby creating additional uncertainties. Due to these factors, combined with the complexities and uncertainties of litigation, the Company is unable to conclude that adverse verdicts resulting from the class actions and individual actions are probable, and therefore no amounts are currently reserved for these claims. The Company intends to continue to vigorously defend itself against these claims.

Other Litigation

The Company is also involved in litigation incidental to its business and is a party to legal actions and claims, including, but not limited to, those related to employment and intellectual property. Some of the legal proceedings include claims for compensatory as well as punitive damages. While the final outcome of these matters cannot be predicted with certainty, considering, among other things, the meritorious legal defenses available and liabilities that have been recorded along with applicable insurance, it is management’s opinion that the outcome of these items are not expected to have a material adverse effect on the Company’s consolidated financial position, results of operations or cash flows.

Environmental Liabilities

The Company has established a reserve for estimated environmental remediation costs based upon an evaluation of currently available facts with respect to each individual site. The Company incurred $0.9 million of environmental remediation costs during the quarter ended March 31, 2018 and $31.1 million during fiscal year 2017, which net of payments, resulted in a reserve of $29.2 million as of March 31, 2018. The reserve is comprised of $12.7 million that is expected to be paid in the next 12 months and is recorded as a current obligation in other accrued liabilities, with the remaining $16.5 million recorded in other liabilities and is expected to be paid over the course of up to 30 years. The Company records liabilities for remediation costs on an undiscounted basis when they are probable and reasonably estimable, generally no later than the completion of feasibility studies or the Company’s commitment to a plan of action. Liabilities for estimated costs of environmental remediation are based primarily upon third-party environmental studies, other internal analysis and the extent of the contamination and the nature of required remedial actions at each site. The Company expects that it will pay the amounts accrued over the periods of remediation for the applicable sites, currently ranging up to 30 years.

The Company's remediation activity the Tannery and other sites where the Company disposed of Tannery byproducts is largely ongoing and in the early stages. It is difficult to estimate the cost of environmental compliance and remediation given the uncertainties regarding the interpretation and enforcement of applicable environmental laws and regulations, the extent of environmental contamination and the existence of alternative cleanup methods. Developments may occur that could materially change the Company’s current cost estimates, including, but not limited to: (i) changes in the information available regarding the environmental impact of the Company’s operations and products; (ii) changes in environmental regulations, changes in permissible levels of specific compounds in drinking water sources, or changes in enforcement theories and policies, including efforts to recover natural resource damages; (iii) new and evolving analytical and remediation techniques; (iv) changes to the form of remediation; (v) success in allocating liability to other potentially responsible parties; and (vi) the financial viability of other potentially responsible parties and third-party indemnitors. For locations at which remediation activity is largely ongoing, the Company cannot estimate a possible loss or range of loss in excess of the associated established reserves for the reasons described above. The Company adjusts recorded liabilities as further information develops or circumstances change.

Minimum Royalties and Advertising Commitments

Minimum future royalty and advertising obligations for the fiscal periods subsequent to March 31, 2018 under the terms of certain licenses held by the Company are as follows:



(In millions)	2018		2019		2020		2021		2022		Thereafter
Minimum royalties	$	0.9	$	1.5	$	1.5	$	—	$	—	$	—
Minimum advertising	2.2		3.1		3.2		3.3		3.4		7.0

Minimum royalties are based on both fixed obligations and assumptions regarding the Consumer Price Index. Royalty obligations in excess of minimum requirements are based upon future sales levels. In accordance with these agreements, the Company incurred royalty expense of $0.5 million and $0.6 million for the quarters ended March 31, 2018 and April 1, 2017, respectively.

The terms of certain license agreements also require the Company to make advertising expenditures based on the level of sales of the licensed products. In accordance with these agreements, the Company incurred advertising expense of $0.8 million and $0.9 million for the quarters ended March 31, 2018 and April 1, 2017, respectively.

Business Segments

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Business Segments

BUSINESS SEGMENTS

The Company’s portfolio of brands is organized into the following three operating segments, which the Company has determined to be reportable operating segments. During the first quarter of fiscal 2018, the Kids footwear business was realigned into the Wolverine Boston Group and the multi-brand consumer-direct component is now reported within the other category. All prior period disclosures have been restated to reflect these new reportable operating segments.


•	Wolverine Outdoor & Lifestyle Group, consisting of Merrell^® footwear and apparel, Cat^® footwear, Hush Puppies^® footwear and apparel, Chaco^® footwear and Sebago^® footwear and apparel;


•	Wolverine Boston Group, consisting of Sperry^® footwear and apparel, Saucony^® footwear and apparel and Keds^® footwear and apparel, and the Kids footwear business that includes the Stride Rite^® licensed business, as well as kid’s footwear offerings from Saucony^®, Sperry^®, Keds^®, Merrell^® and Hush Puppies^®; and


•	Wolverine Heritage Group, consisting of Wolverine^® footwear and apparel, Bates^® uniform footwear, Harley-Davidson^® footwear and HyTest^® safety footwear.

The reportable segments are engaged in designing, manufacturing, sourcing, marketing, licensing and distributing branded footwear, apparel and accessories. Revenue for the reportable operating segments includes revenue from the sale of branded footwear, apparel and accessories to third-party customers; revenue from third-party licensees and distributors; and revenue from the Company’s consumer-direct businesses.

The Company also reports “Other” and “Corporate” categories. The Other category consists of the Company’s multi-branded consumer-direct retail stores, leather marketing operations and sourcing operations that include third-party commission revenues. The Corporate category consists of unallocated corporate expenses, including restructuring and other related costs, organizational transformation costs and environmental and other related costs. The Company’s operating segments are determined based on how the Company internally reports and evaluates financial information used to make operating decisions. The operating segment managers all report directly to the chief operating decision maker.

Company management uses various financial measures to evaluate the performance of the reportable operating segments. The following is a summary of certain key financial measures for the respective fiscal periods indicated.



	Quarter Ended
(In millions)	March 31, 2018			April 1, 2017
Revenue:
Wolverine Outdoor & Lifestyle Group	$	222.8		$	231.4
Wolverine Boston Group	219.0			264.0
Wolverine Heritage Group	73.1			75.7
Other	19.2			20.2
Total	$	534.1		$	591.3
Operating profit (loss):
Wolverine Outdoor & Lifestyle Group	$	52.7		$	51.6
Wolverine Boston Group	36.8			33.8
Wolverine Heritage Group	12.6			9.6
Other	0.9			0.3
Corporate	(41.5		)	(60.8		)
Total	$	61.5		$	34.5



(In millions)	March 31, 2018		December 30, 2017		April 1, 2017
Total assets:
Wolverine Outdoor & Lifestyle Group	$	462.0	$	420.4	$	443.5
Wolverine Boston Group	1,235.8		1,245.0		1,375.8
Wolverine Heritage Group	129.0		136.7		147.4
Other	42.5		42.1		50.3
Corporate	334.7		554.8		370.8
Total	$	2,204.0	$	2,399.0	$	2,387.8
Goodwill:
Wolverine Outdoor & Lifestyle Group	$	129.6	$	128.8	$	127.0
Wolverine Boston Group	283.2		284.5		281.6
Wolverine Heritage Group	16.5		16.5		16.5
Total	$	429.3	$	429.8	$	425.1

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 29
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

+ Details

Restructuring Activities

3 Months Ended

Mar. 31, 2018

Restructuring Activities [Abstract]

Restructuring Activities

RESTRUCTURING ACTIVITIES

2017 Plan

Beginning in the second quarter of fiscal 2017, the Company implemented certain organizational changes and initiated the sale of certain assets and a change to the distribution model for certain brands (the “2017 Plan”). The Company completed the 2017 Plan during the fourth quarter of fiscal 2017. The Company expects annual pretax benefits of approximately $11.0 million as a result of the 2017 Plan. Costs incurred related to the 2017 Plan have been recorded within the Corporate category. The cumulative costs incurred is $11.3 million, with $1.5 million recorded in the restructuring costs line item as a component of cost of goods sold, and $9.8 million recorded in the restructuring and other related costs line item as a component of operating expenses.

The following is a summary of the activity during the quarter ended March 31, 2018, with respect to a reserve established by the Company in connection with the 2017 Plan, by category of costs.



(In millions)	Severance and employee related			Total
Balance at December 30, 2017	$	3.3		$	3.3
Amounts paid	(1.3		)	(1.3		)
Balance at March 31, 2018	$	2.0		$	2.0

2016 Plan

On October 6, 2016, the Board of Directors of the Company approved a realignment of the Company’s consumer-direct operations (the “2016 Plan”), which resulted in the closure of certain retail stores. The Company closed 266 retail stores in connection with the 2016 Plan, which was completed during the fourth quarter of fiscal 2017. The Company expects annual pretax benefits of approximately $20.0 million as a result of the 2016 Plan. Costs incurred related to the 2016 Plan have been recorded within the Corporate category. The cumulative costs incurred is $75.1 million, with $10.2 million recorded in the restructuring costs line item as a component of cost of goods sold, and $64.9 million recorded in the restructuring and other related costs line item as a component of operating expenses.

The following is a summary of the activity during the quarters ended March 31, 2018 and April 1, 2017, with respect to a reserve established by the Company in connection with the 2016 Plan, by category of costs.



(In millions)	Severance and employee related			Impairment of property and equipment			Costs associated with exit or disposal activities			Total
Balance at December 31, 2016	$	0.8		$	—		$	1.2		$	2.0
Restructuring costs	1.5			4.5			17.9			23.9
Amounts paid	(0.6		)	—			(9.3		)	(9.9		)
Charges against assets	—			(4.5		)	(4.6		)	(9.1		)
Balance at April 1, 2017	$	1.7		$	—		$	5.2		$	6.9

Balance at December 30, 2017	$	0.3		$	—		$	1.4		$	1.7
Amounts paid	(0.3		)	—			(1.0		)	(1.3		)
Balance at March 31, 2018	$	—		$	—		$	0.4		$	0.4

2014 Plan

On July 9, 2014, the Board of Directors of the Company approved a realignment of the Company’s consumer-direct operations (the “2014 Plan”). As a part of the 2014 Plan, the Company closed 136 retail stores, consolidated certain consumer-direct support functions and implemented certain other organizational changes. The Company completed the 2014 Plan during the first quarter of fiscal 2016. Costs incurred related to the 2014 Plan have been recorded within the Corporate category. The cumulative costs incurred is $48.8 million, with $6.5 million recorded in the restructuring costs line item as a component of cost of goods sold, and $42.3 million recorded in the restructuring and other related costs line item as a component of operating expenses.

The following is a summary of the activity during the quarter ended April 1, 2017, with respect to a reserve established by the Company in connection with the 2014 Plan, by category of costs.



(In millions)	Costs associated with exit or disposal activities			Total
Balance at December 31, 2016	$	1.7		$	1.7
Amounts paid	(0.1		)	(0.1		)
Balance at April 1, 2017	$	1.6		$	1.6

Other Restructuring Activities

During the quarter ended April 1, 2017, the Company recorded restructuring costs of $0.7 million in connection with certain organizational changes. The costs associated with these restructuring activities were recorded within the Company’s Corporate category in the restructuring and other related costs line item as a component of operating expenses.

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2018
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations Wolverine World Wide, Inc. (the “Company”) is a leading designer, marketer and licensor of a broad range of quality casual footwear and apparel; performance outdoor and athletic footwear and apparel; children’s footwear; industrial work shoes, boots and apparel; and uniform shoes and boots. The Company’s portfolio of owned and licensed brands includes: Bates^®, Cat^®, Chaco^®, Harley-Davidson^®, Hush Puppies^®, HyTest^®, Keds^®, Merrell^®, Saucony^®, Sperry^®, Stride Rite^® and Wolverine^®. Licensing and distribution arrangements with third parties extend the global reach of the Company’s brand portfolio. The Company also operates a consumer-direct division to market both its own brands and branded footwear and apparel from other manufacturers, as well as a leathers division that markets Wolverine Performance Leathers™.
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for a complete presentation of the financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for fair presentation have been included in the accompanying financial statements. For further information, refer to the consolidated financial statements and footnotes included in the Company’s fiscal 2017 Form 10-K. As described in Note 2, the Company adopted Accounting Standards Updates (“ASU”) 2017-07 at the beginning of the first quarter of fiscal 2018. As part of the adoption, the prior period non-service cost components of pension expense have been reclassified to other expense to conform with the new presentation. In addition, as described in Note 15, the Company realigned certain components within its operating segments. All prior period disclosures have been restated to reflect the new reportable operating segments.
Fiscal Period, Policy [Policy Text Block]	Fiscal Year The Company’s fiscal year is the 52 or 53-week period that ends on the Saturday nearest to December 31. Fiscal years 2018 and 2017 both have 52 weeks. The Company reports its quarterly results of operations on the basis of 13-week quarters for each of the first three fiscal quarters and a 13 or 14-week period for the fiscal fourth quarter.
Revenue Recognition	Revenue Recognition Effective December 31, 2017, the Company adopted ASU 2014-09, Revenue from Contracts with Customers, using the modified retrospective method. Under the modified retrospective method, the impact of applying the standard is recognized as a cumulative effect on retained earnings. The adoption of ASU 2014-09 did not have a material impact on the Company’s consolidated financial position, results of operations, equity or cash flows as of the adoption date or for the three months ended March 31, 2018. Comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. For additional information, refer to Note 6.
Cost of Goods Sold	Cost of Goods Sold Cost of goods sold includes the actual product costs, including inbound freight charges and certain outbound freight charges, purchasing, sourcing, inspection and receiving costs. Warehousing costs are included in selling, general and administrative expenses.
Seasonality	Seasonality The Company’s business is subject to seasonal influences that can cause significant differences in revenue, earnings and cash flows from quarter to quarter; however, the differences have followed a consistent pattern in recent years.

Earnings Per Share (Policies)	3 Months Ended
Earnings Per Share (Policies)	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	The Company calculates earnings per share in accordance with FASB Accounting Standards Codification (“ASC”) Topic 260, Earnings Per Share (“ASC 260”). ASC 260 addresses whether instruments granted in share-based payment transactions are participating securities prior to vesting and, therefore, need to be included in the earnings allocation in computing earnings per share under the two-class method. Under the guidance in ASC 260, the Company’s unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents, whether paid or unpaid, are participating securities and must be included in the computation of earnings per share pursuant to the two-class method.

Financial Instruments and Risk Management (Policies)	3 Months Ended
Financial Instruments and Risk Management (Policies)	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging	The Company follows FASB ASC Topic 815, Derivatives and Hedging ("ASC 815"), which is intended to improve transparency in financial reporting and requires that all derivative instruments be recorded on the consolidated condensed balance sheets at fair value by establishing criteria for designation and effectiveness of hedging relationships.

Stock-Based Compensation (Policies)	3 Months Ended
Stock-Based Compensation (Policies)	Mar. 31, 2018
Share-based Compensation [Abstract]
Stock Based Compensation Policy	The Company accounts for stock-based compensation in accordance with the fair value recognition provisions of FASB ASC Topic 718, Compensation – Stock Compensation.

Fair Value Measurements (Policies)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements and Disclosures



Level 1:		Fair value is measured using quoted prices (unadjusted) in active markets for identical assets and liabilities.

Level 2:		Fair value is measured using either direct or indirect inputs, other than quoted prices included within Level 1, which are observable for similar assets or liabilities.

Level 3:		Fair value is measured using valuation techniques in which one or more significant inputs are unobservable.

Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share.



	Quarter Ended
(In millions, except per share data)	March 31, 2018			April 1, 2017
Numerator:
Net earnings attributable to Wolverine World Wide, Inc.	$	46.7		$	16.7
Adjustment for earnings allocated to non-vested restricted common stock	(0.9		)	(0.4		)
Net earnings used in calculating basic and diluted earnings per share	$	45.8		$	16.3
Denominator:
Weighted average shares outstanding	95.7			97.0
Adjustment for non-vested restricted common stock	(2.0		)	(2.5		)
Shares used in calculating basic earnings per share	93.7			94.5
Effect of dilutive stock options	1.9			1.5
Shares used in calculating diluted earnings per share	95.6			96.0
Net earnings per share:
Basic	$	0.49		$	0.17
Diluted	$	0.48		$	0.17

Goodwill and Indefinite-Lived Intangibles (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill and Indefinite-Lived Intangibles

The changes in the carrying amount of goodwill and indefinite-lived intangibles are as follows:



(In millions)	Goodwill			Indefinite-lived intangibles		Total
Balance at December 31, 2016	$	424.3		$	678.5	$	1,102.8
Foreign currency translation effects	0.8			—		0.8
Balance at April 1, 2017	$	425.1		$	678.5	$	1,103.6

Balance at December 30, 2017	$	429.8		$	604.5	$	1,034.3
Foreign currency translation effects	(0.5		)	—		(0.5		)
Balance at March 31, 2018	$	429.3		$	604.5	$	1,033.8

Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2018

Accounts Receivable [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

The following is a summary of the stated amount of accounts receivable that was sold as well as fees charged by the financial institution.



	Quarter Ended
(In millions)	March 31, 2018		April 1, 2017
Accounts receivable sold	$	112.6	$	149.6
Fees charged	0.5		0.5

Revenue From Contracts With Customers (Tables)

3 Months Ended

Mar. 31, 2018

Revenue From Contracts With Customers [Abstract]

Disaggregation Of Revenue [Table Text Block]

The wholesale channel includes royalty revenues given the similarity in the Company’s oversight and management, customer base, the performance obligation (footwear and apparel goods) and point in time completion of the performance obligation.



	Quarter Ended March 31, 2018						Quarter Ended April 1, 2017
(In millions)	Wholesale		Consumer-Direct		Total		Wholesale		Consumer-Direct		Total
Wolverine Outdoor & Lifestyle Group	$	201.8	$	21.0	$	222.8	$	208.5	$	22.9	$	231.4
Wolverine Boston Group	194.2		24.8		219.0		213.0		51.0		264.0
Wolverine Heritage Group	69.7		3.4		73.1		73.4		2.3		75.7
Other	17.8		1.4		19.2		14.7		5.5		20.2
Total	$	483.5	$	50.6	$	534.1	$	509.6	$	81.7	$	591.3

Contract With Customer Asset And Liability [Table Text Block]

The Company’s contract balances are as follows:



(In millions)	March 31, 2018		December 30, 2017
Contract balances:
Product returns reserve	$	13.3	$	12.6
Customer rebates liability	10.6		10.4
Customer markdowns reserve	6.3		6.4
Other sales incentives reserves	4.2		3.3
Customer advances liability	5.4		6.7

Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule of Borrowings

Total debt consists of the following obligations:



(In millions)	March 31, 2018			December 30, 2017			April 1, 2017
Term Loan A, due July 13, 2020	$	426.9		$	538.1		$	568.1
Senior Notes, 5.000% interest, due September 1, 2026	250.0			250.0			250.0
Borrowings under revolving credit agreements and other short-term notes	0.8			0.5			2.4
Capital lease obligation	0.4			0.5			0.5
Unamortized debt issuance costs	(5.8		)	(6.5		)	(7.9		)
Total debt	$	672.3		$	782.6		$	813.1

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.5-02.22)
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-Name Accounting Standards Codification
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-Paragraph 3
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

+ Details

Financial Instruments and Risk Management (Tables)

3 Months Ended

Mar. 31, 2018

Investments, All Other Investments [Abstract]

Schedule of Derivative Instruments [Table Text Block]

The notional amounts of the Company’s derivative instruments are as follows:



(Dollars in millions)	March 31, 2018		December 30, 2017		April 1, 2017
Foreign exchange contracts:
Hedge contracts	$	198.9	$	162.7	$	164.6
Non-hedge contracts	5.5		—		—
Interest rate swaps	442.0		446.9		494.6
Cross currency swap	106.4		106.4		106.4

Schedule of Derivative Assets at Fair Value [Table Text Block]



(In millions)	March 31, 2018			December 30, 2017			April 1, 2017
Financial assets:
Foreign exchange contracts - hedge	$	0.9		$	0.3		$	3.2
Interest rate swaps	2.3			—			0.3
Financial liabilities:
Foreign exchange contracts - hedge	$	(3.1	)	$	(5.0	)	$	(0.5	)
Interest rate swaps	—			(0.3		)	(3.7		)
Cross currency swap	(19.0		)	(13.8		)	(0.7		)

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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-Paragraph 5
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2018

Compensation and Retirement Disclosure [Abstract]

Summary of Net Pension and SERP Expense Recognized

The following is a summary of net pension and Supplemental Executive Retirement Plan (“SERP”) expense recognized by the Company.



	Quarter Ended
(In millions)	March 31, 2018			April 1, 2017
Service cost pertaining to benefits earned during the period	$	1.6		$	1.8
Interest cost on projected benefit obligations	4.1			4.4
Expected return on pension assets	(5.0		)	(4.9		)
Net amortization loss	0.8			2.4
Net pension expense	$	1.5		$	3.7

The non-service cost components of net pension expense is recorded in the Other expense (income), net line item on the consolidated condensed financial statements.

Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Changes in Accumulated Other Comprehensive Income (Loss)

The change in AOCI during the quarters ended March 31, 2018 and April 1, 2017 is as follows:



(In millions)	Foreign currency translation adjustments			Derivatives				Pension adjustments				Total
Balance of AOCI as of December 31, 2016	$	(53.5	)	$	2.8			$	(30.4	)		$	(81.1	)
Other comprehensive income (loss) before reclassifications ⁽¹⁾	2.7			(0.6		)		—				2.1
Amounts reclassified from AOCI	—			(0.7		)	⁽²⁾	2.4			⁽³⁾	1.7
Income tax expense (benefit)	—			—				(0.8		)		(0.8		)
Net reclassifications	—			(0.7		)		1.6				0.9
Net current-period other comprehensive income (loss) ⁽¹⁾	2.7			(1.3		)		1.6				3.0
Balance of AOCI as of April 1, 2017	$	(50.8	)	$	1.5			$	(28.8	)		$	(78.1	)

Balance of AOCI as of December 30, 2017	$	(32.7	)	$	(13.9	)		$	(28.6	)		$	(75.2	)
Other comprehensive income (loss) before reclassifications ⁽¹⁾	(0.2		)	(3.2		)		—				(3.4		)
Amounts reclassified from AOCI	—			2.7			⁽²⁾	0.8			⁽³⁾	3.5
Income tax expense (benefit)	—			(0.8		)		(0.1		)		(0.9		)
Net reclassifications	—			1.9				0.7				2.6
Net current-period other comprehensive income (loss) ⁽¹⁾	(0.2		)	(1.3		)		0.7				(0.8		)
Reclassifications to retained earnings ⁽⁴⁾	—			(2.1		)		(6.0		)		(8.1		)
Balance of AOCI as of March 31, 2018	$	(32.9	)	$	(17.3	)		$	(33.9	)		$	(84.1	)


⁽¹⁾	Other comprehensive income (loss) is reported net of taxes and noncontrolling interest.


⁽²⁾	Amounts related to foreign currency derivatives are included in cost of goods sold. Amounts related to interest rate swaps and the cross currency swap are included in interest expense.


⁽³⁾	Amounts reclassified are included in the computation of net pension expense.

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]



	Fair Value Measurements
	Quoted Prices With Other Observable Inputs (Level 2)
(In millions)	March 31, 2018			December 30, 2017			April 1, 2017
Financial assets:
Derivatives	$	3.2		$	0.3		$	3.5
Financial liabilities:
Derivatives	$	(22.1	)	$	(19.1	)	$	(4.9	)

Fair Value, by Balance Sheet Grouping [Table Text Block]

The carrying amount of these financial instruments is historical cost, which approximates fair value, except for the debt. The carrying value and the fair value of the Company’s debt, excluding capital leases, are as follows:



(In millions)	March 31, 2018		December 30, 2017		April 1, 2017
Carrying value	$	671.9	$	782.1	$	812.6
Fair value	681.4		802.5		816.6

Litigation and Contingencies (Tables)

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Minimum Royalty and Advertising Obligations Due Under Terms of Certain Licenses Held by Company

Minimum future royalty and advertising obligations for the fiscal periods subsequent to March 31, 2018 under the terms of certain licenses held by the Company are as follows:



(In millions)	2018		2019		2020		2021		2022		Thereafter
Minimum royalties	$	0.9	$	1.5	$	1.5	$	—	$	—	$	—
Minimum advertising	2.2		3.1		3.2		3.3		3.4		7.0

Business Segments (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Revenue and Operating Profit by Segment

The following is a summary of certain key financial measures for the respective fiscal periods indicated.



	Quarter Ended
(In millions)	March 31, 2018			April 1, 2017
Revenue:
Wolverine Outdoor & Lifestyle Group	$	222.8		$	231.4
Wolverine Boston Group	219.0			264.0
Wolverine Heritage Group	73.1			75.7
Other	19.2			20.2
Total	$	534.1		$	591.3
Operating profit (loss):
Wolverine Outdoor & Lifestyle Group	$	52.7		$	51.6
Wolverine Boston Group	36.8			33.8
Wolverine Heritage Group	12.6			9.6
Other	0.9			0.3
Corporate	(41.5		)	(60.8		)
Total	$	61.5		$	34.5

Assets and Goodwill by Segment



(In millions)	March 31, 2018		December 30, 2017		April 1, 2017
Total assets:
Wolverine Outdoor & Lifestyle Group	$	462.0	$	420.4	$	443.5
Wolverine Boston Group	1,235.8		1,245.0		1,375.8
Wolverine Heritage Group	129.0		136.7		147.4
Other	42.5		42.1		50.3
Corporate	334.7		554.8		370.8
Total	$	2,204.0	$	2,399.0	$	2,387.8
Goodwill:
Wolverine Outdoor & Lifestyle Group	$	129.6	$	128.8	$	127.0
Wolverine Boston Group	283.2		284.5		281.6
Wolverine Heritage Group	16.5		16.5		16.5
Total	$	429.3	$	429.8	$	425.1

Restructuring Activities (Tables)

3 Months Ended

Mar. 31, 2018

2017 Plan [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring Costs

The following is a summary of the activity during the quarter ended March 31, 2018, with respect to a reserve established by the Company in connection with the 2017 Plan, by category of costs.



(In millions)	Severance and employee related			Total
Balance at December 30, 2017	$	3.3		$	3.3
Amounts paid	(1.3		)	(1.3		)
Balance at March 31, 2018	$	2.0		$	2.0

2016 Plan [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring Costs



(In millions)	Severance and employee related			Impairment of property and equipment			Costs associated with exit or disposal activities			Total
Balance at December 31, 2016	$	0.8		$	—		$	1.2		$	2.0
Restructuring costs	1.5			4.5			17.9			23.9
Amounts paid	(0.6		)	—			(9.3		)	(9.9		)
Charges against assets	—			(4.5		)	(4.6		)	(9.1		)
Balance at April 1, 2017	$	1.7		$	—		$	5.2		$	6.9

Balance at December 30, 2017	$	0.3		$	—		$	1.4		$	1.7
Amounts paid	(0.3		)	—			(1.0		)	(1.3		)
Balance at March 31, 2018	$	—		$	—		$	0.4		$	0.4

Consumer Direct Operations [Member]

Restructuring Cost and Reserve [Line Items]

Schedule of Restructuring Costs



(In millions)	Costs associated with exit or disposal activities			Total
Balance at December 31, 2016	$	1.7		$	1.7
Amounts paid	(0.1		)	(0.1		)
Balance at April 1, 2017	$	1.6		$	1.6

New Accounting Standards Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Accounting Standards Update 2018-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement, Effect of Adoption	$ 7.9
Accounting Standards Update 2017-07 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement, Effect of Adoption		$ 1.9
Accounting Standards Update 2017-12 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement, Effect of Adoption	$ 0.2

Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Numerator:
Net earnings attributable to Wolverine World Wide, Inc.	$ 46.7	$ 16.7
Adjustment for earnings allocated to non-vested restricted common stock	(0.9)	(0.4)
Net earnings used in calculating basic and diluted earnings per share	$ 45.8	$ 16.3
Denominator:
Weighted average shares outstanding	95.7	97.0
Adjustment for non-vested restricted common stock	(2.0)	(2.5)
Shares used in calculating basic earnings per share	93.7	94.5
Effect of dilutive stock options	1.9	1.5
Shares used in calculating diluted earnings per share	95.6	96.0
Net earnings per share:
Basic	$ 0.49	$ 0.17
Diluted	$ 0.48	$ 0.17

Earnings Per Share (Additional Information) (Details) - shares	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Earnings Per Share [Abstract]
Anti-dilutive stock options	101,321	1,872,281

Goodwill and Indefinite-Lived Intangibles (Changes in the Carrying Amount of Goodwill and Indefinite-Lived Intangibles) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Goodwill [Roll Forward]
Goodwill, Beginning balance	$ 429.8	$ 424.3
Foreign currency translation effects	(0.5)	0.8
Goodwill, Ending balance	429.3	425.1
Indefinite-lived Intangible Assets [Roll Forward]
Indefinite-lived Intangibles, Beginning balance	604.5	678.5
Indefinite-lived Intangibles, Ending balance	604.5	678.5
Goodwill and Indefinite-lived Intangible Assets [Roll Forward]
Goodwill and Indefinite-lived Intangibles, Beginning balance	1,034.3	1,102.8
Goodwill and Indefinite-lived Intangibles, Foreign currency translation effects	(0.5)	0.8
Goodwill and Indefinite-lived Intangibles, Ending balance	$ 1,033.8	$ 1,103.6

Goodwill and Indefinite-Lived Intangibles Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2017	Mar. 31, 2018	Apr. 01, 2017	Dec. 31, 2016
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangibles	$ 604.5	$ 604.5	$ 678.5	$ 678.5
Sperry [Member]
Indefinite-lived Intangible Assets [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 68.6
Indefinite-lived intangibles		$ 518.2

Accounts Receivable (Details) - USD ($) $ in Millions	3 Months Ended
Accounts Receivable (Details) - USD ($) $ in Millions	Mar. 31, 2018	Apr. 01, 2017	Dec. 30, 2017
Accounts Receivables [Abstract]
Sale of accounts receivable, maximum amount under agreement	$ 150.0
Sale of accounts receivable percent paid at sale	90.00%
Accounts receivable sold	$ 112.6	$ 149.6
Fee charged on sale of accounts receivable	0.5	0.5
Accounts receivable, reduction due to sale	$ 71.0	$ 89.6	$ 70.1

Revenue From Contracts With Customers Disaggrated Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Revenue	$ 534.1	$ 591.3
Wolverine Outdoor and Lifestyle Group [Member]
Revenue	222.8	231.4
Wolverine Boston Group [Member]
Revenue	219.0	264.0
Wolverine Heritage Group [Member]
Revenue	73.1	75.7
Other [Member]
Revenue	19.2	20.2
Wholesale Channel [Member]
Revenue	483.5	509.6
Wholesale Channel [Member] \| Wolverine Outdoor and Lifestyle Group [Member]
Revenue	201.8	208.5
Wholesale Channel [Member] \| Wolverine Boston Group [Member]
Revenue	194.2	213.0
Wholesale Channel [Member] \| Wolverine Heritage Group [Member]
Revenue	69.7	73.4
Wholesale Channel [Member] \| Other [Member]
Revenue	17.8	14.7
Consumer-Direct Channel [Member]
Revenue	50.6	81.7
Consumer-Direct Channel [Member] \| Wolverine Outdoor and Lifestyle Group [Member]
Revenue	21.0	22.9
Consumer-Direct Channel [Member] \| Wolverine Boston Group [Member]
Revenue	24.8	51.0
Consumer-Direct Channel [Member] \| Wolverine Heritage Group [Member]
Revenue	3.4	2.3
Consumer-Direct Channel [Member] \| Other [Member]
Revenue	$ 1.4	$ 5.5

Revenue From Contracts With Customers Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Revenue Recognition [Abstract]
Remaining Fixed Transaction Price	$ 52.2
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Year	2024

Revenue From Contracts With Customers Contract Balances (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017
Revenue Recognition [Abstract]
Product Returns Reserve	$ 13.3	$ 12.6
Customer Rebates Liability	10.6	10.4
Customer Markdowns Reserve	6.3	6.4
Sales Incentives Reserve	4.2	3.3
Customer Advances, Current	$ 5.4	$ 6.7

Debt (Schedule of Borrowings) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017
Debt Instrument [Line Items]
Borrowings under revolving credit agreements and other short-term notes	$ 0.8	$ 0.5	$ 2.4
Capital lease obligations	0.4	0.5	0.5
Unamortized debt issuance costs	(5.8)	(6.5)	(7.9)
Total debt	672.3	782.6	813.1
Term Loan A [Member] \| July Thirteenth Two Thousand Twenty [Member]
Debt Instrument [Line Items]
Long-term debt	426.9	538.1	568.1
Senior Notes [Member] \| September First Two Thousand Twenty Six [Member]
Debt Instrument [Line Items]
Long-term debt	$ 250.0	$ 250.0	$ 250.0

Debt (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Dec. 30, 2017
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 41.2	$ 41.2	$ 37.5
Borrowings under revolving credit agreements and other short-term notes	0.8	2.4	0.5
Amortization of deferred financing costs	1.0	0.7
Maximum [Member]
Debt Instrument [Line Items]
Aggregate principal amount debt instrument	$ 1,750.0
Alternative Base Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Alternative Base Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.25%
Euro Currency Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%
Euro Currency Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Aggregate principal amount debt instrument	$ 600.0
Outstanding letters of credit	2.5	2.5	2.5
Foreign Currency Subfacility [Member]
Debt Instrument [Line Items]
Revolving credit facility amount	200.0
Swingline Subfacility [Member]
Debt Instrument [Line Items]
Revolving credit facility amount	50.0
Letter of Credit Subfacility [Member]
Debt Instrument [Line Items]
Revolving credit facility amount	50.0
Foreign Line of Credit [Member]
Debt Instrument [Line Items]
Revolving credit facility amount	4.0
Borrowings under revolving credit agreements and other short-term notes	0.8	$ 1.9	$ 0.5
July Thirteenth Two Thousand Twenty [Member] \| Term Loan A [Member]
Debt Instrument [Line Items]
Aggregate principal amount debt instrument	$ 588.8
Weighted average interest rate	3.47%
September First Two Thousand Twenty Six [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount debt instrument	$ 250.0
Interest rate	5.00%

Financial Instruments and Risk Management (Derivative Notional Amounts) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017
Foreign exchange contracts [Member] \| Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 198.9	$ 162.7	$ 164.6
Foreign exchange contracts [Member] \| Non-hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	5.5	0.0	0.0
Interest rate swaps [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	442.0	446.9	494.6
Cross currency swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 106.4	$ 106.4	$ 106.4

Financial Instruments and Risk Management Derivative Recorded Values (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017
Derivatives, Fair Value [Line Items]
Interest rate swap, assets	$ 2.3	$ 0.0	$ 0.3
Interest rate swap, liabilities	0.0	(0.3)	(3.7)
Cross currency swap, liabilities	(19.0)	(13.8)	(0.7)
Hedge [Member]
Derivatives, Fair Value [Line Items]
Foreign exchange contracts, asset	0.9	0.3	3.2
Foreign exchange contracts liabilities	$ (3.1)	$ (5.0)	$ (0.5)

Financial Instruments and Risk Management (Additional Information) (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Dec. 30, 2017
Foreign exchange contracts [Member]
Financial Instruments And Derivatives [Line Items]
Maximum remaining maturity of foreign currency derivatives	545 days	362 days	356 days
Cross currency swap [Member]
Financial Instruments And Derivatives [Line Items]
Derivative, Fixed Interest Rate	2.75%
Derivative, Forward Interest Rate	5.00%
July Thirteenth Two Thousand Twenty [Member] \| Interest rate swaps [Member]
Financial Instruments And Derivatives [Line Items]
Financial instrument expiration date	Jul. 13, 2020
September First Two Thousand Twenty One [Member] \| Cross currency swap [Member]
Financial Instruments And Derivatives [Line Items]
Financial instrument expiration date	Sep. 01, 2021

Stock-Based Compensation (Additional Information) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 7.9	$ 7.7
Related income tax benefits on share based compensation	$ 1.6	$ 2.6
Restricted Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards Issued	502,775	730,081
Awards Issued, Weighted Average Grant Date Fair Value	$ 31.87	$ 22.92
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards Issued	335,315	488,918
Awards Issued, Weighted Average Grant Date Fair Value	$ 31.85	$ 25.02

Retirement Plans (Summary of Net Pension and Supplemental Executive Retirement Plan Expense Recognized) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Compensation and Retirement Disclosure [Abstract]
Service cost pertaining to benefits earned during the period	$ 1.6	$ 1.8
Interest cost on projected benefit obligations	4.1	4.4
Expected return on pension assets	(5.0)	(4.9)
Net amortization loss	0.8	2.4
Net pension expense	$ 1.5	$ 3.7

Income Taxes (Additional Information) (Details)	3 Months Ended
Income Taxes (Additional Information) (Details)	Mar. 31, 2018	Apr. 01, 2017
Income Tax Disclosure [Abstract]
Federal Statutory Income Tax Rate	21.00%
Effective Income Tax Rate, Percent	15.10%	20.70%

Accumulated Other Comprehensive Income (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions

3 Months Ended

Mar. 31, 2018

Apr. 01, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]

Beginning balance AOCI

$ (75.2)

$ (81.1)

Other comprehensive income (loss) before reclassifications

^[1]

(3.4)

2.1

Amounts reclassified from AOCI

3.5

1.7

Income tax expense (benefit)

(0.9)

(0.8)

Net reclassifications

2.6

0.9

Other comprehensive income (loss)

^[1]

(0.8)

3.0

Reclassifications to retained earnings

^[2]

(8.1)

Ending balance AOCI

(84.1)

(78.1)

Foreign currency translation adjustments [Member]

Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]

Beginning balance AOCI

(32.7)

(53.5)

Other comprehensive income (loss) before reclassifications

^[1]

(0.2)

2.7

Amounts reclassified from AOCI

0.0

Income tax expense (benefit)

0.0

Net reclassifications

0.0

Other comprehensive income (loss)

^[1]

(0.2)

2.7

Reclassifications to retained earnings

^[2]

0.0

Ending balance AOCI

(32.9)

(50.8)

Derivatives [Member]

Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]

Beginning balance AOCI

(13.9)

2.8

Other comprehensive income (loss) before reclassifications

^[1]

(3.2)

(0.6)

Amounts reclassified from AOCI

^[3]

2.7

(0.7)

Income tax expense (benefit)

(0.8)

0.0

Net reclassifications

1.9

(0.7)

Other comprehensive income (loss)

^[1]

(1.3)

Reclassifications to retained earnings

^[2]

(2.1)

Ending balance AOCI

(17.3)

1.5

Pension adjustments [Member]

Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]

Beginning balance AOCI

(28.6)

(30.4)

Other comprehensive income (loss) before reclassifications

^[1]

0.0

Amounts reclassified from AOCI

^[4]

0.8

2.4

Income tax expense (benefit)

(0.1)

(0.8)

Net reclassifications

0.7

1.6

Other comprehensive income (loss)

^[1]

0.7

1.6

Reclassifications to retained earnings

^[2]

(6.0)

Ending balance AOCI

$ (33.9)

$ (28.8)

[1]	Other comprehensive income (loss) is reported net of taxes and noncontrolling interest.
[2]	Amounts reclassified to retained earnings upon adoption of ASU 2017-12 and ASU 2018-02.
[3]	Amounts related to foreign currency derivatives are included in cost of goods sold. Amounts related to interest rate swaps and the cross currency swap are included in interest expense.
[4]	Amounts reclassified are included in the computation of net pension expense.

Fair Value Measurements Recurring Fair Value Measurements (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	$ 3.2	$ 0.3	$ 3.5
Derivative Liability	$ (22.1)	$ (19.1)	$ (4.9)

Fair Value Measurements Fair Value Disclosures (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017
Fair Value Disclosures [Abstract]
Debt, Carrying Value	$ 671.9	$ 782.1	$ 812.6
Debt, Fair Value	$ 681.4	$ 802.5	$ 816.6

Litigation and Contingencies Environmental Remediation (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 30, 2017
Environmental Remediation Obligations [Abstract]
Environmental remediation costs	$ 0.9	$ 31.1
Environmental remediation accrual	29.2
Environmental remediation accrual, current	12.7
Environmental remediation accrual, noncurrent	$ 16.5

Litigation and Contingencies (Minimum Royalty and Advertising Obligations Due Under Terms of Certain Licenses Held by Company) (Details) $ in Millions	Mar. 31, 2018 USD ($)
Royalties [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2018	$ 0.9
2019	1.5
2020	1.5
2021	0.0
2022	0.0
Thereafter	0.0
Advertising [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2018	2.2
2019	3.1
2020	3.2
2021	3.3
2022	3.4
Thereafter	$ 7.0

Litigation and Contingencies (Additional Information) (Details) - Licensing agreements [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Long-term Purchase Commitment [Line Items]
Royalty expense, licensing agreements	$ 0.5	$ 0.6
Advertising expense, licensing agreements	$ 0.8	$ 0.9

Business Segments (Additional Information) (Details)	3 Months Ended
Business Segments (Additional Information) (Details)	Mar. 31, 2018 Segment
Segment Reporting [Abstract]
Number of operating segments	3

Business Segments (Revenue and Operating Profit by Segment) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Segment Reporting Information [Line Items]
Revenue	$ 534.1	$ 591.3
Operating profit (loss)	61.5	34.5
Wolverine Outdoor and Lifestyle Group [Member]
Segment Reporting Information [Line Items]
Revenue	222.8	231.4
Operating profit (loss)	52.7	51.6
Wolverine Boston Group [Member]
Segment Reporting Information [Line Items]
Revenue	219.0	264.0
Operating profit (loss)	36.8	33.8
Wolverine Heritage Group [Member]
Segment Reporting Information [Line Items]
Revenue	73.1	75.7
Operating profit (loss)	12.6	9.6
Other [Member]
Segment Reporting Information [Line Items]
Revenue	19.2	20.2
Operating profit (loss)	0.9	0.3
Corporate [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	$ (41.5)	$ (60.8)

Business Segments (Assets and Goodwill by Segment) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total assets	$ 2,204.0	$ 2,399.0	$ 2,387.8
Goodwill	429.3	429.8	425.1	$ 424.3
Wolverine Outdoor and Lifestyle Group [Member]
Segment Reporting Information [Line Items]
Total assets	462.0	420.4	443.5
Goodwill	129.6	128.8	127.0
Wolverine Boston Group [Member]
Segment Reporting Information [Line Items]
Total assets	1,235.8	1,245.0	1,375.8
Goodwill	283.2	284.5	281.6
Wolverine Heritage Group [Member]
Segment Reporting Information [Line Items]
Total assets	129.0	136.7	147.4
Goodwill	16.5	16.5	16.5
Other [Member]
Segment Reporting Information [Line Items]
Total assets	42.5	42.1	50.3
Corporate [Member]
Segment Reporting Information [Line Items]
Total assets	$ 334.7	$ 554.8	$ 370.8

Restructuring Activities (Restructuring Rollforward) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Restructuring Reserve [Roll Forward]
Restructuring costs	$ 0.0	$ 4.6
Restructuring and impairment costs	0.0	20.0
Amounts paid	(3.1)	(11.7)
2017 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	3.3
Amounts paid	(1.3)
Restructuring reserve, ending balance	2.0
2017 Plan [Member] \| Severance and employee related [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	3.3
Amounts paid	(1.3)
Restructuring reserve, ending balance	2.0
2016 Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	1.7	2.0
Restructuring and impairment costs		23.9
Amounts paid	(1.3)	(9.9)
Charges against assets		(9.1)
Restructuring reserve, ending balance	0.4	6.9
2016 Plan [Member] \| Severance and employee related [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0.3	0.8
Restructuring and impairment costs		1.5
Amounts paid	(0.3)	(0.6)
Restructuring reserve, ending balance	0.0	1.7
2016 Plan [Member] \| Impairment of property and equipment [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0.0	0.0
Restructuring and impairment costs		4.5
Charges against assets		(4.5)
Restructuring reserve, ending balance	0.0	0.0
2016 Plan [Member] \| Exit or disposal activities [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	1.4	1.2
Restructuring and impairment costs		17.9
Amounts paid	(1.0)	(9.3)
Charges against assets		(4.6)
Restructuring reserve, ending balance	$ 0.4	5.2
Consumer Direct Operations [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance		1.7
Amounts paid		(0.1)
Restructuring reserve, ending balance		1.6
Consumer Direct Operations [Member] \| Exit or disposal activities [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance		1.7
Amounts paid		(0.1)
Restructuring reserve, ending balance		$ 1.6

Restructuring Activities (Additional Information) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)	Apr. 01, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	$ 0.0	$ 20.0
2017 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring costs incurred	11.3
Estimated annualized pretax benefit	11.0
2017 Plan [Member] \| Cost of goods sold [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring costs incurred	1.5
2017 Plan [Member] \| Selling, general and administrative expenses [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring costs incurred	9.8
2016 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring costs incurred	$ 75.1
Number of retail stores closed	266
Estimated annualized pretax benefit	$ 20.0
Restructuring and impairment costs		23.9
2016 Plan [Member] \| Cost of goods sold [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring costs incurred	10.2
2016 Plan [Member] \| Selling, general and administrative expenses [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring costs incurred	64.9
Consumer Direct Operations [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring costs incurred	$ 48.8
Number of retail stores closed	136
Consumer Direct Operations [Member] \| Cost of goods sold [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring costs incurred	$ 6.5
Consumer Direct Operations [Member] \| Selling, general and administrative expenses [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring costs incurred	$ 42.3
Organizational Changes [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs		0.7
Impairment of property and equipment [Member] \| 2016 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs		$ 4.5