Wolverine World Wide (WWW) 10-K 26 Feb 21 2020 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Jan. 02, 2021	Feb. 12, 2021	Jun. 26, 2020
Cover [Abstract]
Document Type	10-K
Current Fiscal Year End Date	--01-02
Document Annual Report	true
Document Period End Date	Jan. 2, 2021
Document Transition Report	false
Entity File Number	001-06024
Entity Registrant Name	WOLVERINE WORLD WIDE, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-1185150
Entity Address, Address Line One	9341 Courtland Drive N.E.
Entity Address, City or Town	Rockford
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	49351
City Area Code	(616)
Local Phone Number	866-5500
Title of 12(b) Security	Common Stock, $1 Par Value
Trading Symbol	WWW
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1,700,312,291
Entity Common Stock, Shares Outstanding		82,479,134
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Central Index Key	0000110471
Amendment Flag	false

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Income Statement [Abstract]
Revenue	$ 1,791.1	$ 2,273.7	$ 2,239.2
Cost of goods sold	1,055.5	1,349.9	1,317.9
Gross profit	735.6	923.8	921.3
Selling, general and administrative expenses	639.4	669.3	654.1
Impairment of intangible assets	222.2	0	0
Environmental and other related costs, net of recoveries	11.1	83.5	15.3
Operating profit (loss)	(137.1)	171	251.9
Other expenses:
Interest expense, net	43.6	30	24.5
Debt extinguishment, interest rate swap termination, and other costs	5.5	0	0.6
Other income, net	(2.1)	(4.9)	(0.6)
Total other expenses	47	25.1	24.5
Earnings (loss) before income taxes	(184.1)	145.9	227.4
Income tax expense (benefit)	(45.5)	17	27.1
Net earnings (loss)	(138.6)	128.9	200.3
Less: net earnings (loss) attributable to noncontrolling interests	(1.7)	0.4	0.2
Net earnings (loss) attributable to Wolverine World Wide, Inc.	$ (136.9)	$ 128.5	$ 200.1
Net earnings per share :
Earnings per share - Basic	$ (1.70)	$ 1.48	$ 2.07
Earnings per share - Diluted	$ (1.70)	$ 1.44	$ 2.05

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021		Dec. 28, 2019		Dec. 29, 2018
Net earnings (loss)	$ (138.6)		$ 128.9		$ 200.3
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	10.6		5.4		(20.5)
Unrealized gain (loss) arising during the period, net of taxes of $(5.2), $0.2 and $1.3	(17.6)		0.9		14.4
Reclassification adjustments included in net earnings (loss), net of taxes of $0.4, $(2.2) and $1.3	3.1		(7.6)		2.5
Net actuarial loss arising during the period, net of taxes of $(8.0), $(3.9) and $(2.6)	(30)		(14.6)		(9.9)
Amortization of prior actuarial losses, net of taxes of $1.4, $0.5 and $0.7	5.2		2.1		2.6
Settlement loss, net of taxes of $1.5 in 2018	0		0		5.7
Other comprehensive loss	(28.7)		(13.8)		(5.2)
Less: other comprehensive income (loss) attributable to noncontrolling interests	(0.2)		0		(0.2)
Other comprehensive income (loss)	(28.5)	[1]	(13.8)	[1]	(5)
Comprehensive income (loss)	(167.3)		115.1		195.1
Less: comprehensive income (loss) attributable to noncontrolling interests	(1.9)		0.4		0
Comprehensive income (loss) attributable to Wolverine World Wide, Inc.	$ (165.4)		$ 114.7		$ 195.1
[1]	Other comprehensive income (loss) is reported net of taxes and noncontrolling interest.

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Statement of Comprehensive Income [Abstract]
Unrealized loss on derivatives, tax amount	$ 5.2	$ (0.2)	$ (1.3)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax	0.4	(2.2)	1.3
Actuarial loss arising during the period, tax amount	8	3.9	2.6
Amortization of prior actuarial losses, tax amount	1.4	0.5	0.7
Settlement gain included in net income, tax amount	$ 0	$ 0	$ 1.5

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Current assets:
Cash and cash equivalents	$ 347.4	$ 180.6
Accounts receivable, less allowances of $33.5 and $26.7	268.3	331.2
Inventories:
Finished products, net	237.9	342
Raw materials and work-in-process, net	5.2	6.2
Total inventories	243.1	348.2
Prepaid expenses and other current assets	45.4	107.1
Total current assets	904.2	967.1
Property, plant and equipment:
Gross cost	321.8	325
Accumulated depreciation	(197.2)	(184)
Property, plant and equipment, net	124.6	141
Lease right-of-use assets	142.5	160.8
Other assets:
Goodwill	442.4	438.9
Indefinite-lived intangibles	382.3	604.5
Amortizable intangibles, net	73	77.8
Deferred Income Tax Assets, Net	3.2	2.9
Other	65.2	87
Total other assets	966.1	1,211.1
Total assets	2,137.4	2,480
Current liabilities:
Accounts payable	185	202.1
Accrued salaries and wages	27	20.8
Other accrued liabilities	150	157.9
Lease liabilities	34	34.1
Current maturities of long-term debt	10	12.5
Borrowings under revolving credit agreements	0	360
Total current liabilities	406	787.4
Long-term debt, less current maturities	712.5	425.9
Accrued pension liabilities	147	109.7
Deferred income taxes	35.5	99
Lease liabilities, noncurrent	130.3	147.2
Other liabilities	133.1	132.4
Wolverine World Wide, Inc. stockholders’ equity:
Common stock – par value $1, authorized 320,000,000 shares; 110,426,769, and 108,329,250 shares issued	110.4	108.3
Additional paid-in capital	252.6	233.4
Retained earnings	1,093.3	1,263.3
Accumulated other comprehensive loss	(130.6)	(102.1)
Cost of shares in treasury; 28,285,274, and 27,181,512 shares	(764.3)	(736.2)
Total Wolverine World Wide, Inc. stockholders’ equity	561.4	766.7
Noncontrolling interest	11.6	11.7
Total stockholders’ equity	573	778.4
Total liabilities and stockholders’ equity	$ 2,137.4	$ 2,480

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Statement of Financial Position [Abstract]
Allowances, accounts receivable	$ 33.5	$ 26.7
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	320,000,000	320,000,000
Common stock, shares issued, including treasury shares	110,426,769	108,329,250
Treasury stock, shares	28,285,274	27,181,512

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
OPERATING ACTIVITIES
Net earnings (loss)	$ (138.6)	$ 128.9	$ 200.3
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Depreciation and amortization	32.8	32.7	31.5
Deferred income taxes	(56.9)	(9)	22.1
Stock-based compensation expense	28.9	24.5	31.2
Pension contribution	0	0	(60.7)
Pension and SERP expense	8.5	5.6	11.8
Debt Related Commitment Fees and Debt Issuance Costs	5.5	0	0.6
Impairment of intangible assets	222.2	0	0
Environmental and other related costs, net of cash payments and recoveries received	31.5	48.8	(6.1)
Other	(12.7)	(11.6)	4.7
Changes in operating assets and liabilities:
Accounts receivable	64.8	30.7	(95)
Inventories	107.2	(23.8)	(44.5)
Other operating assets	7.4	(5.4)	(17.8)
Accounts payable	(18.9)	0	40.6
Income taxes	(0.5)	3.6	(1.9)
Other operating liabilities	27.9	(2.4)	(19.3)
Net cash provided by operating activities	309.1	222.6	97.5
INVESTING ACTIVITIES
Business acquisition, net of cash acquired	(5.5)	(15.1)	0
Additions to property, plant and equipment	(10.3)	(34.4)	(21.7)
Proceeds from Sales of Assets, Investing Activities	0.2	0	2.2
Investment in joint ventures	(3.5)	(8.5)	0
Proceeds from Life Insurance Policy	26.8	0	0
Other	(1.6)	(3.5)	(2.7)
Net cash provided by (used in) investing activities	6.1	(61.5)	(22.2)
FINANCING ACTIVITIES
Repayments of Lines of Credit	898	469.3	27.7
Proceeds from Lines of Credit	538	704.3	152.2
Proceeds from Issuance of Debt	471	0	200
Payments on long-term debt	(183.5)	(7.5)	(538.2)
Payments of debt issuance and debt extinguishment costs	(6.4)	(0.3)	(2.7)
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	7.3	0	0
Cash dividends paid	(33.6)	(33.6)	(28.6)
Purchase of common stock for treasury	(21)	(319.2)	(174.7)
Payments Related to Tax Withholding for Share-based Compensation	24.8	16.9	8.8
Proceeds from the exercise of stock options	9.8	12.2	24
Contributions from noncontrolling interests	1.8	5.7	0
Net cash used in financing activities	(154)	(124.6)	(404.5)
Effect of foreign exchange rate changes	5.6	1	(8.7)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	166.8	37.5	(337.9)
Cash and cash equivalents at beginning of the year	180.6	143.1	481
Cash and cash equivalents at end of the year	347.4	180.6	143.1
OTHER CASH FLOW INFORMATION
Interest paid	41.4	32.4	29
Net income taxes paid	8.6	23.2	17.4
Noncash Investing and Financing Items [Abstract]
Additions to property, plant and equipment not yet paid	0.9	0.8	1.3
Business acquisition not yet paid	$ 0	$ 5.5	$ 0

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total		Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 30, 2017	$ 955.2		$ 106.4	$ 149.2	$ 992.2	$ (75.2)	$ (223)	$ 5.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Wolverine World Wide, Inc.	200.1				200.1
Net earnings attributable to noncontrolling interests	0.2							0.2
Net earnings (loss)	200.3
Other comprehensive income (loss)	(5)					(5)
Other comprehensive income (loss) attributable to noncontrolling interest	(0.2)
Other comprehensive income (loss)	(5.2)
Shares issued under stock incentive plans net of forfeitures	1.9		0.2	1.7
Stock issued for stock options exercised, net	24		1.4	22.6
Stock-based compensation expense	31.2			31.2
Cash dividends declared	(30.7)				(30.7)
Issuance of treasury shares	0.3			(0.1)			0.2
Purchase of common stock for treasury	(174.7)						(174.7)
Purchases of shares under employee stock plans	(6.9)						(6.9)
AdoptionImpactASU201602					8.1	(8.1)
Ending Balance at Dec. 29, 2018	991.6		107.6	201.4	1,169.7	(88.3)	(404.4)	5.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Wolverine World Wide, Inc.	128.5				128.5
Net earnings attributable to noncontrolling interests	0.4							0.4
Net earnings (loss)	128.9
Other comprehensive income (loss)	(13.8)	[1]				(13.8)
Other comprehensive income (loss) attributable to noncontrolling interest	0
Other comprehensive income (loss)	(13.8)
Shares issued under stock incentive plans net of forfeitures	4.1		(0.1)	4.2
Stock issued for stock options exercised, net	12.2		0.6	11.6
Stock-based compensation expense	24.5			24.5
Cash dividends declared	(34.9)				(34.9)
Issuance of treasury shares	0.3			(0.1)			0.2
Purchase of common stock for treasury	(319.2)						(319.2)
Purchases of shares under employee stock plans	(12.8)						(12.8)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	5.7							5.7
Ending Balance at Dec. 28, 2019	778.4		108.3	233.4	1,263.3	(102.1)	(736.2)	11.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings attributable to Wolverine World Wide, Inc.	(136.9)				(136.9)
Net earnings attributable to noncontrolling interests	(1.7)							(1.7)
Net earnings (loss)	(138.6)
Other comprehensive income (loss)	(28.5)	[1]				(28.5)
Other comprehensive income (loss) attributable to noncontrolling interest	(0.2)
Other comprehensive income (loss)	(28.7)
Shares issued under stock incentive plans net of forfeitures	(17.5)		(1.5)	19
Stock issued for stock options exercised, net	9.9		0.6	9.3
Stock-based compensation expense	28.9			28.9
Cash dividends declared	(33.1)				(33.1)
Issuance of treasury shares	0.2			0			0.2
Purchase of common stock for treasury	(21)						(21)
Purchases of shares under employee stock plans	(7.3)						(7.3)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	1.8							1.8
Ending Balance at Jan. 02, 2021	$ 573		$ 110.4	$ 252.6	$ 1,093.3	$ (130.6)	$ (764.3)	$ 11.6
[1]	Other comprehensive income (loss) is reported net of taxes and noncontrolling interest.

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Shares issued under stock incentive plans, net of forfeitures	1,497,478	38,655	(154,084)
Shares issued for stock options exercised, net	600,041	681,389	1,357,841
Cash dividends declared per share	$ 0.40	$ 0.40	$ 0.32
Issuance of treasury shares	5,479	7,460	7,761
Purchases of shares under employee stock plans	877,624	10,914,965	5,349,262
Shares Paid for Tax Withholding for Share Based Compensation	231,617	368,326	219,039

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Jan. 02, 2021
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; kids’ 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 ® . The Company’s products are marketed worldwide through owned operations, through licensing and distribution arrangements with third parties, and through joint ventures. The Company also operates retail stores and eCommerce sites to market both its own brands and branded footwear and apparel from other manufacturers, and has a leathers division that markets Wolverine Performance Leathers™ . Principles of Consolidation and Basis of Presentation The consolidated financial statements include the accounts of Wolverine World Wide, Inc. and its majority-owned subsidiaries (collectively, the “Company”). All intercompany accounts and transactions have been eliminated in consolidation. The COVID-19 pandemic, the duration and severity of which is subject to uncertainty, has had and continues to have, a significant impact on the Company's business. Management's estimates and assumptions used in the preparation of the Company’s consolidated financial statements in accordance with U.S. GAAP take into account both current and expected potential future impacts of the COVID-19 pandemic on the Company’s business based on available information. Actual results may differ materially from management’s estimates. Fiscal Year The Company’s fiscal year is the 52- or 53-week period that ends on the Saturday nearest to December 31. Fiscal year 2020 had 53 weeks, and fiscal years 2019 and 2018 each had 52 weeks. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Revenue Recognition The Company recognizes revenue in accordance with FASB ASC Topic 606, Revenue from Contracts with Customers . 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. Control of the Company's goods and services, and associated 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 shipment or delivery of branded products 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 shipment of goods, or point of purchase for retail store sales, 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 having the risks and rewards of the goods. Revenue is recognized net of any taxes collected from customers, which are subsequently remitted to governmental authorities. Shipping and handling costs that are charged to and reimbursed by a customer are recognized as revenue, while the related expenses incurred by the Company are recorded as cost of goods sold. The Company has elected the practical expedient to treat shipping and handling activities that occur after control of the goods transfers to the customer as fulfillment activities. Payment terms for the Company's revenue vary by sales channel. Standard credit terms apply to the Company's wholesale receivables, while payment is rendered at the time of sale within the consumer-direct channel. The timing of revenue recognition, billings and cash collections results in billed accounts receivable (contract assets), and customer advances (contract liabilities) on the consolidated balance sheets. Generally, billing occurs commensurate to revenue recognition resulting in contract assets. See Note 6 for additional information. 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. Advertising Costs Advertising costs are expensed as incurred, except for certain materials that are expensed the first time that the advertising takes place. Advertising expenses were $135.6 million, $119.4 million and $120.8 million for fiscal years 2020, 2019 and 2018, respectively. Prepaid advertising totaled $1.2 million and $3.7 million as of January 2, 2021 and December 28, 2019, respectively. Cash Equivalents Cash equivalents include highly liquid investments with an original maturity of three months or less. Cash equivalents are stated at cost, which approximates fair value. Allowance for Credit Losses The Company maintains an allowance for credit losses on accounts receivable that represents estimated losses resulting from its customers’ failure to make required payments. Company management evaluates the allowance for credit losses based on a review of current customer status and historical collection experience along with current and reasonable supportable forecasts of future economic conditions. Inventories The Company values its inventory at the lower of cost or net realizable value. Cost is determined by the LIFO method for certain domestic finished goods inventories. Cost is determined using the FIFO method for all raw materials, work-in-process and finished goods inventories in foreign countries and certain domestic finished goods inventories. The average cost of inventory is used for finished goods inventories of the Company’s consumer-direct business. The Company has applied these inventory cost valuation methods consistently from year to year. The Company reduces the carrying value of its inventories to the lower of cost or net realizable value for excess or obsolete inventories based upon assumptions about future demand and market conditions. If the Company were to determine that the estimated realizable value of its inventory is less than the carrying value of such inventory, the Company would provide a reserve for such difference as a charge to cost of sales. If actual market conditions are different from those projected, adjustments to those inventory reserves may be required. The adjustments would increase or decrease the Company’s cost of sales and net income in the period in which they were realized or recorded. Inventory quantities are verified at various times throughout the year by performing physical inventory counts and subsequently comparing those results to perpetual inventory balances. If the Company determines that adjustments to the inventory quantities are appropriate, an adjustment to the Company’s cost of goods sold and inventory is recorded in the period in which such determination was made. Property, Plant and Equipment Property, plant and equipment are stated on the basis of cost and include expenditures for buildings, leasehold improvements, furniture and fixtures, material handling systems, equipment and computer hardware and software. Normal repairs and maintenance are expensed as incurred. Depreciation of property, plant and equipment is computed using the straight-line method. The depreciable lives range from 14 to 20 years for buildings, from 5 to 15 years for leasehold improvements, from 3 to 10 years for furniture, fixtures and equipment and from 3 to 5 years for software. Deferred Financing Costs Deferred financing costs represent commitment fees, legal and other third-party costs associated with obtaining commitments for financing that result in a closing of such financings for the Company. Deferred financing costs related to fixed term borrowings are recorded as a reduction of long-term debt in the consolidated balance sheet. Deferred financing costs related to revolving credit facilities are recorded as an other noncurrent asset in the consolidated balance sheet. These costs are amortized into earnings through interest expense over the terms of the respective agreements. Goodwill and Other Intangibles Goodwill represents the excess of the purchase price over the fair value of net tangible and identifiable intangible assets of acquired businesses. Indefinite-lived intangibles include trademarks and trade names. Goodwill and intangible assets deemed to have indefinite lives are not amortized, but are subject to impairment tests at least annually. The Company reviews the carrying amounts of goodwill and indefinite-lived intangible assets by reporting unit at least annually, or when indicators of impairment are present, to determine if such assets may be impaired. The Company includes assumptions about expected future operating performance as part of a discounted cash flow analysis to estimate fair value. If the carrying value of these assets is not recoverable, based on the discounted cash flow analysis, management compares the fair value of the assets to the carrying value. Goodwill and indefinite-lived intangibles are considered impaired if the recorded value exceeds the fair value. The Company may first assess qualitative factors to determine whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying value. The Company would not be required to quantitatively determine the fair value of the indefinite-lived intangible unless the Company determines, based on the qualitative assessment, that it is more likely than not that its fair value is less than the carrying value. Future cash flows of the individual indefinite-lived intangible assets are used to measure their fair value after consideration by management of certain assumptions, such as forecasted growth rates and cost of capital, which are derived from internal projections and operating plans. The Company performs its annual testing for goodwill and indefinite-lived intangible asset impairment at the beginning of the fourth quarter of the fiscal year. See Note 4 for information related to the results of the Company's annual test. Impairment of Long-Lived Assets The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or an asset group may not be recoverable. Each impairment test is based on a comparison of the carrying amount of the asset or asset group to the future undiscounted net cash flows expected to be generated by the asset or asset group. If such assets are considered to be impaired, the impairment amount to be recognized is the amount by which the carrying value of the assets exceeds their fair value. Environmental The Company establishes a reserve for estimated environmental remediation costs based upon the evaluation of currently-available facts with respect to each individual affected site. The costs are recorded on an undiscounted basis when they are probable and reasonably estimable, generally no later than the completion of feasibility studies, the Company’s commitment to a plan of action, or approval by regulatory agencies. 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 records adjustments to the estimated costs if there are changes in the scope of the required remediation activity, extent of contamination, governmental regulations or remediation technologies. Environmental costs relating to existing conditions caused by past operations that do not contribute to current or future revenues are expensed as incurred. Assets related to potential recoveries from other responsible parties are recognized when a definitive agreement is reached and collection of cash is realizable. Recoveries of covered losses under insurance policies are recognized only when realization of the claim is deemed realized or realizable. Retirement Benefits The determination of the obligation and expense for retirement benefits is dependent on the selection of certain actuarial assumptions used in calculating such amounts. These assumptions include, among others, the discount rate, expected long-term rate of return on plan assets, mortality rates and rates of increase in compensation. These assumptions are reviewed with the Company’s actuaries and updated annually based on relevant external and internal factors and information, including, but not limited to, long-term expected asset returns, rates of termination, regulatory requirements and plan changes. See Note 13 for additional information. The Company has elected to measure its defined benefit plan assets and obligations as of December 31 of each year, regardless of the Company's actual fiscal year end date, which is the Saturday nearest to December 31. Income Taxes The provision for income taxes is based on the geographic dispersion of the earnings reported in the consolidated financial statements. A deferred income tax asset or liability is determined by applying currently-enacted tax laws and rates to the cumulative temporary differences between the carrying values of assets and liabilities for financial statement and income tax purposes. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in earnings in the period that includes the enactment date. A valuation allowance is recorded to reduce deferred tax assets to the amount that is more likely than not to be realized. In the event the Company determines it is more likely than not that the deferred tax assets will not be realized in the future, the valuation allowance adjustment to the deferred tax assets will be charged to earnings in the period in which the Company makes such a determination. The Company records an increase in liabilities for income tax accruals associated with tax benefits claimed on tax returns but not recognized for financial statement purposes (unrecognized tax benefits). In determining whether an uncertain tax position exists, the Company determines, based solely on its technical merits, whether the tax position is more likely than not to be sustained upon examination, and if so, a tax benef it is measured on a cumulative probability basis that is more likely than not to be realized upon the ultimate settlement. T he Company recognizes interest and penalties related to unrecognized tax benefits through interest expense and income tax expense, respectively. Foreign Currency For most of the Company’s international subsidiaries, the local currency is the functional currency. Assets and liabilities of these subsidiaries are translated into U.S. dollars at the year-end exchange rate. Operating statement amounts are translated at average exchange rates for each period. The cumulative translation adjustments resulting from changes in exchange rates are included in the consolidated balance sheets as a component of accumulated other comprehensive income (loss) in stockholders’ equity. Transaction gains and losses are included in the consolidated statements of operations and were not material for fiscal years 2020, 2019 and 2018.

New Accounting Standards (Notes

New Accounting Standards (Notes)	12 Months Ended
	Jan. 02, 2021
Accounting Policies [Abstract]
New Accounting Standards [Text Block]	NEW ACCOUNTING STANDARDS The Financial Accounting Standards Board (“FASB”) issued the following ASUs that have been adopted by the Company during fiscal 2020. 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 2016-13, Financial Instruments - Credit Losses (Topic 326): 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. The Company adopted ASU 2016-13 at the beginning of the first quarter on a prospective basis. The Company adjusted its business policies and processes relating to the measurement of allowances for credit losses to consider reasonable and supportable information to determine expected credit losses on accounts receivable. The adoption of the ASU did not have a material effect on the consolidated financial statements. ASU 2017-04, Intangibles Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment Eliminates step two of the goodwill impairment test under legacy US GAAP. Annual and interim goodwill impairment tests are performed by comparing the fair value of a reporting unit with its carrying amount and the amount by which the carrying amount exceeds the reporting unit’s fair value will be recognized as an impairment charge. The Company adopted the ASU at the beginning of the first quarter on a prospective basis. The adoption of the ASU did not have a significant impact on the Company’s financial statements and all prospective impairment tests will be completed under this standard.

Earnings Per Share (Notes)

Earnings Per Share (Notes)	12 Months Ended
	Jan. 02, 2021
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	EARNINGS PER SHARE The Company calculates earnings per share in accordance with FASB 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, 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: Fiscal Year (In millions, except per share data) 2020 2019 2018 Numerator: Net earnings (loss) attributable to Wolverine World Wide, Inc. $ (136.9) $ 128.5 $ 200.1 Less: net earnings attributed to participating share-based awards (0.8) (2.6) (7.5) Net earnings (loss) used to calculate basic earnings per share (137.7) 125.9 192.6 Adjustment for earnings reallocated to participating share-based awards — 0.1 1.8 Net earnings (loss) used to calculate diluted earnings per share $ (137.7) $ 126.0 $ 194.4 Denominator: Weighted average shares outstanding 81.8 85.7 94.8 Adjustment for unvested restricted common stock (0.8) (0.6) (1.8) Shares used to calculate basic earnings per share 81.0 85.1 93.0 Effect of dilutive share-based awards — 2.1 2.0 Shares used to calculate diluted earnings per share 81.0 87.2 95.0 Net earnings (loss) per share: Basic $ (1.70) $ 1.48 $ 2.07 Diluted $ (1.70) $ 1.44 $ 2.05 For fiscal years 2020, 2019 and 2018, 1,179,088, 133,505 and 25,230 outstanding stock options, respectively, have not been included in the denominator for the computation of diluted earnings per share because they were anti-dilutive. The Company has 2,000,000 authorized shares of $1 par value preferred stock, none of which was issued or outstanding as of January 2, 2021 or December 28, 2019. The Company has designated 150,000 shares of preferred stock as Series A junior participating preferred stock and 500,000 shares of preferred stock as Series B junior participating preferred stock for possible future issuance. The Company repurchased $21.0 million, $319.2 million and $174.7 million of Company common stock in fiscal years 2020, 2019 and 2018, respectively, under stock repurchase plans. In addition to the stock repurchase program activity, the Company acquired $24.8 million, $16.9 million and $8.8 million of Company common stock in fiscal years 2020, 2019 and 2018, respectively, in connection with employee transactions related to stock incentive plans.

Goodwill and Other Intangibles

Goodwill and Other Intangibles (Notes)	12 Months Ended
	Jan. 02, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	GOODWILL AND OTHER INTANGIBLE ASSETS The changes in the carrying amount of goodwill are as follows: Fiscal Year (In millions) 2020 2019 Goodwill balance at beginning of the year $ 438.9 $ 424.4 Acquisition of a business (see Note 19) — 12.0 Foreign currency translation effects 3.5 2.5 Goodwill balance at end of the year $ 442.4 $ 438.9 The Company did not recognize any goodwill impairment charges during fiscal years 2020, 2019 and 2018. The annual impairment testing indicated, for all reporting units tested quantitatively, that the fair values exceeded the respective carrying values. For the reporting units that the Company elected to test qualitatively, the Company concluded it to be more likely than not that their estimated fair values are greater than their respective carrying values. The Company’s indefinite-lived intangible assets, which comprise trade names and trademarks, totaled $382.3 million and $604.5 million as of January 2, 2021 and December 28, 2019, respectively. In the fourth quarter of fiscal 2020, after the completion of the annual impairment testing, the Company recognized a $222.2 million impairment charge for the Sperry ® trade name resulting from reductions in the future cash flow assumptions mainly due to the impact of the COVID-19 pandemic to the Sperry ® brand and an increase in the discount rate. The Sperry ® trade name was valued using the income approach, specifically the multi-period excess earnings method with the key assumptions used in the valuation being revenue growth, operating profit, and the discount rate. If the operating results for Sperry ® decline in future periods compared to current projections, the discount rate increases, increases in the assumed tax rate, or macroeconomic conditions deteriorate further due to the COVID-19 pandemic and adversely affect the value of the Company’s Sperry ® trade name balance, the Company may need to record additional non-cash impairment charges. The Company continues to monitor the effects of the COVID-19 pandemic, and actions taken by governments, businesses and individuals in response to the pandemic, on the global economy to assess the outlook for demand for the Company's products and the impact on the Company's business and financial performance. The carrying value of the Company’s Sperry ® trade name indefinite-lived intangible asset was $296.0 million as of January 2, 2021. Amortizable intangible assets are amortized using the straight-line method over their estimated useful lives. The combined gross carrying values and accumulated amortization for these amortizable intangibles are as follows: January 2, 2021 (In millions) Gross carrying Accumulated Net Average remaining life (years) Customer relationships $ 114.5 $ 44.9 $ 69.6 12 Other 18.7 15.3 3.4 3 Total $ 133.2 $ 60.2 $ 73.0 December 28, 2019 (In millions) Gross carrying Accumulated Net Average remaining life (years) Customer relationships $ 113.3 $ 38.8 $ 74.5 13 Other 17.3 14.0 3.3 3 Total $ 130.6 $ 52.8 $ 77.8 Amortization expense for these amortizable intangible assets was $7.1 million, $8.6 million and $6.2 million for fiscal years 2020, 2019 and 2018, respectively. Estimated aggregate amortization expense for such intangibles for the fiscal years subsequent to January 2, 2021 is as follows: (In millions) 2021 2022 2023 2024 2025 Amortization expense $ 7.1 $ 6.8 $ 6.6 $ 6.3 $ 6.0

Accounts Receivable (Notes)

Accounts Receivable (Notes)	12 Months Ended
	Jan. 02, 2021
Accounts Receivable [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 2021. Under the agreement, up to $75.0 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 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. Fiscal Year (In millions) 2020 2019 2018 Accounts receivable sold $ 14.1 $ 42.7 $ 264.3 Fees charged 0.1 0.2 1.3

Revenue From Contracts With Cus

Revenue From Contracts With Customers (Notes)	12 Months Ended
	Jan. 02, 2021
Revenue From Contracts With Customers [Abstract]
Revenue from Contract with Customer [Text Block]	REVENUE FROM CONTRACTS WITH CUSTOMERS Revenue Recognition and Performance Obligations The Company has agreements to license symbolic intellectual property with minimum guarantees or fixed consideration. The Company is due $26.4 million of remaining fixed transaction price under its license agreements as of January 2, 2021, which it expects to recognize 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 for the wholesale and consumer-direct sales channels, which are reconciled to the Company’s reportable segments. The wholesale channel includes royalty revenues, which operates in a similar manner as other wholesale revenues due to similar oversight and management, customer base, the performance obligation (footwear and apparel goods) and point in time completion of the performance obligation. Fiscal Year (in millions) 2020 2019 2018 Wolverine Michigan Group: Wholesale $ 814.2 $ 1,134.9 $ 1,129.2 Consumer-direct 236.8 164.8 143.0 Total 1,051.0 1,299.7 1,272.2 Wolverine Boston Group: Wholesale 508.9 743.4 762.0 Consumer-direct 187.1 167.5 133.5 Total 696.0 910.9 895.5 Other: Wholesale 40.5 57.9 64.1 Consumer-direct 3.6 5.2 7.4 Total 44.1 63.1 71.5 Total revenue $ 1,791.1 $ 2,273.7 $ 2,239.2 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, the revenue recognized by the Company, net of 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 fiscal years 2020 and 2019, related to the Company’s contract liabilities, was nominal. The Company’s contract balances are as follows: (In millions) January 2, December 28, Product returns reserve $ 15.6 $ 11.4 Customer markdowns reserve 3.7 4.4 Other sales incentives reserve 6.0 2.3 Customer rebates liability 13.4 12.0 Customer advances liability 8.2 7.2 The amount of variable consideration 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. Product Returns Consistent with industry practice, the Company offers limited product return rights for various 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 balance sheets. 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. Customer Markdowns Markdowns 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 balance sheets. 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 balance sheets depending on the nature of the item. Customer 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 balance sheets. Customer Advances The Company recognizes a liability for amounts received from customers before revenue is recognized. Customer advances are recognized as a current liability on the consolidated balance sheets.

Inventories

Inventories	12 Months Ended
	Jan. 02, 2021
Inventory Disclosure [Abstract]
Inventories	INVENTORIESThe Company used the LIFO method to value inventories of $35.6 million and $81.2 million at January 2, 2021 and December 28, 2019, respectively. During fiscal years 2020 and 2019, a reduction in inventory quantities resulted in a liquidation of applicable LIFO inventory quantities carried at lower costs in prior years. This LIFO liquidation decreased cost of goods sold by $3.9 million and $0.4 million, respectively. If the FIFO method had been used, inventories would have been $7.5 million and $11.4 million higher than reported at January 2, 2021 and December 28, 2019, respectively.

Debt (Notes)

Debt (Notes)	12 Months Ended
	Jan. 02, 2021
Debt Disclosure [Abstract]
Indebtedness	DEBT Total debt consists of the following obligations: (In millions) January 2, December 28, Term Loan A, due December 6, 2023 $ 180.0 $ 192.5 Senior Notes, 5.000% interest, due September 1, 2026 250.0 250.0 Senior Notes, 6.375% interest, due May 15, 2025 300.0 — Borrowings under revolving credit agreements — 360.0 Unamortized deferred financing costs (7.5) (4.1) Total debt $ 722.5 $ 798.4 On May 5, 2020, the Company entered into a Second Amendment (the “Amendment”) which amended its senior credit facility, which had previously been amended and restated as of December 6, 2018 (as so amended by the Amendment, the “Amended Senior Credit Facility”). In connection with the Amendment, the Company borrowed $171.0 million in aggregate principal amount of an incremental term loan (the “Incremental Term Loan”). The Incremental Term Loan was fully repaid by the end of fiscal 2020. The Amended Senior Credit Facility also includes a $200.0 million term loan facility (“Term Loan A”) and an $800.0 million Revolving Credit Facility, both with maturity dates of December 6, 2023, that remain unchanged as a result of the Amendment. The Amended Senior Credit Facility’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 December 6, 2023. The scheduled principal payments due over the next 12 months total $10.0 million as of January 2, 2021 and are recorded as current maturities of long-term debt on the consolidated balance sheets. The Revolving Credit Facility allows the Company to borrow up to an aggregate amount of $800.0 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 also had outstanding letters of credit under the Revolving Credit Facility of $6.1 million and $5.7 million as of January 2, 2021 and December 28, 2019, respectively. These outstanding borrowings and 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 0.125% to 1.000%, or (2) the Eurocurrency Rate plus an Applicable Margin as determined by the Company’s Consolidated Leverage Ratio, within a range of 1.125% to 2.000% (all capitalized terms used in this sentence are as defined in the Credit Agreement). At January 2, 2021, Term Loan A had weighted-average interest rate of 2.00%. 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 Amended Senior Credit Facility 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 Amended Senior Credit Facility requires compliance with the following financial covenants: a maximum Consolidated Leverage Ratio and a minimum Consolidated Interest Coverage Ratio (all capitalized terms used in this paragraph are as defined in the Amended Senior Credit Facility). As of January 2, 2021, the Company was in compliance with all covenants and performance ratios under the Amended Senior Credit Facility. On May 11, 2020 the Company issued $300.0 million aggregate principal amount of 6.375% senior notes due on May 15, 2025. Related interest payments are due semi-annually beginning on November 15, 2020. These senior notes are guaranteed by substantially all of the Company’s domestic subsidiaries The Company has $250.0 million of senior notes outstanding that are due on September 1, 2026. These senior notes bear interest at 5.00% and related interest payments are 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 borrowing s of $4.0 million that are un committed and, therefore, each borrowing against the facility is subject to approval by the lender. As of January 2, 2021 and December 28, 2019, there were no borrowings against this credit facility. The Company included in interest expense the amortization of deferred financing costs of $2.7 million, $1.6 million, and $2.8 million in fiscal years 2020, 2019 and 2018, respectively. Annual maturities of debt for the fiscal years subsequent to January 2, 2021 are as follows: (In millions) 2021 2022 2023 2024 2025 Thereafter Annual maturities of debt $ 10.0 $ 10.0 $ 160.0 $ — $ 300.0 $ 250.0

Property, Plant and Equipment (

Property, Plant and Equipment (Notes)	12 Months Ended
	Jan. 02, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment consisted of the following: (In millions) January 2, December 28, 2019 Land $ 3.9 $ 3.9 Buildings and leasehold improvements 119.6 123.2 Furniture, fixtures and equipment 135.1 136.8 Software 63.2 61.1 Gross cost 321.8 325.0 Less: accumulated depreciation 197.2 184.0 Property, plant and equipment, net $ 124.6 $ 141.0 Depreciation expense was $25.7 million, $24.1 million and $25.3 million for fiscal years 2020, 2019 and 2018, respectively.

Leases (Notes)

Leases (Notes)	12 Months Ended
	Jan. 02, 2021
Leases [Abstract]
Lessee, Operating Leases [Text Block]	LEASES Description of Leases The Company’s leases consist primarily of corporate offices, retail stores, distribution centers, showrooms, vehicles and office equipment. The Company leases assets in the normal course of business to meet its current and future needs while providing flexibility to its operations. The Company enters into contracts with third parties to lease specifically identified assets. Most of the Company’s leases have contractually specified renewal periods. Most retail store leases have early termination clauses that the Company can elect if stipulated sales amounts are not achieved. The Company determines the lease term for each lease based on the terms of each contract and factors in renewal and early termination options if such options are reasonably certain to be exercised. In response to the COVID-19 pandemic and the effect the pandemic had on the Company’s leased properties, the Company has been actively seeking rent relief from its landlords. The Company considered the FASB staff guidance issued in April 2020 in relation to accounting for lease concessions made in connection with the effects of the COVID-19 pandemic and elected to apply the temporary practical expedient to account for rent deferrals and abatements as though the enforceable rights and obligations existed in each contract. Depending on the timing of the future payments, amounts deferred and payable in future periods have been included in “Other accrued liabilities” and “Other liabilities” on the Company’s condensed consolidated balance sheets. The Company continued to recognize lease expense on a straight-line basis for its leases over the related lease terms. Accounting for Leases Under FASB ASC Topic 842, Leases , the Company has elected the practical expedient to account for lease components and nonlease components associated with individual leases as a single lease component for all of its leases. In addition, the Company has elected to account for multiple lease components as a single lease component. The Company’s leases may include variable lease costs such as payments based on changes to an index, payments based on a percentage of retail store sales, and maintenance, utilities, shared marketing or other service costs that are paid directly to the lessor under terms of the lease. The Company recognizes variable lease payments when the amounts are incurred and determinable. The Company has elected to account for leases of less than one year as short-term leases and accordingly does not recognize a right-of-use asset or lease liability for these leases. The Company recognizes rent expense on a straight-line basis over the lease term. The Company subleases certain portions of leased offices and distribution centers that exceed the Company’s current operational needs. Since the Company utilizes the majority of the leased space and retains the obligation to the lessor, the underlying leases continue to be accounted for as operating leases. Sublease income is recognized on a straight-line basis over the term of the sublease, and beginning in fiscal 2019, is recognized in other expense (income), net on the consolidated statements of operations. The Company recognizes a lease liability in current and noncurrent liabilities equal to the present value of the fixed future lease payments using an incremental borrowing rate as of the commencement date of each lease. The incremental borrowing rate is based on an interest rate that the Company would normally pay to borrow on a collateralized basis over a similar term and amount equal to the lease payments. The weighted-average discount rate for operating leases as of January 2, 2021 is 5.2%. The Company also recognizes a right-of-use asset, which is equal to the lease liability as of January 2, 2021 adjusted for the remaining balance of accrued rent and unamortized lease incentives. The following is a summary of the Company’s lease cost. Fiscal Year (In millions) 2020 2019 Operating lease cost $ 34.1 $ 32.6 Variable lease cost 12.3 14.5 Short-term lease cost 1.2 1.2 Sublease income (4.8) (4.0) Total lease cost $ 42.8 $ 44.3 The weighted-average remaining lease term for operating leases as of January 2, 2021 is 9.5 years. Future undiscounted cash flows for operating leases for the fiscal periods subsequent to January 2, 2021 are as follows: (In millions) Operating Leases 2021 $ 33.9 2022 29.5 2023 21.7 2024 18.3 2025 17.5 Thereafter 90.2 Total future payments 211.1 Less: imputed interest 46.8 Recognized lease liability $ 164.3 The Company made cash payments of $28.6 million and $33.2 million for operating lease liabilities during fiscal 2020 and 2019, respectively. The Company entered into new or amended leases that resulted in the noncash recognition of right-of-use assets and lease liabilities of $6.0 million and $26.8 million during fiscal 2020 and 2019, respectively. The Company did not enter into any real estate leases with commencement dates subsequent to January 2, 2021. Rental expense under all operating leases, under the previous lease standard ASC 840 and consisting primarily of minimum rentals, totaled $32.0 million in fiscal year 2018. The Company recognized sublease income of $2.8 million in fiscal year 2018.

Financial Instruments and Risk

Financial Instruments and Risk Management	12 Months Ended
	Jan. 02, 2021
Investments, All Other Investments [Abstract]
Financial Instruments and Risk Management	DERIVATIVE FINANCIAL INSTRUMENTS The Company follows ASC 815, which requires that all derivative instruments be recorded on the consolidated 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 designated as cash flow hedges 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 extended out to a maximum of 538 days and 545 days as of January 2, 2021 and December 28, 2019, respectively. When foreign exchange contracts are determined not to be highly effective or are terminated before their contractual termination dates, the Company would remove the hedge designation from those contracts and reclassify into earnings the unrealized gains or losses that would otherwise be included in accumulated other comprehensive income (loss) within stockholders’ equity. During fiscal 2020 and 2019, the Company reclassified $0.6 million and $1.2 million respectively, to other income for foreign currency derivatives that were no longer deemed highly effective. The Company also utilizes foreign currency forward exchange contracts that are not designated as hedging instruments to manage foreign currency transaction 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 had an interest rate swap arrangement to mitigate interest volatility with regard to variable rate borrowings under the Amended Senior Credit Facility. The interest rate swap exchanged floating rate for fixed rate interest payments without the exchange of the underlying notional amounts, and had been designated as cash flow hedge of the underlying debt. The arrangement was terminated, effective December 29, 2020, in association with the repayment of the Incremental Term Loan. The fair value of the swap at the termination date of $7.3 million was required to be paid in full. Consequently, unrealized losses of $4.9 million in accumulated other comprehensive income that were associated with variable rate debt interest payments that were no longer probable were reclassified to “Debt extinguishment, interest rate swap termination, and other costs“ in the accompanying consolidated statement of operations. 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, offsetting the currency translation adjustment related to the underlying net investment that is also recorded in accumulated other comprehensive income. All other changes in fair value are recorded in interest expense. 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 hedge’s inception, and continues to assess on an ongoing basis, whether the derivative used in the hedging transaction is highly effective in offsetting changes in the net investment in the foreign operations. The notional amounts of the Company’s derivative instruments are as follows: (Dollars in millions) January 2, December 28, 2019 Foreign exchange contracts: Hedge contracts $ 250.7 $ 246.3 Non-hedge contracts — 7.3 Interest rate swap — 355.8 Cross currency swap 79.8 79.8 The recorded fair values of the Company’s derivative instruments are as follows: (In millions) January 2, December 28, 2019 Financial assets: Foreign exchange contracts - hedge $ — $ 2.3 Financial liabilities: Foreign exchange contracts - hedge $ (8.8) $ (1.8) Interest rate swap — (1.8) Cross currency swap (10.8) (3.0)

Stock-Based Compensation (Notes

Stock-Based Compensation (Notes)	12 Months Ended
	Jan. 02, 2021
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	STOCK-BASED COMPENSATION The Company accounts for stock-based compensation in accordance with the fair value recognition provisions of ASC Topic 718, Compensation – Stock Compensation . The Company recognized compensation expense of $28.9 million, $24.5 million and $31.2 million and related income tax benefits of $5.6 million, $4.8 million and $6.4 million for grants under its stock-based compensation plans in the statements of operations for fiscal years 2020, 2019 and 2018, respectively. The Company generally grants restricted stock or units (“Restricted Awards”), performance-based restricted stock or units (“Performance Awards”) and stock options under its stock-based compensation plans. As of January 2, 2021, the Company had 6,060,880 stock incentive units (stock options, stock appreciation rights, restricted stock, restricted stock units and common stock) available for issuance under the Stock Incentive Plan of 2016, as amended and restated ("Stock Plan"). Each stock option or stock appreciation right granted counts as 1.0 stock incentive unit. Stock options granted under the Stock Plan have an exercise price equal to the fair market value of the underlying stock on the grant date, expire no later than ten years from the grant date and generally vest over three years. All other awards granted, including Restricted Awards and Performance Awards, count as 2.6 stock incentive units for each share, restricted share or restricted stock unit granted. Restricted Awards issued under the Stock Plan are subject to certain restrictions, including a prohibition against any sale, transfer or other disposition by the officer or employee during the vesting period (except for certain transfers for estate planning purposes for certain officers), and a requirement to forfeit all or a certain portion of the award upon certain terminations of employment. These restrictions typically lapse over a three- to four-year period from the date of the award. The Company has elected to recognize expense for these stock-based incentive plans ratably over the vesting term on a straight-line basis. Certain option and restricted awards provide for accelerated vesting under various scenarios, including retirement, death and disability, and upon a change in control of the Company. Awards issued to employees that meet the specified retirement age and service requirements are vested upon the employee's retirement in accordance with plan provisions and the applicable award agreements issued under the Stock Plan. The Company issues shares to plan participants upon exercise or vesting of stock-based incentive awards from either authorized, but unissued shares or treasury shares. The Board of Directors awards an annual grant of Performance Awards to certain plan participants. The number of Performance Awards that will be earned (and eligible to vest) during the performance period will depend on the Company’s level of success in achieving two specifically identified performance targets. Any portion of the Performance Awards that are not earned by the end of the three-year measurement period will be forfeited. The final determination of the number of Performance Awards to be issued in respect to an award is determined by the Compensation Committee of the Company’s Board of Directors. Restricted Awards and Performance Awards A summary of the unvested Restricted Awards and Performance Awards is as follows: Restricted Weighted- Performance Weighted- Unvested at December 30, 2017 2,025,072 $ 21.70 1,690,668 $ 21.54 Granted 609,276 31.81 384,657 35.10 Vested (560,263) 22.93 (229,023) 26.64 Forfeited (153,712) 23.81 (215,284) 26.18 Unvested at December 29, 2018 1,920,373 $ 24.38 1,631,018 $ 23.42 Granted 554,092 34.73 370,830 37.10 Vested (681,938) 24.63 (654,021) 17.46 Forfeited (173,611) 28.47 (220,725) 19.74 Unvested at December 28, 2019 1,618,916 $ 27.36 1,127,102 $ 31.94 Granted 1,416,117 22.59 455,207 34.00 Vested (1,122,811) 22.07 (451,334) 23.51 Forfeited (268,205) 29.67 (125,653) 35.91 Unvested at January 2, 2021 1,644,017 $ 26.39 1,005,322 $ 35.25 As of January 2, 2021, there was $18.5 million of unrecognized compensation expense related to unvested Restricted Awards, which is expected to be recognized over a weighted-avera ge period of 1.5 years. The total fair value of Restricted Awards vested during the year ended January 2, 2021 was $35.0 million. As of December 28, 2019, there was $19.9 million of unrecognized compensation expense related to unvested Restricted Awards, which was expected to be recognized over a weighted-average period of 1.5 years. The total fair value of Restricted Awards vested during the year ended December 28, 2019 was $23.7 million. As of December 29, 2018, there was $20.2 million of unrecognized compensation expense related to unvested Restricted Awards, which was expected to be recognized over a weighted-average period of 1.6 years. The total fair value of Restricted Awards vested during the year ended December 29, 2018 was $17.4 million. As of January 2, 2021, there was $1.4 million of unrecognized compensation expense related to unvested Performance Awards, which is expected to be recognized over a weighted-average period of 1.4 years. The total fair value of Performance Awards vested during the year ended January 2, 2021 was $28.0 million. As of December 28, 2019, there was $4.5 million of unrecognized compensation expense related to unvested Performance Awards, which was expected to be recognized over a weighted-average period of 1.1 years. The total fair value of Performance Awards vested during the year ended December 28, 2019 was $22.8 million. As of December 29, 2018, there was $19.0 million of unrecognized compensation expense related to unvested Performance Awards, which was expected to be recognized over a weig hted-average period of 1.7 years. The total fair value of Performance Awards vested during the year ended December 29, 2018 was $7.3 million. Stock Options The Company estimated the fair value of employee stock options on the date of grant using the Black-Scholes-Merton formula. The estimated weighted-average fair value for each option granted was $8.20, $9.07 and $8.20 per share for fiscal years 2020, 2019 and 2018, respectively, with the following weighted-average assumptions. Fiscal Year 2020 2019 2018 Expected market price volatility (1) 31.2 % 29.6 % 29.6 % Risk-free interest rate (2) 1.5 % 2.5 % 2.5 % Dividend yield (3) 1.2 % 1.0 % 0.8 % Expected term (4) 4 years 4 years 4 years (1) Based on historical volatility of the Company’s common stock. The expected volatility is based on the daily percentage change in the price of the stock over the four years prior to the grant. (2) Represents the U.S. Treasury yield curve in effect for the expected term of the option at the time of grant. (3) Represents the Company’s estimated cash dividend yield for the expected term. (4) Represents the period of time that options granted are expected to be outstanding. As part of the determination of the expected term, the Company concluded that all employee groups exhibit similar exercise and post-vesting termination behavior. A summary of the stock option transactions is as follows: Shares Under Option Weighted-Average Exercise Price Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (In millions) Outstanding at December 30, 2017 6,089,664 $ 20.05 5.8 $ 72.1 Granted 28,171 31.85 Exercised (1,359,387) 17.69 Canceled (56,446) 17.12 Outstanding at December 29, 2018 4,702,002 $ 20.83 5.2 $ 54.5 Granted 25,471 34.81 Exercised (681,389) 17.87 Canceled (12,977) 23.97 Outstanding at December 28, 2019 4,033,107 $ 21.41 4.4 $ 49.8 Granted 28,171 32.85 Exercised (788,883) 18.39 Canceled (12,990) 25.39 Outstanding at January 2, 2021 3,259,405 $ 22.22 3.9 $ 29.7 Unvested at January 2, 2021 (54,541) Exercisable at January 2, 2021 3,204,864 $ 22.03 3.8 $ 29.7 The total pretax intrinsic value of stock options exercised during fiscal years 2020, 2019 and 2018 was $9.3 million, $10.7 million and $21.2 million, respectively. As of January 2, 2021, there was $0.1 million of unrecognized compensation expense related to stock option grants expected to be recognized over a weighted-average period of 0.9 years. As of December 28, 2019 and December 29, 2018, there was $0.2 million and $0.4 million, respectively, of unrecognized compensation expense related to stock option awards expected to be recognized over a weighted-average period of 1.4 years and 0.8 years, respectively. The aggregate intrinsic value in the preceding table represents the total pretax intrinsic value, based on the Company’s closing stock price as of each fiscal year end, which would have been received by the option holders had all option holders exercised options, where the market price o f the Company's stock was above the strike price ("in-the-money"), as of that date. The total number of in-the-money options exercisable as of January 2, 2021, based on the Company’s closing stock price of $31.25 per share, was 3,096,685 and the weighted-average exercise price was $21.66 per share . As of December 28, 2019, 3,974,757 outstanding options were exercisable and in-the-money, with a weighted-average exercise price of $21.29 per share.

Retirement Plans (Notes)

Retirement Plans (Notes)	12 Months Ended
	Jan. 02, 2021
Retirement Benefits [Abstract]
Retirement Plans	RETIREMENT PLANS The Company has two non-contributory, defined benefit pension plans that provide retirement benefits to less than half of its domestic employees. The Company’s principal defined benefit pension plan, which is closed to new participants, provides benefits based on the employee’s years of service and final average earnings. The second plan is closed to new participants and no longer accrue future benefits. The Company has a Supplemental Executive Retirement Plan (the “SERP”) for certain current and former employees that entitles a participating employee to receive payments from the Company following retirement based on the employee’s years of service and final average earnings (as defined in the SERP). Under the SERP, the employees can elect early retirement with a corresponding reduction in benefits. The Company also has individual deferred compensation agreements with certain former employees that entitle those employees to receive payments from the Company following retirement, generally for the duration of their lives. The Company maintains life insurance policies with a cash surrender value of $44.0 million at January 2, 2021 and $66.8 million at December 28, 2019 that are intended to partially fund deferred compensation benefits under the SERP and deferred compensation agreements. The Company has two defined contribution 401(k) plans covering substantially all domestic employees that provide for discretionary Company contributions based on the amount of participant deferrals. The Company recognized expense for its contributions to the defined contribution plans of $4.2 million, $5.2 million and $4.5 million in fiscal years 2020, 2019 and 2018, respectively. The Company also has certain defined contribution plans at foreign subsidiaries. Contributions to these plans were $1.3 million, $1.1 million and $1.1 million in fiscal years 2020, 2019 and 2018, respectively. The Company also has a benefit plan at a foreign location that provides for retirement benefits based on years of service. The obligation recorded under this plan was $1.0 million at January 2, 2021 and $0.9 million at December 28, 2019 and was recognized as a deferred compensation liability on the consolidated balance sheets. The following summarizes the status of and changes in the Company’s assets and related obligations for its pension plans (which include the Company’s defined benefit pension plans and the SERP) for the fiscal years 2020 and 2019: Fiscal Year (In millions) 2020 2019 Change in projected benefit obligations: Projected benefit obligations at beginning of the year $ 401.0 $ 348.8 Service cost pertaining to benefits earned during the year 6.4 5.5 Interest cost on projected benefit obligations 14.2 15.2 Actuarial losses 48.1 45.4 Benefits paid to plan participants (13.9) (13.9) Projected benefit obligations at end of the year $ 455.8 $ 401.0 Change in fair value of pension assets: Fair value of pension assets at beginning of the year $ 287.6 $ 254.4 Actual return on plan assets 28.8 44.7 Company contributions - SERP 2.5 2.4 Benefits paid to plan participants (13.9) (13.9) Fair value of pension assets at end of the year $ 305.0 $ 287.6 Funded status $ (150.8) $ (113.4) Amounts recognized in the consolidated balance sheets: Current liabilities $ (3.8) $ (3.7) Noncurrent liabilities (147.0) (109.7) Net amount recognized $ (150.8) $ (113.4) Funded status of pension plans and SERP (supplemental): Funded status of qualified defined benefit plans and SERP $ (150.8) $ (113.4) Nonqualified trust assets (cash surrender value of life insurance) recorded in other assets and intended to satisfy the projected benefit obligation of unfunded SERP obligations 36.6 59.6 Net funded status of pension plans and SERP (supplemental) $ (114.2) $ (53.8) Unrecognized net actuarial loss recognized in accumulated other comprehensive income was $92.8 million and $61.4 million, and amounts net of tax were $73.5 million and $48.7 million, as of January 2, 2021 and December 28, 2019, respectively. The accumulated benefit obligations for all defined benefit pension plans and the SERP were $430.2 million at January 2, 2021 and $378.4 million at December 28, 2019 . The increase in benefit obligation for fiscal 2020 was the result of actuarial losses caused by changes to the discount rate. The actuarial loss included in accumulated other comprehensive loss and expected to be recognized in net periodic pension expense during fiscal 2021 is $13.8 million. The following is a summary of net pension and SERP expense recognized by the Company: Fiscal Year (In millions) 2020 2019 2018 Service cost pertaining to benefits earned during the year $ 6.4 $ 5.5 $ 6.3 Interest cost on projected benefit obligations 14.2 15.2 16.5 Expected return on pension assets (18.7) (17.7) (21.5) Net amortization loss 6.6 2.6 3.3 Settlement loss — — 7.2 Net pension expense $ 8.5 $ 5.6 $ 11.8 Less: SERP expense 5.2 5.4 5.5 Qualified defined benefit pension plans expense $ 3.3 $ 0.2 $ 6.3 During fiscal 2018, the Company completed a pension annuity purchase, which settled $66.6 million of projected benefit obligations. The Company recognized a settlement loss of $7.2 million due to the annuity purchase. The weighted-average actuarial assumptions used to determine the benefit obligation amounts and the net periodic benefit cost for the Company’s pension and post-retirement plans are as follows: Fiscal Year 2020 2019 Weighted-average assumptions used to determine benefit obligations at fiscal year-end: Discount rate 2.85% 3.60% Rate of compensation increase - pension 4.18% 4.23% Rate of compensation increase - SERP 7.00% 7.00% Weighted average assumptions used to determine net periodic benefit cost for the years ended: Discount rate 3.60% 4.46% Expected long-term rate of return on plan assets 6.75% 6.75% Rate of compensation increase - pension 4.23% 3.82% Rate of compensation increase - SERP 7.00% 7.00% Unrecognized net actuarial losses exceeding certain corridors are amortized over one of two amortization periods, based on each plan's election. The amortization period is either a five-year period, unless the minimum amortization method based on average remaining service periods produces a higher amortization; or, over the average remaining service period of participants expected to receive benefits. The Company utilizes a bond matching calculation to determine the discount rate. A hypothetical bond portfolio is created based on a presumed purchase of high-quality corporate bonds with maturities that match the plan’s expected future cash outflows. The discount rate is the resulting yield of the hypothetical bond portfolio. The discount rate is used in the calculation of the year-end pension liability and the service and interest cost for the subsequent year. The long-term rate of return is based on overall market expectations for a balanced portfolio with an asset mix similar to the Company’s, utilizing historic returns for broad market and fixed income indices. The Company’s investment policy for plan assets uses a blended approach of U.S. and foreign equities combined with U.S. fixed income investments. The target investment allocations as of January 2, 2021 were 57% in equity securities, 38% in fixed income securities and 5% in real estate investments. Within the equity and fixed income classifications, the investments are diversified. The Company’s asset allocations by asset category and fair value measurement are as follows: January 2, 2021 December 28, 2019 (In millions) Total % of Total Total % of Total Equity securities $ 173.3 1 56.8 % $ 162.2 1 56.4 % Fixed income securities 112.7 1 37.0 % 106.2 1 36.9 % Real estate investments 16.7 1 5.5 % 16.9 1 5.9 % Other 2.3 2 0.7 % 2.3 2 0.8 % Fair value of plan assets $ 305.0 100.0 % $ 287.6 100.0 % 1 In accordance with ASC 820, Fair Value Measurement (“ASC 820”), certain investments are measured at fair value using the net asset value per share as a practical expedient. These assets have not been classified in the fair value hierarchy. 2 In accordance with ASC 820, investments have been measured using valuation techniques in which one or more significant inputs are unobservable (Level 3). See Note 16 for additional information. The Company does not expect to make any contributions to its qualified defined benefit pension plans in fiscal 2021 and expects to make $3.8 million in contributions to the SERP in fiscal 2021. Expected benefit payments for the fiscal years subsequent to January 2, 2021 are as follows: (In millions) 2021 2022 2023 2024 2025 2026-2030 Expected benefit payments $ 16.4 $ 17.1 $ 17.8 $ 18.6 $ 19.3 $ 105.7

Income Taxes (Notes)

Income Taxes (Notes)	12 Months Ended
	Jan. 02, 2021
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The geographic components of earnings (loss) before income taxes are as follows: Fiscal Year (In millions) 2020 2019 2018 United States $ (218.6) $ 79.3 $ 159.2 Foreign 34.5 66.6 68.2 Earnings (loss) before income taxes $ (184.1) $ 145.9 $ 227.4 The provisions for income tax expense (benefit) consist of the following: Fiscal Year (In millions) 2020 2019 2018 Current expense: Federal $ 0.7 $ 10.6 $ 6.7 State 0.6 0.5 2.4 Foreign 8.3 12.5 10.9 Deferred expense (credit): Federal (51.6) (5.8) 2.1 State (4.4) (2.0) 3.3 Foreign 0.9 1.2 1.7 Income tax provision $ (45.5) $ 17.0 $ 27.1 A reconciliation of the Company’s total income tax expense and the amount computed by applying the statutory federal income tax rate to earnings before income taxes is as follows: Fiscal Year (In millions) 2020 2019 2018 Income taxes at U.S. statutory rate of 21% $ (38.7) $ 30.6 $ 47.7 State income taxes, net of federal income tax (8.1) 0.5 2.8 Foreign earnings taxed at rates different from the U.S. statutory rate: Hong Kong (3.3) (8.5) (10.8) Other 1.2 2.8 (3.1) Adjustments for uncertain tax positions (1.4) (1.0) (1.4) Change in valuation allowance 4.7 (0.2) 3.3 Change in state tax rates — (1.5) 1.9 Global Intangible Low Tax Income tax 2.5 2.1 3.7 Foreign Derived Intangible Income tax benefit (1.6) (4.4) (6.8) Non-deductible executive compensation 1.6 2.0 0.9 Permanent adjustments related to employee share based compensation (4.6) (5.1) (3.8) Deferred tax on future cash dividends 1.0 0.6 (0.9) Other Permanent adjustments and non-deductible expenses 1.0 (0.6) (6.7) Other 0.2 (0.3) 0.3 Income tax provision $ (45.5) $ 17.0 $ 27.1 Significant components of the Company’s deferred income tax assets and liabilities are as follows: (In millions) January 2, December 28, Deferred income tax assets: Accounts receivable and inventory valuation allowances $ 3.5 $ 5.7 Deferred compensation accruals 4.5 4.0 Accrued pension expense 33.4 25.3 Stock-based compensation 9.1 14.5 Net operating loss and foreign tax credit carryforwards 21.0 17.6 Book over tax depreciation and amortization 0.4 0.5 Tenant lease expenses 4.4 3.6 Environmental reserve 24.9 15.4 Other 9.1 5.1 Total gross deferred income tax assets 110.3 91.7 Less valuation allowance (22.3) (17.6) Net deferred income tax assets 88.0 74.1 Deferred income tax liabilities: Intangible assets (105.3) (157.5) Tax over book depreciation and amortization (10.7) (8.6) Other (4.3) (4.1) Total deferred income tax liabilities (120.3) (170.2) Net deferred income tax liabilities $ (32.3) $ (96.1) The valuation allowance for deferred income tax assets as of January 2, 2021 and December 28, 2019 was $22.3 million and $17.6 million, respectively. The net increase in the total valuation allowance during fiscal 2020 was $4.7 million. The valuation allowance for both years is primarily related to U.S. state and local net operating loss carryforwards as well as a valuation allowance against state deferred tax assets for certain U.S. legal entities, foreign net operating loss carryforwards and tax credit carryforwards in foreign jurisdictions. The ultimate realization of the deferred tax assets depends on the generation of future taxable income in foreign jurisdictions as well as state and local tax jurisdictions. The current year change in the valuation allowance results in an increase against the state deferred tax assets of $0.6 million, an increase related to state net operating loss carryforward of $1.9 million, and a net increase relating to the foreign net operating losses and foreign tax credits and other deferred tax assets of $2.2 million. At January 2, 2021, the Company had foreign net operating loss carryforwards of $30.1 million, which have expirations ranging from 2021 to an unlimited term during which they are available to offset future foreign taxable income. The Company had U.S. state net operating loss carryforwards and Internal Revenue Code section 163(j) interest expense carryforwards of $189.0 million and $22.0 million respectively, which have expirations ranging from 2022 to an unlimited term during which they are available to offset future state taxable income. The Company also had tax credit carryforwards in foreign jurisdictions of $3.1 million, which are available for an unlimited carryforward period to offset future foreign taxes. The following table summarizes the activity related to the Company’s unrecognized tax benefits: Fiscal Year (In millions) 2020 2019 Unrecognized tax benefits at beginning of the year $ 6.9 $ 7.9 Increases related to current year tax positions 2.6 1.6 Decreases related to prior year positions (1.3) (1.4) Decreases relating to settlements with taxing authorities (2.4) (1.2) Decrease due to lapse of statute (0.3) — Unrecognized tax benefits at end of the year $ 5.5 $ 6.9 The portion of the unrecognized tax benefits that, if recognized currently, would reduce the annual effective tax rate was $5.0 million and $6.5 million as of January 2, 2021 and December 28, 2019, respectively. The Company recognizes interest and penalties related to unrecognized tax benefits through interest expense and income tax expense, respectively. Interest accrued related to unrecognized tax benefits was $0.6 million and $1.5 million as of January 2, 2021 and December 28, 2019, respectively. 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 material to the consolidated financial statements. For the majority of tax jurisdictions, 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 2017. The Company intends to repatriate cash held in foreign jurisdictions and as such has recorded a deferred tax liability related to additional state taxes and foreign withholding taxes on the future dividends received in the U.S. from the foreign subsidiaries of $2.2 million and $1.2 million for fiscal years 2020 and 2019, respectively. The Company intends to permanently reinvest all non-cash undistributed earnings outside of the U.S. and has, therefore, not established a deferred tax liability on the amount of non-cash foreign undistributed earnings of $229.1 million at January 2, 2021. 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.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss) (Notes)	12 Months Ended
	Jan. 02, 2021
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)Accumulated other comprehensive income 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 accumulated other comprehensive income (loss) during fiscal years 2020 and 2019 is as follows: (In millions) Foreign Derivatives Pension Total Balance at December 29, 2018 $ (53.0) $ 0.9 $ (36.2) $ (88.3) Other comprehensive income (loss) before reclassifications (1) 5.4 0.9 (14.6) (8.3) Amounts reclassified from accumulated other comprehensive income (loss) — (9.8) (2) 2.6 (3) (7.2) Income tax (expense) benefit — 2.2 (0.5) 1.7 Net reclassifications — (7.6) 2.1 (5.5) Net current-period other comprehensive income (loss) (1) 5.4 (6.7) (12.5) (13.8) Balance at December 28, 2019 $ (47.6) $ (5.8) $ (48.7) $ (102.1) Other comprehensive income (loss) before reclassifications (1) 10.8 (17.6) (30.0) (36.8) Amounts reclassified from accumulated other comprehensive income (loss) — 3.5 (2) 6.6 (3) 10.1 Income tax (expense) benefit — (0.4) (1.4) (1.8) Net reclassifications — 3.1 5.2 8.3 Net current-period other comprehensive income (loss) (1) 10.8 (14.5) (24.8) (28.5) Balance at January 2, 2021 $ (36.8) $ (20.3) $ (73.5) $ (130.6) (1) Other comprehensive income (loss) is reported net of taxes and noncontrolling interest. (2) Amounts related to foreign currency derivatives deemed to be highly effective are included in cost of goods sold. Amounts related to foreign currency derivatives that are no longer deemed to be highly effective are included in other income. 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 (Notes)

Fair Value Measurements (Notes)	12 Months Ended
	Jan. 02, 2021
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 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) January 2, 2021 December 28, 2019 Financial assets: Derivatives $ — $ 2.3 Financial liabilities: Derivatives $ (19.6) $ (6.6) The fair value of foreign currency forward exchange contracts represents the estimated receipts or payments necessary to terminate the contracts. The fair value of the cross-currency swap is determined using the current forward rates and changes in the spot rate. Nonrecurring Fair Value Measurements Indefinite-lived intangible assets are tested annually, or if a triggering event occurs that indicates an impairment loss may have been incurred, using fair value measurements with unobservable inputs (Level 3). The Company recorded an impairment charge of $222.2 million on the Sperry ® indefinite-lived trade name in fiscal 2020. Refer to Note 4, “Goodwill and Other Intangibles” for additional discussion on the Sperry ® trade name impairment. 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 are as follows: (In millions) January 2, 2021 December 28, 2019 Carrying value $ 722.5 $ 798.4 Fair value 765.4 817.6

Litigation and Contingencies (N

Litigation and Contingencies (Notes)	12 Months Ended
	Jan. 02, 2021
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 Company 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™. 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. In January 2018, the Michigan Department of Environmental Quality (“MDEQ”, now known as the Michigan Department of Environment, Great Lakes, and Energy (“EGLE”)) enacted a drinking water criterion of 70 ppt combined for PFOA and PFOS, which set an official state standard for acceptable concentrations of these contaminants in groundwater used for drinking water purposes. On August 3, 2020, Michigan changed the standards for PFOA and PFOS in drinking water to 8 and 16 ppt, respectively, and set standards for four other PFAS substances. Civil and Regulatory Actions of EGLE and EPA On January 10, 2018, EGLE filed a civil action against the Company in the U.S. District Court for the Western District of Michigan under the federal Resource Conservation and Recovery Act of 1976 (“RCRA”) and Parts 201 and 31 of the Michigan Natural Resources and Environmental Protection Act (“NREPA”) alleging that the Company’s past and present handling, storage, treatment, transportation and/or disposal of solid waste at the Company’s properties has resulted in releases of PFAS at levels exceeding applicable Michigan cleanup criteria for PFOA and PFOS (the "EGLE Action"). Plainfield and Algoma Townships intervened in the EGLE Action alleging claims under RCRA, NREPA, the Comprehensive Environmental Response, Compensation, and Liability Act (“CERCLA”) and common law nuisance. On February 3, 2020, the parties entered into a consent decree resolving the EGLE Action, which was approved by U.S. District Judge Janet T. Neff on February 19, 2020 (the “Consent Decree”). Under the Consent Decree, the Company agreed to pay for an extension of Plainfield Township’s municipal water system to more than 1,000 properties in Plainfield and Algoma Townships, subject to an aggregate cap of $69.5 million. The Company also agreed to continue maintaining water filters for certain homeowners, resample certain residential wells for PFAS, continue remediation at the Company’s Tannery property and House Street site, and conduct further investigations and monitoring to the assess the presence of PFAS in area groundwater. The Company’s activities under the Consent Decree are not materially impacted by the drinking water standards that became effective on August 3, 2020. On December 19, 2018, the Company filed a third-party complaint against 3M Company seeking, among other things, recovery of the Company’s remediation and other costs incurred in defense of the EGLE Action ("the 3M Action"). On June 20, 2019, the 3M Company filed a counterclaim against the Company in response to the 3M Action, seeking, among other things, contractual and common law indemnity and contribution under CERCLA and Part 201 of NREPA. On February 20, 2020, the Company and 3M Company entered into a settlement agreement resolving the 3M Action, under which 3M Company paid the Company a lump sum amount of $55.0 million during the first quarter of fiscal 2020. 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) with an effective date of February 1, 2018. The Order pertained to specified removal actions at the Company's Tannery and House Street sites, including certain time critical removal actions subsequently identified in an April 29, 2019 letter from the EPA, to abate the actual or threatened release of hazardous substances at or from the sites. On October 28, 2019, the EPA and the Company entered into an Administrative Settlement and Order on Consent (“AOC”) that supersedes the Order and addresses the agreed-upon removal actions outlined in the Order. The Company has completed almost all of these activities related to the AOC, and anticipates completing the remaining activities in 2021 pursuant to approved work plans. The Company discusses its reserve for remediation costs in the environmental liabilities section below. Individual and Class Action Litigation Individual lawsuits and three 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. The three putative class action lawsuits were subsequently refiled in the U.S. District Court for the Western District of Michigan as a single consolidated putative class action lawsuit. 3M Company has been named as a co-defendant in the individual lawsuits and consolidated putative class action lawsuit. In addition, the current owner of a former landfill and gravel mining operation sued the Company seeking damages and cost recovery for property damage allegedly caused by the Company’s disposal of tannery waste containing PFAS (this suit collectively with the individual lawsuits and putative class action, the “Litigation Matters”). Assessing potential liability with respect to the Litigation Matters at this time is difficult. The Litigation Matters are in various stages of discovery and related motions. In addition, there is minimal direct and relevant precedent for these types of claims related to PFAS, and 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 Litigation Matters are probable, and therefore no amounts are currently reserved for these claims. The Company intends to continue to vigorously defend itself against these claims. In addition, in December 2018 the Company filed a lawsuit against certain of its historic liability insurers, seeking their participation in the Company's defense and remediation efforts. The Company recognized $8.3 million in recoveries from legacy insurance policies in fiscal 2020. The recoveries resulted from interim payment agreements reached with the insurers and are pending final resolution of the lawsuit filed by the Company. 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, intellectual property, and other environmental matters. 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 to the Company and reserves for liabilities that the Company has 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 following is a summary of the activity with respect to the environmental remediation reserve established by the Company: Fiscal Year (In millions) 2020 2019 Remediation liability at beginning of the year $ 124.4 $ 22.6 Changes in estimate — 112.9 Amounts paid (22.6) (11.1) Remediation liability at the end of the year $ 101.8 $ 124.4 The reserve balance as of January 2, 2021 includes $23.6 million that is expected to be paid within the next twelve months and is recorded as a current obligation in other accrued liabilities, with the remaining $78.2 million expected to be paid over the course of up to 25 years, recorded in other liabilities. The Company's remediation activity at the Tannery property, House Street site and other relevant disposal sites is ongoing. Although the recent Consent Decree has made near-term costs more clear, it is difficult to estimate the long-term 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. Future 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 The Company has future minimum royalty and advertising obligations due under the terms of certain licenses held by the Company. These minimum future obligations for the fiscal years subsequent to January 2, 2021 are as follows: (In millions) 2021 2022 2023 2024 2025 Thereafter Minimum royalties $ 1.7 $ 1.8 $ — $ — $ — $ — Minimum advertising 3.3 3.4 3.5 3.6 — — 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 $1.9 million, $2.3 million and $2.2 million for fiscal years 2020, 2019 and 2018, 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 $2.5 million, $3.6 million and $3.3 million for fiscal years 2020, 2019 and 2018, respectively.

Business Segments (Notes)

Business Segments (Notes)	12 Months Ended
	Jan. 02, 2021
Segment Reporting [Abstract]
Business Segments	BUSINESS SEGMENTS The Company’s portfolio of brands is organized into the following two operating segments, which the Company has determined to be reportable segments. • Wolverine Michigan Group , consisting of Merrell ® footwear and apparel, Cat ® footwear, Wolverine ® footwear and apparel, Chaco ® footwear, Hush Puppies ® footwear and apparel, Bates ® uniform footwear, Harley-Davidson ® footwear and Hytest ® safety footwear; and • Wolverine Boston Group , consisting of Sperry ® footwear, Saucony ® footwear and apparel, Keds ® footwear and the Kids' footwear business, which includes the Stride Rite ® licensed business, as well as Kids' footwear offerings from Saucony ® , Sperry ® , Keds ® , Merrell ® , Hush Puppies ® and Cat ® . The reportable segments are engaged in designing, manufacturing, sourcing, marketing, licensing and distributing branded footwear, apparel and accessories. Revenue for the reportable segments includes revenue from the sale of branded footwear, apparel and accessories to third-party customers; revenue from third-party distributors, licensees and joint ventures; 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 leather marketing operations, sourcing operations and multi-branded consumer-direct retail stores. The Corporate category consists of unallocated corporate expenses, such as costs related to the COVID-19 pandemic, impairment of intangible assets and environmental and other related costs. The Company’s reportable segments are determined based on how the Company internally reports and evaluates financial information used to make operating decisions. Company management uses various financial measures to evaluate the performance of the reportable segments. The following is a summary of certain key financial measures for the respective fiscal periods indicated. Fiscal Year (In millions) 2020 2019 2018 Revenue: Wolverine Michigan Group $ 1,051.0 $ 1,299.7 $ 1,272.2 Wolverine Boston Group 696.0 910.9 895.5 Other 44.1 63.1 71.5 Total $ 1,791.1 $ 2,273.7 $ 2,239.2 Operating profit (loss): Wolverine Michigan Group $ 179.9 $ 244.8 $ 257.6 Wolverine Boston Group 88.1 153.8 157.5 Other 1.6 2.9 3.1 Corporate (406.7) (230.5) (166.3) Total $ (137.1) $ 171.0 $ 251.9 Depreciation and amortization expense: Wolverine Michigan Group $ 2.7 $ 2.4 $ 2.7 Wolverine Boston Group 3.4 3.3 3.3 Other 2.0 2.4 3.1 Corporate 24.7 24.6 22.4 Total $ 32.8 $ 32.7 $ 31.5 Capital expenditures: Wolverine Michigan Group $ 0.8 $ 2.2 $ 3.1 Wolverine Boston Group 2.3 5.7 1.2 Other 0.9 2.2 1.8 Corporate 6.3 24.3 15.6 Total $ 10.3 $ 34.4 $ 21.7 (In millions) January 2, December 28, Total assets: Wolverine Michigan Group $ 626.9 $ 773.8 Wolverine Boston Group 1,077.8 1,354.8 Other 31.4 38.4 Corporate 401.3 313.0 Total $ 2,137.4 $ 2,480.0 Goodwill: Wolverine Michigan Group $ 145.4 $ 144.4 Wolverine Boston Group 297.0 294.5 Total $ 442.4 $ 438.9 Geographic dispersion of revenue from external customers, based on shipping destination is as follows: Fiscal Year (In millions) 2020 2019 2018 United States $ 1,234.2 $ 1,507.9 $ 1,505.2 Foreign: Europe, Middle East and Africa 279.8 343.1 325.7 Asia Pacific 120.3 193.7 186.0 Canada 88.9 117.9 116.7 Latin America 67.9 111.1 105.6 Total from foreign territories 556.9 765.8 734.0 Total revenue $ 1,791.1 $ 2,273.7 $ 2,239.2 The location of the Company’s tangible long-lived assets, which comprises property, plant and equipment and lease right-of-use assets, is as follows: (In millions) January 2, December 28, December 29, United States $ 222.2 $ 247.2 $ 117.1 Foreign countries 44.9 54.6 13.8 Total $ 267.1 $ 301.8 $ 130.9 The Company does not believe that it is dependent upon any single customer because no customer accounts for more than 10% of consolidated revenue in any year. During fiscal 2020, the Company sourced 100% of its footwear products and apparel and accessories from third-party suppliers, located primarily in the Asia Pacific region. While changes in suppliers could cause delays in manufacturing and a possible loss of sales, management believes that other suppliers could provide similar products on comparable terms.

Business Acquisitions (Notes)

Business Acquisitions (Notes)	12 Months Ended
	Jan. 02, 2021
Business Combinations [Abstract]
Business Acquisitions	BUSINESS ACQUISITIONS On April 30, 2019, the Company acquired assets and assumed liabilities from Sportlab S.R.L. (“Sportlab”), the distributor of Saucony ® footwear in Italy. Total purchase consideration of $25.2 million includes cash paid, extinguishment of Sportlab’s accounts payable balance that was due to the Company at the time of acquisition and contingent consideration. The contingent consideration was based on sales activity from the date of the acquisition through the end of fiscal 2019 and was paid in the first quarter of fiscal 2020. The detailed amounts of each component of the purchase consideration are as follows: (In millions) Purchase Consideration Cash paid $ 15.1 Extinguishment of Sportlab’s accounts payable balance 4.6 Contingent consideration 5.5 Total purchase consideration $ 25.2 The Company accounted for the acquisition under the provisions of FASB ASC Topic 805, Business Combinations . The related assets acquired and liabilities assumed were recorded at fair value on the acquisition date. The operating results for the acquired Saucony ® distribution business are included in the Company’s consolidated results of operations beginning April 30, 2019, and are included in the Wolverine Boston Group reporting group for segment reporting purposes. The final allocation of the purchase price as of December 28, 2019 was: (In millions) Final Valuation Accounts receivable $ 1.8 Inventories 6.2 Goodwill 12.0 Amortizable intangibles 12.9 Total assets acquired 32.9 Deferred income taxes 3.2 Other liabilities 4.5 Total liabilities assumed 7.7 Net assets acquired $ 25.2 The excess of the purchase price over the fair value of the net assets acquired, amounting to $12.0 million, was recorded as goodwill in the consolidated balance sheet and was assigned to the Wolverine Boston Group reportable segment. The goodwill that was recognized is attributable to the efficiencies to be gained by integrating operations with the Saucony ® distribution business purchased from Sportlab. Other intangible assets acquired include order backlog, valued at $1.7 million, and customer relationship assets, valued at $11.2 million, which had estimated useful lives at the acquisition date of 7 months and 14 years, respectively.

Quarterly Results of Operations

Quarterly Results of Operations (Unaudited) (Notes)	12 Months Ended
	Jan. 02, 2021
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations (Unaudited)	QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) The aggregate quarterly earnings per share amounts disclosed in the table below may not equal the annual per share amounts due to rounding and the fact that results for each quarter are calculated independently of the full fiscal year. The Company’s unaudited quarterly results of operations are as follows: Fiscal 2020 Quarters Ended (In millions, except per share data) March 28, 2020 June 27, 2020 September 26, 2020 January 2, 2021 Revenue $ 439.3 $ 349.1 $ 493.1 $ 509.6 Gross profit 181.8 147.2 202.0 204.6 Net earnings (loss) attributable to Wolverine World Wide, Inc. 13.0 (1.6) 22.4 (170.7) Net earnings (loss) per share: Basic $ 0.16 $ (0.02) $ 0.27 $ (2.10) Diluted 0.16 (0.02) 0.27 (2.10) Fiscal 2019 Quarters Ended (In millions, except per share data) March 30, 2019 June 29, 2019 September 28, 2019 December 28, 2019 Revenue $ 523.4 $ 568.6 $ 574.3 $ 607.4 Gross profit 220.2 230.4 243.3 229.9 Net earnings (loss) attributable to Wolverine World Wide, Inc. 40.5 40.2 48.7 (0.9) Net earnings (loss) per share: Basic $ 0.44 $ 0.45 $ 0.57 $ (0.01) Diluted 0.43 0.45 0.57 (0.01)

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts (Notes)	12 Months Ended
	Jan. 02, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	Schedule II - Valuation and Qualifying Accounts Wolverine World Wide, Inc. and Subsidiaries (In millions) Balance at Deductions Balance at Fiscal Year Ended January 2, 2021 Deducted from asset accounts: Allowance for credit losses $ 6.0 $ 9.7 $ 9.0 (A) $ 6.7 Allowance for sales returns 11.4 41.5 37.3 (B) 15.6 Allowance for cash discounts and customer markdowns 9.3 19.8 17.9 (C) 11.2 Inventory valuation allowances 7.3 9.3 7.5 (D) 9.1 Total $ 34.0 $ 80.3 $ 71.7 $ 42.6 Fiscal Year Ended December 28, 2019 Deducted from asset accounts: Allowance for credit losses (1) $ 4.0 $ 5.1 $ 3.1 (A) $ 6.0 Allowance for sales returns 13.6 50.2 52.4 (B) 11.4 Allowance for cash discounts and customer markdowns (1) 9.0 15.3 15.0 (C) 9.3 Inventory valuation allowances 8.3 6.9 7.9 (D) 7.3 Total $ 34.9 $ 77.5 $ 78.4 $ 34.0 Fiscal Year Ended December 29, 2018 Deducted from asset accounts: Allowance for credit losses (1) $ 6.8 $ 2.8 $ 5.6 (A) $ 4.0 Allowance for sales returns 12.6 53.8 52.8 (B) 13.6 Allowance for cash discounts and customer markdowns (1) 12.1 17.9 21.0 (C) 9.0 Inventory valuation allowances 11.5 6.1 9.3 (D) 8.3 Total $ 43.0 $ 80.6 $ 88.7 $ 34.9 (1) Prior year amounts were reclassified between lines within the schedule to conform with current year presentation. (A) Accounts charged off, net of recoveries. (B) Actual customer returns. (C) Discounts given to customers. (D) Adjustment upon disposal of related inventories.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Jan. 02, 2021
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; kids’ 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 ® . The Company’s products are marketed worldwide through owned operations, through licensing and distribution arrangements with third parties, and through joint ventures. The Company also operates retail stores and eCommerce sites to market both its own brands and branded footwear and apparel from other manufacturers, and has a leathers division that markets Wolverine Performance Leathers™ .
Principles of Consolidation	Principles of Consolidation and Basis of Presentation The consolidated financial statements include the accounts of Wolverine World Wide, Inc. and its majority-owned subsidiaries (collectively, the “Company”). All intercompany accounts and transactions have been eliminated in consolidation.
Fiscal Year	Fiscal YearThe Company’s fiscal year is the 52- or 53-week period that ends on the Saturday nearest to December 31. Fiscal year 2020 had 53 weeks, and fiscal years 2019 and 2018 each had 52 weeks.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition The Company recognizes revenue in accordance with FASB ASC Topic 606, Revenue from Contracts with Customers . 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. Control of the Company's goods and services, and associated 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 shipment or delivery of branded products 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 shipment of goods, or point of purchase for retail store sales, 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 having the risks and rewards of the goods. Revenue is recognized net of any taxes collected from customers, which are subsequently remitted to governmental authorities. Shipping and handling costs that are charged to and reimbursed by a customer are recognized as revenue, while the related expenses incurred by the Company are recorded as cost of goods sold. The Company has elected the practical expedient to treat shipping and handling activities that occur after control of the goods transfers to the customer as fulfillment activities. Payment terms for the Company's revenue vary by sales channel. Standard credit terms apply to the Company's wholesale receivables, while payment is rendered at the time of sale within the consumer-direct channel. The timing of revenue recognition, billings and cash collections results in billed accounts receivable (contract assets), and customer advances (contract
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.
Advertising Costs	Advertising Costs Advertising costs are expensed as incurred, except for certain materials that are expensed the first time that the advertising takes place. Advertising expenses were $135.6 million, $119.4 million and $120.8 million for fiscal years 2020, 2019 and 2018, respectively. Prepaid advertising totaled $1.2 million and $3.7 million as of January 2, 2021 and December 28, 2019, respectively.
Cash Equivalents	Cash Equivalents Cash equivalents include highly liquid investments with an original maturity of three months or less. Cash equivalents are stated at cost, which approximates fair value.
Allowance for Uncollectible Accounts	Allowance for Credit Losses The Company maintains an allowance for credit losses on accounts receivable that represents estimated losses resulting from its customers’ failure to make required payments. Company management evaluates the allowance for credit losses based on a review of current customer status and historical collection experience along with current and reasonable supportable forecasts of future economic conditions.
Inventories	Inventories The Company values its inventory at the lower of cost or net realizable value. Cost is determined by the LIFO method for certain domestic finished goods inventories. Cost is determined using the FIFO method for all raw materials, work-in-process and finished goods inventories in foreign countries and certain domestic finished goods inventories. The average cost of inventory is used for finished goods inventories of the Company’s consumer-direct business. The Company has applied these inventory cost valuation methods consistently from year to year. The Company reduces the carrying value of its inventories to the lower of cost or net realizable value for excess or obsolete inventories based upon assumptions about future demand and market conditions. If the Company were to determine that the estimated realizable value of its inventory is less than the carrying value of such inventory, the Company would provide a reserve for such difference as a charge to cost of sales. If actual market conditions are different from those projected, adjustments to those inventory reserves may be required. The adjustments would increase or decrease the Company’s cost of sales and net income in the period in which they were realized or recorded. Inventory quantities are verified at various times throughout the year by performing physical inventory counts and subsequently comparing those results to perpetual inventory balances. If the Company determines that adjustments to the inventory quantities are appropriate, an adjustment to the Company’s cost of goods sold and inventory is recorded in the period in which such determination was made.
Property, Plant and Equipment	Property, Plant and EquipmentProperty, plant and equipment are stated on the basis of cost and include expenditures for buildings, leasehold improvements, furniture and fixtures, material handling systems, equipment and computer hardware and software. Normal repairs and maintenance are expensed as incurred. Depreciation of property, plant and equipment is computed using the straight-line method. The depreciable lives range from 14 to 20 years for buildings, from 5 to 15 years for leasehold improvements, from 3 to 10 years for furniture, fixtures and equipment and from 3 to 5 years for software.
Deferred Financing Costs	Deferred Financing CostsDeferred financing costs represent commitment fees, legal and other third-party costs associated with obtaining commitments for financing that result in a closing of such financings for the Company. Deferred financing costs related to fixed term borrowings are recorded as a reduction of long-term debt in the consolidated balance sheet. Deferred financing costs related to revolving credit facilities are recorded as an other noncurrent asset in the consolidated balance sheet. These costs are amortized into earnings through interest expense over the terms of the respective agreements.
Goodwill and Other Intangibles	Goodwill and Other Intangibles Goodwill represents the excess of the purchase price over the fair value of net tangible and identifiable intangible assets of acquired businesses. Indefinite-lived intangibles include trademarks and trade names. Goodwill and intangible assets deemed to have indefinite lives are not amortized, but are subject to impairment tests at least annually. The Company reviews the carrying amounts of goodwill and indefinite-lived intangible assets by reporting unit at least annually, or when indicators of impairment are present, to determine if such assets may be impaired. The Company includes assumptions about expected future operating performance as part of a discounted cash flow analysis to estimate fair value. If the carrying value of these assets is not recoverable, based on the discounted cash flow analysis, management compares the fair value of the assets to the carrying value. Goodwill and indefinite-lived intangibles are considered impaired if the recorded value exceeds the fair value. The Company may first assess qualitative factors to determine whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying value. The Company would not be required to quantitatively determine the fair value of the indefinite-lived intangible unless the Company determines, based on the qualitative assessment, that it is more likely than not that its fair value is less than the carrying value. Future cash flows of the individual indefinite-lived intangible assets are used to measure their fair value after consideration by management of certain assumptions, such as forecasted growth rates and cost of capital, which are derived from internal projections and operating plans. The Company performs its annual testing for goodwill and indefinite-lived intangible asset impairment at the beginning of the fourth quarter of the fiscal year. See Note 4 for information related to the results of the Company's annual test.
Impairment of Long-Lived Assets	Impairment of Long-Lived AssetsThe Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or an asset group may not be recoverable. Each impairment test is based on a comparison of the carrying amount of the asset or asset group to the future undiscounted net cash flows expected to be generated by the asset or asset group. If such assets are considered to be impaired, the impairment amount to be recognized is the amount by which the carrying value of the assets exceeds their fair value.
Environmental Cost, Expense Policy [Policy Text Block]	Environmental The Company establishes a reserve for estimated environmental remediation costs based upon the evaluation of currently-available facts with respect to each individual affected site. The costs are recorded on an undiscounted basis when they are probable and reasonably estimable, generally no later than the completion of feasibility studies, the Company’s commitment to a plan of action, or approval by regulatory agencies. 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 records adjustments to the estimated costs if there are changes in the scope of the required remediation activity, extent of contamination, governmental regulations or remediation technologies. Environmental costs relating to existing conditions caused by past operations that do not contribute to current or future revenues are expensed as incurred.
Retirement Benefits	Retirement Benefits The determination of the obligation and expense for retirement benefits is dependent on the selection of certain actuarial assumptions used in calculating such amounts. These assumptions include, among others, the discount rate, expected long-term rate of return on plan assets, mortality rates and rates of increase in compensation. These assumptions are reviewed with the Company’s actuaries and updated annually based on relevant external and internal factors and information, including, but not limited to, long-term expected asset returns, rates of termination, regulatory requirements and plan changes. See Note 13 for additional information. The Company has elected to measure its defined benefit plan assets and obligations as of December 31 of each year, regardless of the Company's actual fiscal year end date, which is the Saturday nearest to December 31.
Income Taxes	Income Taxes The provision for income taxes is based on the geographic dispersion of the earnings reported in the consolidated financial statements. A deferred income tax asset or liability is determined by applying currently-enacted tax laws and rates to the cumulative temporary differences between the carrying values of assets and liabilities for financial statement and income tax purposes. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in earnings in the period that includes the enactment date. A valuation allowance is recorded to reduce deferred tax assets to the amount that is more likely than not to be realized. In the event the Company determines it is more likely than not that the deferred tax assets will not be realized in the future, the valuation allowance adjustment to the deferred tax assets will be charged to earnings in the period in which the Company makes such a determination. The Company records an increase in liabilities for income tax accruals associated with tax benefits claimed on tax returns but not recognized for financial statement purposes (unrecognized tax benefits). In determining whether an uncertain tax position exists, the Company determines, based solely on its technical merits, whether the tax position is more likely than not to be sustained upon examination, and if so, a tax benef it is measured on a cumulative probability basis that is more likely than not to be realized upon the ultimate settlement. T he Company recognizes interest and penalties related to unrecognized tax benefits through interest expense and income tax expense, respectively.
Foreign Currency	Foreign Currency For most of the Company’s international subsidiaries, the local currency is the functional currency. Assets and liabilities of these subsidiaries are translated into U.S. dollars at the year-end exchange rate. Operating statement amounts are translated at average exchange rates for each period. The cumulative translation adjustments resulting from changes in exchange rates are included in the consolidated balance sheets as a component of accumulated other comprehensive income (loss) in stockholders’ equity. Transaction gains and losses are included in the consolidated statements of operations and were not material for fiscal years 2020, 2019 and 2018.

Earnings Per Share (Policies)

Earnings Per Share (Policies)	12 Months Ended
	Jan. 02, 2021
Earnings Per Share [Abstract]
Earnings Per Share	The Company calculates earnings per share in accordance with FASB 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, whether paid or unpaid, are participating securities and must be included in the computation of earnings per share pursuant to the two-class method.

Leases (Policies)

Leases (Policies)	12 Months Ended
	Jan. 02, 2021
Leases [Abstract]
Lessee	The Company’s leases consist primarily of corporate offices, retail stores, distribution centers, showrooms, vehicles and office equipment. The Company leases assets in the normal course of business to meet its current and future needs while providing flexibility to its operations. The Company enters into contracts with third parties to lease specifically identified assets. Most of the Company’s leases have contractually specified renewal periods. Most retail store leases have early termination clauses that the Company can elect if stipulated sales amounts are not achieved. The Company determines the lease term for each lease based on the terms of each contract and factors in renewal and early termination options if such options are reasonably certain to be exercised. In response to the COVID-19 pandemic and the effect the pandemic had on the Company’s leased properties, the Company has been actively seeking rent relief from its landlords. The Company considered the FASB staff guidance issued in April 2020 in relation to accounting for lease concessions made in connection with the effects of the COVID-19 pandemic and elected to apply the temporary practical expedient to account for rent deferrals and abatements as though the enforceable rights and obligations existed in each contract. Depending on the timing of the future payments, amounts deferred and payable in future periods have been included in “Other accrued liabilities” and “Other liabilities” on the Company’s condensed consolidated balance sheets. The Company continued to recognize lease expense on a straight-line basis for its leases over the related lease terms.
Separation of Lease and Nonlease Components [Policy Text Block]	Under FASB ASC Topic 842, Leases

Financial Instruments and Ris_2

Financial Instruments and Risk Management (Policies)	12 Months Ended
	Jan. 02, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging	The Company follows ASC 815, which requires that all derivative instruments be recorded on the consolidated 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 designated as cash flow hedges 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 extended out to a maximum of 538 days and 545 days as of January 2, 2021 and December 28, 2019, respectively. When foreign exchange contracts are determined not to be highly effective or are terminated before their contractual termination dates, the Company would remove the hedge designation from those contracts and reclassify into earnings the unrealized gains or losses that would otherwise be included in accumulated other comprehensive income (loss) within stockholders’ equity. During fiscal 2020 and 2019, the Company reclassified $0.6 million and $1.2 million respectively, to other income for foreign currency derivatives that were no longer deemed highly effective.

Fair Value Measurements (Polici

Fair Value Measurements (Policies)	12 Months Ended
	Jan. 02, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurement, Policy [Policy Text Block]	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.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Jan. 02, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The following table sets forth the computation of basic and diluted earnings per share: Fiscal Year (In millions, except per share data) 2020 2019 2018 Numerator: Net earnings (loss) attributable to Wolverine World Wide, Inc. $ (136.9) $ 128.5 $ 200.1 Less: net earnings attributed to participating share-based awards (0.8) (2.6) (7.5) Net earnings (loss) used to calculate basic earnings per share (137.7) 125.9 192.6 Adjustment for earnings reallocated to participating share-based awards — 0.1 1.8 Net earnings (loss) used to calculate diluted earnings per share $ (137.7) $ 126.0 $ 194.4 Denominator: Weighted average shares outstanding 81.8 85.7 94.8 Adjustment for unvested restricted common stock (0.8) (0.6) (1.8) Shares used to calculate basic earnings per share 81.0 85.1 93.0 Effect of dilutive share-based awards — 2.1 2.0 Shares used to calculate diluted earnings per share 81.0 87.2 95.0 Net earnings (loss) per share: Basic $ (1.70) $ 1.48 $ 2.07 Diluted $ (1.70) $ 1.44 $ 2.05

Goodwill and Other Intangible_2

Goodwill and Other Intangibles (Tables)	12 Months Ended
	Jan. 02, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Carrying Amount of Goodwill and Other Non-Amortizable Intangibles	The changes in the carrying amount of goodwill are as follows: Fiscal Year (In millions) 2020 2019 Goodwill balance at beginning of the year $ 438.9 $ 424.4 Acquisition of a business (see Note 19) — 12.0 Foreign currency translation effects 3.5 2.5 Goodwill balance at end of the year $ 442.4 $ 438.9
Schedule of amortizable intangible assets [Table Text Block]	The combined gross carrying values and accumulated amortization for these amortizable intangibles are as follows: January 2, 2021 (In millions) Gross carrying Accumulated Net Average remaining life (years) Customer relationships $ 114.5 $ 44.9 $ 69.6 12 Other 18.7 15.3 3.4 3 Total $ 133.2 $ 60.2 $ 73.0 December 28, 2019 (In millions) Gross carrying Accumulated Net Average remaining life (years) Customer relationships $ 113.3 $ 38.8 $ 74.5 13 Other 17.3 14.0 3.3 3 Total $ 130.6 $ 52.8 $ 77.8
Estimated Aggregate Future Amortization Expense for Intangibles Assets	Estimated aggregate amortization expense for such intangibles for the fiscal years subsequent to January 2, 2021 is as follows: (In millions) 2021 2022 2023 2024 2025 Amortization expense $ 7.1 $ 6.8 $ 6.6 $ 6.3 $ 6.0

Accounts Receivable (Tables)

Accounts Receivable (Tables)	12 Months Ended
	Jan. 02, 2021
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. Fiscal Year (In millions) 2020 2019 2018 Accounts receivable sold $ 14.1 $ 42.7 $ 264.3 Fees charged 0.1 0.2 1.3

Revenue From Contracts With C_2

Revenue From Contracts With Customers (Tables)	12 Months Ended
	Jan. 02, 2021
Revenue From Contracts With Customers [Abstract]
Disaggregation of Revenue [Table Text Block]	The wholesale channel includes royalty revenues, which operates in a similar manner as other wholesale revenues due to similar oversight and management, customer base, the performance obligation (footwear and apparel goods) and point in time completion of the performance obligation. Fiscal Year (in millions) 2020 2019 2018 Wolverine Michigan Group: Wholesale $ 814.2 $ 1,134.9 $ 1,129.2 Consumer-direct 236.8 164.8 143.0 Total 1,051.0 1,299.7 1,272.2 Wolverine Boston Group: Wholesale 508.9 743.4 762.0 Consumer-direct 187.1 167.5 133.5 Total 696.0 910.9 895.5 Other: Wholesale 40.5 57.9 64.1 Consumer-direct 3.6 5.2 7.4 Total 44.1 63.1 71.5 Total revenue $ 1,791.1 $ 2,273.7 $ 2,239.2
Contract with Customer, Asset and Liability [Table Text Block]	The Company’s contract balances are as follows: (In millions) January 2, December 28, Product returns reserve $ 15.6 $ 11.4 Customer markdowns reserve 3.7 4.4 Other sales incentives reserve 6.0 2.3 Customer rebates liability 13.4 12.0 Customer advances liability 8.2 7.2

Debt (Tables)

Debt (Tables)	12 Months Ended
	Jan. 02, 2021
Debt Disclosure [Abstract]
Schedule of Borrowings	Total debt consists of the following obligations: (In millions) January 2, December 28, Term Loan A, due December 6, 2023 $ 180.0 $ 192.5 Senior Notes, 5.000% interest, due September 1, 2026 250.0 250.0 Senior Notes, 6.375% interest, due May 15, 2025 300.0 — Borrowings under revolving credit agreements — 360.0 Unamortized deferred financing costs (7.5) (4.1) Total debt $ 722.5 $ 798.4
Schedule of Annual Maturities of Long-Term Debt	Annual maturities of debt for the fiscal years subsequent to January 2, 2021 are as follows: (In millions) 2021 2022 2023 2024 2025 Thereafter Annual maturities of debt $ 10.0 $ 10.0 $ 160.0 $ — $ 300.0 $ 250.0

Property, Plant and Equipment_2

Property, Plant and Equipment (Tables)	12 Months Ended
	Jan. 02, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant and equipment consisted of the following: (In millions) January 2, December 28, 2019 Land $ 3.9 $ 3.9 Buildings and leasehold improvements 119.6 123.2 Furniture, fixtures and equipment 135.1 136.8 Software 63.2 61.1 Gross cost 321.8 325.0 Less: accumulated depreciation 197.2 184.0 Property, plant and equipment, net $ 124.6 $ 141.0

Leases (Tables)

Leases (Tables)	12 Months Ended
	Jan. 02, 2021
Leases [Abstract]
Lease, Cost [Table Text Block]	The following is a summary of the Company’s lease cost. Fiscal Year (In millions) 2020 2019 Operating lease cost $ 34.1 $ 32.6 Variable lease cost 12.3 14.5 Short-term lease cost 1.2 1.2 Sublease income (4.8) (4.0) Total lease cost $ 42.8 $ 44.3
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Future undiscounted cash flows for operating leases for the fiscal periods subsequent to January 2, 2021 are as follows: (In millions) Operating Leases 2021 $ 33.9 2022 29.5 2023 21.7 2024 18.3 2025 17.5 Thereafter 90.2 Total future payments 211.1 Less: imputed interest 46.8 Recognized lease liability $ 164.3

Financial Instruments and Ris_3

Financial Instruments and Risk Management (Tables)	12 Months Ended
	Jan. 02, 2021
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) January 2, December 28, 2019 Foreign exchange contracts: Hedge contracts $ 250.7 $ 246.3 Non-hedge contracts — 7.3 Interest rate swap — 355.8 Cross currency swap 79.8 79.8
Schedule of Derivative Assets at Fair Value [Table Text Block]	The recorded fair values of the Company’s derivative instruments are as follows: (In millions) January 2, December 28, 2019 Financial assets: Foreign exchange contracts - hedge $ — $ 2.3 Financial liabilities: Foreign exchange contracts - hedge $ (8.8) $ (1.8) Interest rate swap — (1.8) Cross currency swap (10.8) (3.0)

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Jan. 02, 2021
Share-based Payment Arrangement [Abstract]
Summary of Unvested Restricted Shares Issued Under Stock Award Plans	A summary of the unvested Restricted Awards and Performance Awards is as follows: Restricted Weighted- Performance Weighted- Unvested at December 30, 2017 2,025,072 $ 21.70 1,690,668 $ 21.54 Granted 609,276 31.81 384,657 35.10 Vested (560,263) 22.93 (229,023) 26.64 Forfeited (153,712) 23.81 (215,284) 26.18 Unvested at December 29, 2018 1,920,373 $ 24.38 1,631,018 $ 23.42 Granted 554,092 34.73 370,830 37.10 Vested (681,938) 24.63 (654,021) 17.46 Forfeited (173,611) 28.47 (220,725) 19.74 Unvested at December 28, 2019 1,618,916 $ 27.36 1,127,102 $ 31.94 Granted 1,416,117 22.59 455,207 34.00 Vested (1,122,811) 22.07 (451,334) 23.51 Forfeited (268,205) 29.67 (125,653) 35.91 Unvested at January 2, 2021 1,644,017 $ 26.39 1,005,322 $ 35.25
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	The estimated weighted-average fair value for each option granted was $8.20, $9.07 and $8.20 per share for fiscal years 2020, 2019 and 2018, respectively, with the following weighted-average assumptions. Fiscal Year 2020 2019 2018 Expected market price volatility (1) 31.2 % 29.6 % 29.6 % Risk-free interest rate (2) 1.5 % 2.5 % 2.5 % Dividend yield (3) 1.2 % 1.0 % 0.8 % Expected term (4) 4 years 4 years 4 years (1) Based on historical volatility of the Company’s common stock. The expected volatility is based on the daily percentage change in the price of the stock over the four years prior to the grant. (2) Represents the U.S. Treasury yield curve in effect for the expected term of the option at the time of grant. (3) Represents the Company’s estimated cash dividend yield for the expected term. (4) Represents the period of time that options granted are expected to be outstanding. As part of the determination of the expected term, the Company concluded that all employee groups exhibit similar exercise and post-vesting termination behavior.
Summary of Transactions Under Stock Option Plans	A summary of the stock option transactions is as follows: Shares Under Option Weighted-Average Exercise Price Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (In millions) Outstanding at December 30, 2017 6,089,664 $ 20.05 5.8 $ 72.1 Granted 28,171 31.85 Exercised (1,359,387) 17.69 Canceled (56,446) 17.12 Outstanding at December 29, 2018 4,702,002 $ 20.83 5.2 $ 54.5 Granted 25,471 34.81 Exercised (681,389) 17.87 Canceled (12,977) 23.97 Outstanding at December 28, 2019 4,033,107 $ 21.41 4.4 $ 49.8 Granted 28,171 32.85 Exercised (788,883) 18.39 Canceled (12,990) 25.39 Outstanding at January 2, 2021 3,259,405 $ 22.22 3.9 $ 29.7 Unvested at January 2, 2021 (54,541) Exercisable at January 2, 2021 3,204,864 $ 22.03 3.8 $ 29.7

Retirement Plans (Tables)

Retirement Plans (Tables)	12 Months Ended
	Jan. 02, 2021
Retirement Benefits [Abstract]
Changes in Company's Assets and Related Obligations for its Pension Plans	The following summarizes the status of and changes in the Company’s assets and related obligations for its pension plans (which include the Company’s defined benefit pension plans and the SERP) for the fiscal years 2020 and 2019: Fiscal Year (In millions) 2020 2019 Change in projected benefit obligations: Projected benefit obligations at beginning of the year $ 401.0 $ 348.8 Service cost pertaining to benefits earned during the year 6.4 5.5 Interest cost on projected benefit obligations 14.2 15.2 Actuarial losses 48.1 45.4 Benefits paid to plan participants (13.9) (13.9) Projected benefit obligations at end of the year $ 455.8 $ 401.0 Change in fair value of pension assets: Fair value of pension assets at beginning of the year $ 287.6 $ 254.4 Actual return on plan assets 28.8 44.7 Company contributions - SERP 2.5 2.4 Benefits paid to plan participants (13.9) (13.9) Fair value of pension assets at end of the year $ 305.0 $ 287.6 Funded status $ (150.8) $ (113.4) Amounts recognized in the consolidated balance sheets: Current liabilities $ (3.8) $ (3.7) Noncurrent liabilities (147.0) (109.7) Net amount recognized $ (150.8) $ (113.4) Funded status of pension plans and SERP (supplemental): Funded status of qualified defined benefit plans and SERP $ (150.8) $ (113.4) Nonqualified trust assets (cash surrender value of life insurance) recorded in other assets and intended to satisfy the projected benefit obligation of unfunded SERP obligations 36.6 59.6 Net funded status of pension plans and SERP (supplemental) $ (114.2) $ (53.8)
Summary of Net Pension and Serp Expense Recognized	The following is a summary of net pension and SERP expense recognized by the Company: Fiscal Year (In millions) 2020 2019 2018 Service cost pertaining to benefits earned during the year $ 6.4 $ 5.5 $ 6.3 Interest cost on projected benefit obligations 14.2 15.2 16.5 Expected return on pension assets (18.7) (17.7) (21.5) Net amortization loss 6.6 2.6 3.3 Settlement loss — — 7.2 Net pension expense $ 8.5 $ 5.6 $ 11.8 Less: SERP expense 5.2 5.4 5.5 Qualified defined benefit pension plans expense $ 3.3 $ 0.2 $ 6.3
Weighted-Average Assumptions used to Determine Benefit Obligations and Net Periodic Benefit Cost	The weighted-average actuarial assumptions used to determine the benefit obligation amounts and the net periodic benefit cost for the Company’s pension and post-retirement plans are as follows: Fiscal Year 2020 2019 Weighted-average assumptions used to determine benefit obligations at fiscal year-end: Discount rate 2.85% 3.60% Rate of compensation increase - pension 4.18% 4.23% Rate of compensation increase - SERP 7.00% 7.00% Weighted average assumptions used to determine net periodic benefit cost for the years ended: Discount rate 3.60% 4.46% Expected long-term rate of return on plan assets 6.75% 6.75% Rate of compensation increase - pension 4.23% 3.82% Rate of compensation increase - SERP 7.00% 7.00%
Pension Plan Assets	The Company’s asset allocations by asset category and fair value measurement are as follows: January 2, 2021 December 28, 2019 (In millions) Total % of Total Total % of Total Equity securities $ 173.3 1 56.8 % $ 162.2 1 56.4 % Fixed income securities 112.7 1 37.0 % 106.2 1 36.9 % Real estate investments 16.7 1 5.5 % 16.9 1 5.9 % Other 2.3 2 0.7 % 2.3 2 0.8 % Fair value of plan assets $ 305.0 100.0 % $ 287.6 100.0 % 1 In accordance with ASC 820, Fair Value Measurement (“ASC 820”), certain investments are measured at fair value using the net asset value per share as a practical expedient. These assets have not been classified in the fair value hierarchy. 2 In accordance with ASC 820, investments have been measured using valuation techniques in which one or more significant inputs are unobservable (Level 3). See Note 16 for additional information.
Expected Benefit Payments	Expected benefit payments for the fiscal years subsequent to January 2, 2021 are as follows: (In millions) 2021 2022 2023 2024 2025 2026-2030 Expected benefit payments $ 16.4 $ 17.1 $ 17.8 $ 18.6 $ 19.3 $ 105.7

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Jan. 02, 2021
Income Tax Disclosure [Abstract]
Geographic Components of Earnings Before Income Taxes	The geographic components of earnings (loss) before income taxes are as follows: Fiscal Year (In millions) 2020 2019 2018 United States $ (218.6) $ 79.3 $ 159.2 Foreign 34.5 66.6 68.2 Earnings (loss) before income taxes $ (184.1) $ 145.9 $ 227.4
Provisions for Income Taxes	The provisions for income tax expense (benefit) consist of the following: Fiscal Year (In millions) 2020 2019 2018 Current expense: Federal $ 0.7 $ 10.6 $ 6.7 State 0.6 0.5 2.4 Foreign 8.3 12.5 10.9 Deferred expense (credit): Federal (51.6) (5.8) 2.1 State (4.4) (2.0) 3.3 Foreign 0.9 1.2 1.7 Income tax provision $ (45.5) $ 17.0 $ 27.1
Reconciliation of Income Tax Expense, Net of Federal Income Tax Rate	A reconciliation of the Company’s total income tax expense and the amount computed by applying the statutory federal income tax rate to earnings before income taxes is as follows: Fiscal Year (In millions) 2020 2019 2018 Income taxes at U.S. statutory rate of 21% $ (38.7) $ 30.6 $ 47.7 State income taxes, net of federal income tax (8.1) 0.5 2.8 Foreign earnings taxed at rates different from the U.S. statutory rate: Hong Kong (3.3) (8.5) (10.8) Other 1.2 2.8 (3.1) Adjustments for uncertain tax positions (1.4) (1.0) (1.4) Change in valuation allowance 4.7 (0.2) 3.3 Change in state tax rates — (1.5) 1.9 Global Intangible Low Tax Income tax 2.5 2.1 3.7 Foreign Derived Intangible Income tax benefit (1.6) (4.4) (6.8) Non-deductible executive compensation 1.6 2.0 0.9 Permanent adjustments related to employee share based compensation (4.6) (5.1) (3.8) Deferred tax on future cash dividends 1.0 0.6 (0.9) Other Permanent adjustments and non-deductible expenses 1.0 (0.6) (6.7) Other 0.2 (0.3) 0.3 Income tax provision $ (45.5) $ 17.0 $ 27.1
Significant Components of Deferred Income Tax Assets and Liabilities	Significant components of the Company’s deferred income tax assets and liabilities are as follows: (In millions) January 2, December 28, Deferred income tax assets: Accounts receivable and inventory valuation allowances $ 3.5 $ 5.7 Deferred compensation accruals 4.5 4.0 Accrued pension expense 33.4 25.3 Stock-based compensation 9.1 14.5 Net operating loss and foreign tax credit carryforwards 21.0 17.6 Book over tax depreciation and amortization 0.4 0.5 Tenant lease expenses 4.4 3.6 Environmental reserve 24.9 15.4 Other 9.1 5.1 Total gross deferred income tax assets 110.3 91.7 Less valuation allowance (22.3) (17.6) Net deferred income tax assets 88.0 74.1 Deferred income tax liabilities: Intangible assets (105.3) (157.5) Tax over book depreciation and amortization (10.7) (8.6) Other (4.3) (4.1) Total deferred income tax liabilities (120.3) (170.2) Net deferred income tax liabilities $ (32.3) $ (96.1)
Unrecognized Tax Benefits	The following table summarizes the activity related to the Company’s unrecognized tax benefits: Fiscal Year (In millions) 2020 2019 Unrecognized tax benefits at beginning of the year $ 6.9 $ 7.9 Increases related to current year tax positions 2.6 1.6 Decreases related to prior year positions (1.3) (1.4) Decreases relating to settlements with taxing authorities (2.4) (1.2) Decrease due to lapse of statute (0.3) — Unrecognized tax benefits at end of the year $ 5.5 $ 6.9

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Jan. 02, 2021
Equity [Abstract]
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	The change in accumulated other comprehensive income (loss) during fiscal years 2020 and 2019 is as follows: (In millions) Foreign Derivatives Pension Total Balance at December 29, 2018 $ (53.0) $ 0.9 $ (36.2) $ (88.3) Other comprehensive income (loss) before reclassifications (1) 5.4 0.9 (14.6) (8.3) Amounts reclassified from accumulated other comprehensive income (loss) — (9.8) (2) 2.6 (3) (7.2) Income tax (expense) benefit — 2.2 (0.5) 1.7 Net reclassifications — (7.6) 2.1 (5.5) Net current-period other comprehensive income (loss) (1) 5.4 (6.7) (12.5) (13.8) Balance at December 28, 2019 $ (47.6) $ (5.8) $ (48.7) $ (102.1) Other comprehensive income (loss) before reclassifications (1) 10.8 (17.6) (30.0) (36.8) Amounts reclassified from accumulated other comprehensive income (loss) — 3.5 (2) 6.6 (3) 10.1 Income tax (expense) benefit — (0.4) (1.4) (1.8) Net reclassifications — 3.1 5.2 8.3 Net current-period other comprehensive income (loss) (1) 10.8 (14.5) (24.8) (28.5) Balance at January 2, 2021 $ (36.8) $ (20.3) $ (73.5) $ (130.6)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Jan. 02, 2021
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The following table sets forth financial assets and liabilities measured at fair value in the consolidated 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) January 2, 2021 December 28, 2019 Financial assets: Derivatives $ — $ 2.3 Financial liabilities: Derivatives $ (19.6) $ (6.6)
Fair Value, by Balance Sheet Grouping [Table Text Block]	The carrying value and the fair value of the Company’s debt are as follows: (In millions) January 2, 2021 December 28, 2019 Carrying value $ 722.5 $ 798.4 Fair value 765.4 817.6

Litigation and Contingencies (T

Litigation and Contingencies (Tables)	12 Months Ended
	Jan. 02, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Environmental Loss Contingencies by Site [Table Text Block]	The following is a summary of the activity with respect to the environmental remediation reserve established by the Company: Fiscal Year (In millions) 2020 2019 Remediation liability at beginning of the year $ 124.4 $ 22.6 Changes in estimate — 112.9 Amounts paid (22.6) (11.1) Remediation liability at the end of the year $ 101.8 $ 124.4
Minimum Royalty and Advertising Obligations Due Under Terms of Certain Licenses Held by Company	These minimum future obligations for the fiscal years subsequent to January 2, 2021 are as follows: (In millions) 2021 2022 2023 2024 2025 Thereafter Minimum royalties $ 1.7 $ 1.8 $ — $ — $ — $ — Minimum advertising 3.3 3.4 3.5 3.6 — —

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Jan. 02, 2021
Segment Reporting [Abstract]
Business Segment Information	The following is a summary of certain key financial measures for the respective fiscal periods indicated. Fiscal Year (In millions) 2020 2019 2018 Revenue: Wolverine Michigan Group $ 1,051.0 $ 1,299.7 $ 1,272.2 Wolverine Boston Group 696.0 910.9 895.5 Other 44.1 63.1 71.5 Total $ 1,791.1 $ 2,273.7 $ 2,239.2 Operating profit (loss): Wolverine Michigan Group $ 179.9 $ 244.8 $ 257.6 Wolverine Boston Group 88.1 153.8 157.5 Other 1.6 2.9 3.1 Corporate (406.7) (230.5) (166.3) Total $ (137.1) $ 171.0 $ 251.9 Depreciation and amortization expense: Wolverine Michigan Group $ 2.7 $ 2.4 $ 2.7 Wolverine Boston Group 3.4 3.3 3.3 Other 2.0 2.4 3.1 Corporate 24.7 24.6 22.4 Total $ 32.8 $ 32.7 $ 31.5 Capital expenditures: Wolverine Michigan Group $ 0.8 $ 2.2 $ 3.1 Wolverine Boston Group 2.3 5.7 1.2 Other 0.9 2.2 1.8 Corporate 6.3 24.3 15.6 Total $ 10.3 $ 34.4 $ 21.7 (In millions) January 2, December 28, Total assets: Wolverine Michigan Group $ 626.9 $ 773.8 Wolverine Boston Group 1,077.8 1,354.8 Other 31.4 38.4 Corporate 401.3 313.0 Total $ 2,137.4 $ 2,480.0 Goodwill: Wolverine Michigan Group $ 145.4 $ 144.4 Wolverine Boston Group 297.0 294.5 Total $ 442.4 $ 438.9
Revenue by Geographic Region	Geographic dispersion of revenue from external customers, based on shipping destination is as follows: Fiscal Year (In millions) 2020 2019 2018 United States $ 1,234.2 $ 1,507.9 $ 1,505.2 Foreign: Europe, Middle East and Africa 279.8 343.1 325.7 Asia Pacific 120.3 193.7 186.0 Canada 88.9 117.9 116.7 Latin America 67.9 111.1 105.6 Total from foreign territories 556.9 765.8 734.0 Total revenue $ 1,791.1 $ 2,273.7 $ 2,239.2
Geographic Location of Long-Lived Assets	The location of the Company’s tangible long-lived assets, which comprises property, plant and equipment and lease right-of-use assets, is as follows: (In millions) January 2, December 28, December 29, United States $ 222.2 $ 247.2 $ 117.1 Foreign countries 44.9 54.6 13.8 Total $ 267.1 $ 301.8 $ 130.9

Business Acquisitions Business

Business Acquisitions Business Acquisition (Tables)	12 Months Ended
	Jan. 02, 2021
Business Combinations [Abstract]
Schedule of Consideration Transferred [Table Text Block]	The detailed amounts of each component of the purchase consideration are as follows: (In millions) Purchase Consideration Cash paid $ 15.1 Extinguishment of Sportlab’s accounts payable balance 4.6 Contingent consideration 5.5 Total purchase consideration $ 25.2
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The final allocation of the purchase price as of December 28, 2019 was: (In millions) Final Valuation Accounts receivable $ 1.8 Inventories 6.2 Goodwill 12.0 Amortizable intangibles 12.9 Total assets acquired 32.9 Deferred income taxes 3.2 Other liabilities 4.5 Total liabilities assumed 7.7 Net assets acquired $ 25.2

Quarterly Results of Operatio_2

Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Jan. 02, 2021
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations	The Company’s unaudited quarterly results of operations are as follows: Fiscal 2020 Quarters Ended (In millions, except per share data) March 28, 2020 June 27, 2020 September 26, 2020 January 2, 2021 Revenue $ 439.3 $ 349.1 $ 493.1 $ 509.6 Gross profit 181.8 147.2 202.0 204.6 Net earnings (loss) attributable to Wolverine World Wide, Inc. 13.0 (1.6) 22.4 (170.7) Net earnings (loss) per share: Basic $ 0.16 $ (0.02) $ 0.27 $ (2.10) Diluted 0.16 (0.02) 0.27 (2.10) Fiscal 2019 Quarters Ended (In millions, except per share data) March 30, 2019 June 29, 2019 September 28, 2019 December 28, 2019 Revenue $ 523.4 $ 568.6 $ 574.3 $ 607.4 Gross profit 220.2 230.4 243.3 229.9 Net earnings (loss) attributable to Wolverine World Wide, Inc. 40.5 40.2 48.7 (0.9) Net earnings (loss) per share: Basic $ 0.44 $ 0.45 $ 0.57 $ (0.01) Diluted 0.43 0.45 0.57 (0.01)

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Jan. 02, 2021USD ($)	Dec. 28, 2019USD ($)	Dec. 29, 2018USD ($)
Accounting Policies [Line Items]
Weeks in fiscal year	53	52	52
Advertising expense	$ 135.6	$ 119.4	$ 120.8
Prepaid advertising	$ 1.2	$ 3.7
Minimum [Member] | Building [Member]
Accounting Policies [Line Items]
Depreciable life	14 years
Minimum [Member] | Leasehold Improvements [Member]
Accounting Policies [Line Items]
Depreciable life	5 years
Minimum [Member] | Furniture Fixture Equipment [Member]
Accounting Policies [Line Items]
Depreciable life	3 years
Minimum [Member] | Software [Member]
Accounting Policies [Line Items]
Depreciable life	3 years
Maximum [Member] | Building [Member]
Accounting Policies [Line Items]
Depreciable life	20 years
Maximum [Member] | Leasehold Improvements [Member]
Accounting Policies [Line Items]
Depreciable life	15 years
Maximum [Member] | Furniture Fixture Equipment [Member]
Accounting Policies [Line Items]
Depreciable life	10 years
Maximum [Member] | Software [Member]
Accounting Policies [Line Items]
Depreciable life	5 years

Earnings Per Share Computation

Earnings Per Share Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Jan. 02, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net earnings attributable to Wolverine World Wide, Inc.	$ (170.7)	$ 22.4	$ (1.6)	$ 13	$ (0.9)	$ 48.7	$ 40.2	$ 40.5	$ (136.9)	$ 128.5	$ 200.1
Less: net earnings attributed to participating share-based awards									(0.8)	(2.6)	(7.5)
Net earnings (loss) used to calculate basic earnings per share									(137.7)	125.9	192.6
Adjustment for earnings reallocated to participating share-based awards									0	0.1	1.8
Net earnings (loss) used to calculate diluted earnings per share									$ (137.7)	$ 126	$ 194.4
Weighted average shares outstanding									81.8	85.7	94.8
Adjustment for unvested restricted common stock									(0.8)	(0.6)	(1.8)
Shares used to calculate basic earnings per share									81	85.1	93
Effect of dilutive share-based awards									0	2.1	2
Shares used to calculate diluted earnings per share									81	87.2	95
Earnings per share - Basic	$ (2.10)	$ 0.27	$ (0.02)	$ 0.16	$ (0.01)	$ 0.57	$ 0.45	$ 0.44	$ (1.70)	$ 1.48	$ 2.07
Earnings per share - Diluted	$ (2.10)	$ 0.27	$ (0.02)	$ 0.16	$ (0.01)	$ 0.57	$ 0.45	$ 0.43	$ (1.70)	$ 1.44	$ 2.05

Earnings Per Share Additional I

Earnings Per Share Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Earnings Per Share [Line Items]
Anti-dilutive stock options	1,179,088	133,505	25,230
Preferred stock, shares authorized	2,000,000
Preferred stock, par or stated value Per Share	$ 1
Purchase of common stock for treasury	$ (21)	$ (319.2)	$ (174.7)
Employee taxes paid under stock-based compensation plans	(24.8)	(16.9)	(8.8)
Common stock repurchase program, authorized amount	$ 400
Series A junior participating preferred stock [Member]
Earnings Per Share [Line Items]
Preferred stock, shares authorized	150,000
Series B junior participating preferred stock [Member]
Earnings Per Share [Line Items]
Preferred stock, shares authorized	500,000
Treasury Stock [Member]
Earnings Per Share [Line Items]
Purchase of common stock for treasury	$ (21)	$ (319.2)	$ (174.7)

Goodwill and Other Intangible_3

Goodwill and Other Intangibles Goodwill and Indefinite Lived Intangibles (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Goodwill [Roll Forward]
Goodwill	$ 438.9	$ 424.4
Goodwill, Foreign currency translation effects	3.5	2.5
Goodwill, Acquired During Period	0	12
Goodwill	$ 442.4	$ 438.9

Goodwill and Other Intangible_4

Goodwill and Other Intangibles Amortizable Intangibles (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	$ 133.2	$ 130.6
Accumulated amortization	60.2	52.8
Amortizable intangibles, net	73	77.8
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	114.5	113.3
Accumulated amortization	44.9	38.8
Amortizable intangibles, net	$ 69.6	$ 74.5
Finite-Lived Intangible Assets, Remaining Amortization Period	12 years	13 years
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	$ 18.7	$ 17.3
Accumulated amortization	15.3	14
Amortizable intangibles, net	$ 3.4	$ 3.3
Finite-Lived Intangible Assets, Remaining Amortization Period	3 years	3 years

Goodwill and Other Intangible_5

Goodwill and Other Intangibles Estimated Future Amortization Expense (Details) $ in Millions	Jan. 02, 2021USD ($)
Finite-Lived Intangible Assets Disclosure [Abstract]
2021	$ 7.1
2022	6.8
2023	6.6
2024	6.3
2025	$ 6

Goodwill and Other Intangible_6

Goodwill and Other Intangibles Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	$ 222.2	$ 0	$ 0
Indefinite-lived intangibles	382.3	604.5
Amortization expense	7.1	$ 8.6	$ 6.2
Sperry [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangibles	$ 296

Accounts Receivable (Details)

Accounts Receivable (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Sale Of Accounts Receivable, Maximum Amount Under Agreement	$ 75
Sale Of Accounts Receivable Percent Paid At Sale	90.00%
Accounts Receivable, Reduction Due To Sale	$ 0	$ 33.9
Accounts Receivable Sold	14.1	42.7	$ 264.3
Contractually Specified Servicing Fees, Amount	$ 0.1	$ 0.2	$ 1.3

Revenue From Contracts With C_3

Revenue From Contracts With Customers Disaggregated Revenue (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jan. 02, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Revenue	$ 509.6	$ 493.1	$ 349.1	$ 439.3	$ 607.4	$ 574.3	$ 568.6	$ 523.4	$ 1,791.1	$ 2,273.7	$ 2,239.2
Wolverine Michigan Group [Member]
Revenue									1,051	1,299.7	1,272.2
Wolverine Michigan Group [Member] | Sales Channel, Directly to Consumer [Member]
Revenue									236.8	164.8	143
Wolverine Michigan Group [Member] | Sales Channel, Through Intermediary [Member]
Revenue									814.2	1,134.9	1,129.2
Wolverine Boston Group [Member]
Revenue									696	910.9	895.5
Wolverine Boston Group [Member] | Sales Channel, Directly to Consumer [Member]
Revenue									187.1	167.5	133.5
Wolverine Boston Group [Member] | Sales Channel, Through Intermediary [Member]
Revenue									508.9	743.4	762
Other Segments [Member]
Revenue									44.1	63.1	71.5
Other Segments [Member] | Sales Channel, Directly to Consumer [Member]
Revenue									3.6	5.2	7.4
Other Segments [Member] | Sales Channel, Through Intermediary [Member]
Revenue									$ 40.5	$ 57.9	$ 64.1

Revenue From Contracts With C_4

Revenue From Contracts With Customers License Contracts (Details) $ in Millions	Jan. 02, 2021USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 26.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Year	2024

Revenue From Contracts With C_5

Revenue From Contracts With Customers Contract Balances (Details) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Revenue from Contract with Customer [Abstract]
Product returns reserve	$ 15.6	$ 11.4
Customer markdowns reserve	3.7	4.4
Other sales incentives reserve	6	2.3
Customer rebates liability	13.4	12
Customer advances liability	$ 8.2	$ 7.2

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Inventory Disclosure [Abstract]
LIFO inventory amount	$ 35.6	$ 81.2
Effect of LIFO Inventory Liquidation on Income	3.9	0.4
Excess of FIFO over LIFO value	$ 7.5	$ 11.4

Debt (Schedule of Borrowings) (

Debt (Schedule of Borrowings) (Details) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Debt Instrument [Line Items]
Borrowings under revolving credit agreements	$ 0	$ 360
Unamortized deferred financing costs	(7.5)	(4.1)
Debt and Capital Lease Obligations	722.5	798.4
Term Loan A [Member] | December Sixth Two Thousand Twenty Three [Domain]
Debt Instrument [Line Items]
Total debt	180	192.5
Senior Notes [Member] | September First Two Thousand Twenty Six [Member]
Debt Instrument [Line Items]
Total debt	$ 250	250
Senior Notes [Member] | May Fifteenth Two Thousand Twenty Five
Debt Instrument [Line Items]
Total debt		$ 0

Schedule of Annual Maturities o

Schedule of Annual Maturities of Long-Term Debt (Detail) $ in Millions	Jan. 02, 2021USD ($)
Debt Disclosure [Abstract]
2021	$ 10
2022	10
2023	160
2024	0
2025	300
Thereafter	$ 250

Debt (Additional Information) (

Debt (Additional Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Debt Instrument [Line Items]
Repayments of Debt	$ 171
Current maturities of long-term debt	10	$ 12.5
Borrowings under revolving credit agreements	0	360
Amortized deferred financing costs	2.7	1.6	$ 2.8
Maximum [Member]
Debt Instrument [Line Items]
Aggregate principal amount of debt instrument	$ 1,750
Alternative Base Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.00%
Alternative Base Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.125%
Euro Currency Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	2.00%
Euro Currency Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	1.125%
Foreign Currency Subfacility [Member]
Debt Instrument [Line Items]
Revolving credit facility amount	$ 200
Swingline Subfacility [Member]
Debt Instrument [Line Items]
Revolving credit facility amount	50
Letter of Credit Subfacility [Member]
Debt Instrument [Line Items]
Revolving credit facility amount	50
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Aggregate principal amount of debt instrument	800
Letters of credit, amount outstanding	6.1	$ 5.7
Foreign Line of Credit [Member]
Debt Instrument [Line Items]
Revolving credit facility amount	4
December Sixth Two Thousand Twenty Three [Domain] | Term Loan A [Member]
Debt Instrument [Line Items]
Aggregate principal amount of debt instrument	$ 200
Debt, Weighted Average Interest Rate	2.00%
May Fifteenth Two Thousand Twenty Five | Senior Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount of debt instrument	$ 300
Interest rate (percent)	6.375%
September First Two Thousand Twenty Six [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount of debt instrument	$ 250
Interest rate (percent)	5.00%

Property, Plant and Equipment P

Property, Plant and Equipment Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Property, Plant and Equipment [Abstract]
Land	$ 3.9	$ 3.9
Buildings and leasehold improvements	119.6	123.2
Furniture, fixtures and equipment	135.1	136.8
Software	63.2	61.1
Gross cost	321.8	325
Less: accumulated depreciation	197.2	184
Property, plant and equipment, net	$ 124.6	$ 141

Property, Plant and Equipment -

Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 25.7	$ 24.1	$ 25.3

Leases Operating Lease Costs (D

Leases Operating Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Leases [Abstract]
Operating lease cost	$ 34.1	$ 32.6
Variable lease cost	12.3	14.5
Short-term lease cost	1.2	1.2
Sublease income	4.8	4
Total lease cost	$ 42.8	$ 44.3

Leases Future Lease Payments (D

Leases Future Lease Payments (Details) $ in Millions	Jan. 02, 2021USD ($)
Leases [Abstract]
2021	$ 33.9
2022	29.5
2023	21.7
2024	18.3
2025	17.5
Thereafter	90.2
Total future payments	211.1
Less: imputed interest	46.8
Recognized lease liability	$ 164.3

Leases Additional Information (

Leases Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Leases [Abstract]
Operating Leases, Rent Expense, Sublease Rentals			$ 2.8
Operating Lease, Weighted Average Remaining Lease Term	9 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	5.20%
Operating Lease, Payments	$ 28.6	$ 33.2
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 6	$ 26.8
Operating Leases, Rent Expense			$ 32

Financial Instruments and Ris_4

Financial Instruments and Risk Management (Fair Value of Debt) (Details) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Fair Value Disclosures [Abstract]
Long-term debt, including current maturities, excluding capital leases	$ 722.5	$ 798.4
Fair value, long-term debt, including current maturities	$ 765.4	$ 817.6

Financial Instruments and Ris_5

Financial Instruments and Risk Management (Additional Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Financial Instruments And Derivatives [Line Items]
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 7.3	$ 0	$ 0
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(10.1)	$ 7.2
Interest rate swap [Member]
Financial Instruments And Derivatives [Line Items]
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	7.3
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	$ 4.9
Foreign exchange contracts [Member]
Financial Instruments And Derivatives [Line Items]
Maximum remaining maturity of foreign currency derivatives	538 days	545 days
Derivative, Net Hedge Ineffectiveness Gain (Loss)	$ 0.6	$ 1.2
Cross Currency Interest Rate Contract [Member]
Financial Instruments And Derivatives [Line Items]
Derivative, Maturity Date	Sep. 1, 2021
Derivative, Fixed Interest Rate	2.75%
Derivative, Forward Interest Rate	5.00%

Financial Instruments and Ris_6

Financial Instruments and Risk Management (Derivative Notional Amounts) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Foreign exchange contracts [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Notional Amounts	$ 250.7	$ 246.3
Foreign exchange contracts [Member] | Not Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Notional Amounts	0	7.3
Interest rate swap [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Notional Amounts	$ 0	355.8
Cross Currency Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Maturity Date	Sep. 1, 2021
Cross Currency Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Notional Amounts	$ 79.8	$ 79.8

Financial Instruments and Ris_7

Financial Instruments and Risk Management (Financial Assets and Liabilities Measured at Fair Value) (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Interest rate swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swap liability	$ 0	$ (1.8)
Foreign exchange contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange contracts asset	0	2.3
Foreign exchange contracts liability	(8.8)	(1.8)
Cross Currency Interest Rate Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Liabilities, Fair Value	$ (10.8)	$ (3)

Stock-Based Compensation Additi

Stock-Based Compensation Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Years)	3 years 10 months 24 days	4 years 4 months 24 days	5 years 2 months 12 days	5 years 9 months 18 days
Stock-based compensation expense	$ 28.9	$ 24.5	$ 31.2
Income tax benefits for grants	$ 5.6	4.8	6.4
Maximum expiry period of options granted from the grant date	10 years
Vesting period of options granted	3 years
Lapsing period of restrictions related to restricted stock issued	three- to four-year
Total pretax intrinsic value of options exercised	$ 9.3	$ 10.7	21.2
Closing stock price	$ 31.25
Stock options exercisable and in-the-money, number	3,096,685	3,974,757
Stock options exercisable and in-the-money, weighted average exercise price	$ 21.66	$ 21.29
Available For Issuance [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive units	6,060,880
Option Or Stock Appreciation Right [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive units	1
Non-Stock Option Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock incentive units	2.6
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to nonvested shares and stock option grants	$ 0.1	$ 0.2	$ 0.4
Weighted-average period of recognition	10 months 24 days	1 year 4 months 24 days	9 months 18 days
Restricted Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of shares vested	$ 35	$ 23.7	$ 17.4
Unrecognized compensation expense related to nonvested shares and stock option grants	$ 18.5	$ 19.9	$ 20.2
Weighted-average period of recognition	1 year 6 months	1 year 6 months	1 year 7 months 6 days
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of shares vested	$ 28	$ 22.8	$ 7.3
Unrecognized compensation expense related to nonvested shares and stock option grants	$ 1.4	$ 4.5	$ 19
Weighted-average period of recognition	1 year 4 months 24 days	1 year 1 month 6 days	1 year 8 months 12 days

Stock-Based Compensation Summar

Stock-Based Compensation Summary of Nonvested Restricted Shares Issued Under Stock Award Plans (Detail) - $ / shares	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Restricted Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested shares, Beginning balance	1,618,916	1,920,373	2,025,072
Shares, granted	1,416,117	554,092	609,276
Shares, vested	(1,122,811)	(681,938)	(560,263)
Shares, forfeited	(268,205)	(173,611)	(153,712)
Nonvested shares, Ending balance	1,644,017	1,618,916	1,920,373
Weighted-Average Grant Date Fair Value, Beginning balance	$ 27.36	$ 24.38	$ 21.70
Weighted Average Grant Date Fair Value, granted	22.59	34.73	31.81
Weighted-Average Grant Date Fair Value, vested	22.07	24.63	22.93
Weighted-Average Grant Date Fair Value, forfeited	29.67	28.47	23.81
Weighted-Average Grant Date Fair Value, Ending balance	$ 26.39	$ 27.36	$ 24.38
Performance Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested shares, Beginning balance	1,127,102	1,631,018	1,690,668
Shares, granted	455,207	370,830	384,657
Shares, vested	(451,334)	(654,021)	(229,023)
Shares, forfeited	(125,653)	(220,725)	(215,284)
Nonvested shares, Ending balance	1,005,322	1,127,102	1,631,018
Weighted-Average Grant Date Fair Value, Beginning balance	$ 31.94	$ 23.42	$ 21.54
Weighted Average Grant Date Fair Value, granted	34	37.10	35.10
Weighted-Average Grant Date Fair Value, vested	23.51	17.46	26.64
Weighted-Average Grant Date Fair Value, forfeited	35.91	19.74	26.18
Weighted-Average Grant Date Fair Value, Ending balance	$ 35.25	$ 31.94	$ 23.42

Stock-Based Compensation Stock

Stock-Based Compensation Stock Option Assumptions (Details) - $ / shares		12 Months Ended
		Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Share-based Payment Arrangement [Abstract]
Weighted-average fair values for options granted		$ 8.20	$ 9.07	$ 8.20
Expected market price volatility	[1]	31.20%	29.60%	29.60%
Risk-free interest rate	[2]	1.50%	2.50%	2.50%
Dividend yield	[3]	1.20%	1.00%	0.80%
Expected term	[4]	4 years	4 years	4 years
[1]	Based on historical volatility of the Company’s common stock. The expected volatility is based on the daily percentage change in the price of the stock over the four years prior to the grant.
[2]	Represents the U.S. Treasury yield curve in effect for the expected term of the option at the time of grant
[3]	Represents the Company’s estimated cash dividend yield for the expected term.
[4]	Represents the period of time that options granted are expected to be outstanding. As part of the determination of the expected term, the Company concluded that all employee groups exhibit similar exercise and post-vesting termination behavior.

Stock-Based Compensation Summ_2

Stock-Based Compensation Summary of Transactions Under Stock Option Plans (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares Under Option, Beginning Balance	4,033,107	4,702,002	6,089,664
Granted, Shares Under Option	28,171	25,471	28,171
Exercised, Shares Under Option	(788,883)	(681,389)	(1,359,387)
Cancelled, Shares Under Option	(12,990)	(12,977)	(56,446)
Shares Under Option, Ending Balance	3,259,405	4,033,107	4,702,002	6,089,664
Nonvested at January 2, 2021	(54,541)
Exercisable at January 2, 2021	3,204,864
Weighted-Average Exercise Price, Beginning Balance	$ 21.41	$ 20.83	$ 20.05
Granted, Weighted-Average Exercise Price	32.85	34.81	31.85
Exercised, Weighted-Average Exercise Price	18.39	17.87	17.69
Cancelled, Weighted-Average Exercise Price	25.39	23.97	17.12
Weighted-Average Exercise Price, Ending Balance	22.22	$ 21.41	$ 20.83	$ 20.05
Weighted-average exercise price of options, exercisable	$ 22.03
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Years)	3 years 10 months 24 days	4 years 4 months 24 days	5 years 2 months 12 days	5 years 9 months 18 days
Average remaining contractual term, exercisable	3 years 9 months 18 days
Aggregate Intrinsic Value	$ 29.7	$ 49.8	$ 54.5	$ 72.1
Exercisable, aggregate intrinsic value	$ 29.7

Retirement Plans - Additional I

Retirement Plans - Additional Information (Detail) $ in Millions	12 Months Ended
	Jan. 02, 2021USD ($)	Dec. 28, 2019USD ($)	Dec. 29, 2018USD ($)
Schedule Of Other Postretirement Benefits [Line Items]
Cash surrender value of life insurance	$ 44	$ 66.8
Defined contribution plan cost recognized	4.2	5.2	$ 4.5
Defined contribution plan at foreign subsidiary	1.3	1.1	1.1
Deferred recognized compensation liability	1	0.9
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	92.8	61.4
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax	(73.5)	(48.7)
Accumulated benefit obligations for all defined benefit pension plans and the SERP	430.2	378.4
Actuarial loss included in accumulated other comprehensive income (loss)	$ 13.8
Amortization of Unrecognized net actuarial losses exceeding certain corridors period	5 years
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement			(66.6)
Settlement loss	$ 0	0	$ 7.2
Equity securities [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Target investment allocation	57.00%
Fixed income securities [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Target investment allocation	38.00%
Real Estate Investment [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Target investment allocation	5.00%
Pension [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Number Of Retirement Plans	2
Defined Contribution Plan [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Number Of Retirement Plans	2
SERP [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Cash surrender value of life insurance	$ 36.6	$ 59.6
Expected contributions to defined benefit plans	$ 3.8

Retirement Plans - Changes in C

Retirement Plans - Changes in Company's Assets and Related Obligations for its Pension Plans (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Change in projected benefit obligations:
Projected benefit obligations at beginning of the year	$ 401	$ 348.8
Service cost pertaining to benefits earned during the year	6.4	5.5	$ 6.3
Interest cost on projected benefit obligations	14.2	15.2	16.5
Actuarial losses	48.1	45.4
Benefits paid to plan participants	(13.9)	(13.9)
Settlement			66.6
Projected benefit obligations at end of the year	455.8	401	348.8
Change in fair value of pension assets:
Fair value of pension assets at beginning of the year	287.6	254.4
Actual return on plan assets	28.8	44.7
Benefits paid to plan participants	(13.9)	(13.9)
Fair value of pension assets at end of the year	305	287.6	254.4
Funded status	(150.8)	(113.4)
Amounts recognized in the consolidated balance sheets:
Current liabilities	(3.8)	(3.7)
Noncurrent liabilities	(147)	(109.7)
Net amount recognized	(150.8)	(113.4)
Funded status of pension plans and SERP (supplemental):
Funded status of qualified defined benefit plans and SERP	(150.8)	(113.4)
Nonqualified trust assets	44	66.8
Net funded status of pension plans and SERP (supplemental)	(114.2)	(53.8)
Settlement loss	0	0	$ 7.2
SERP [Member]
Change in fair value of pension assets:
Company contributions	2.5	2.4
Funded status of pension plans and SERP (supplemental):
Nonqualified trust assets	$ 36.6	$ 59.6

Retirement Plans - Summary of N

Retirement Plans - Summary of Net Pension and SERP Expense Recognized (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Defined Benefit Plan Disclosure [Line Items]
Service cost pertaining to benefits earned during the year	$ 6.4	$ 5.5	$ 6.3
Interest cost on projected benefit obligations	14.2	15.2	16.5
Expected return on pension assets	(18.7)	(17.7)	(21.5)
Net amortization loss	6.6	2.6	3.3
Settlement loss	0	0	7.2
Net pension expense	8.5	5.6	11.8
Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Net pension expense	3.3	0.2	6.3
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Net pension expense	$ 5.2	$ 5.4	$ 5.5

Retirement Plans - Weighted Ave

Retirement Plans - Weighted Average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost (Detail)	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Weighted-average assumptions used to determine benefit obligations at fiscal year-end:
Discount rate	2.85%	3.60%
Weighted average assumptions used to determine net periodic benefit cost for the years ended:
Discount rate	3.60%	4.46%
Expected long-term rate of return on plan assets	6.75%	6.75%
Pension [Member]
Weighted-average assumptions used to determine benefit obligations at fiscal year-end:
Rate of compensation increase	4.18%	4.23%
Weighted average assumptions used to determine net periodic benefit cost for the years ended:
Rate of compensation increase	4.23%	3.82%
SERP [Member]
Weighted-average assumptions used to determine benefit obligations at fiscal year-end:
Rate of compensation increase	7.00%	7.00%
Weighted average assumptions used to determine net periodic benefit cost for the years ended:
Rate of compensation increase	7.00%	7.00%

Retirement Plans - Asset Alloca

Retirement Plans - Asset Allocations (Detail) - USD ($) $ in Millions		Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Schedule Of Other Postretirement Benefits [Line Items]
Fair value of plan assets		$ 305	$ 287.6	$ 254.4
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		100.00%	100.00%
Equity securities [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		56.80%	56.40%
Equity securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Fair value of plan assets	[1]	$ 173.3	$ 162.2
Fixed income securities [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		37.00%	36.90%
Fixed income securities [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Fair value of plan assets	[1]	$ 112.7	$ 106.2
Real Estate Investment [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		5.50%	5.90%
Real Estate Investment [Member] | Fair Value Measured at Net Asset Value Per Share [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Fair value of plan assets	[1]	$ 16.7	$ 16.9
Other Investments [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		0.70%	0.80%
Other Investments [Member] | Fair Value, Inputs, Level 3 [Member]
Schedule Of Other Postretirement Benefits [Line Items]
Fair value of plan assets	[2]	$ 2.3	$ 2.3
[1]	In accordance with ASC 820, Fair Value Measurement
[2]	In accordance with ASC 820, investments have been measured using valuation techniques in which one or more significant inputs are unobservable (Level 3). See Note 16 for additional information.

Retirement Plans - Expected Ben

Retirement Plans - Expected Benefit Payments (Detail) $ in Millions	Jan. 02, 2021USD ($)
Retirement Benefits [Abstract]
2021	$ 16.4
2022	17.1
2023	17.8
2024	18.6
2025	19.3
2026-2030	$ 105.7

Income Taxes - Geographic Compo

Income Taxes - Geographic Components of Earnings Before Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Income Tax Disclosure [Abstract]
United States	$ (218.6)	$ 79.3	$ 159.2
Foreign	34.5	66.6	68.2
Earnings (loss) before income taxes	$ (184.1)	$ 145.9	$ 227.4

Income Taxes - Provisions for I

Income Taxes - Provisions for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Current expense:
Federal	$ 0.7	$ 10.6	$ 6.7
State	0.6	0.5	2.4
Foreign	8.3	12.5	10.9
Deferred expense (credit):
Federal	(51.6)	(5.8)	2.1
State	(4.4)	(2)	3.3
Foreign	0.9	1.2	1.7
Total provision for income taxes	$ (45.5)	$ 17	$ 27.1

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Income Tax Expense, Net of Federal Income Tax Rate (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Income Taxes [Line Items]
Income taxes at U.S. statutory rate of 21%	$ (38.7)	$ 30.6	$ 47.7
State income taxes, net of federal income tax	(8.1)	0.5	2.8
Adjustments for uncertain tax positions	(1.4)	(1)	(1.4)
Change in valuation allowance	4.7	(0.2)	3.3
Change in state tax rates	0	(1.5)	1.9
Global Intangible Low Tax Income Tax	2.5	2.1	3.7
Foreign Derived Intangible Income Tax Credit	(1.6)	(4.4)	(6.8)
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	1.6	2	0.9
Tax Adjustments, Settlements, and Unusual Provisions	(4.6)	(5.1)	(3.8)
Income tax benefits for grants	5.6	4.8	6.4
Effective Income Tax Rate Reconciliation Deferred Tax On Future Dividends Due To TCJA	1	0.6	(0.9)
Other Permanent adjustments and non-deductible expenses	1	(0.6)	(6.7)
Other	0.2	(0.3)	0.3
Income tax expense (benefit)	(45.5)	17	27.1
HONG KONG
Income Taxes [Line Items]
Foreign earnings taxed at rates different from the U.S. statutory rate:	(3.3)	(8.5)	(10.8)
OTHER JURISDICTIONS
Income Taxes [Line Items]
Foreign earnings taxed at rates different from the U.S. statutory rate:	$ 1.2	$ 2.8	$ (3.1)

Income Taxes - Significant Comp

Income Taxes - Significant Components of Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Deferred income tax assets:
Accounts receivable and inventory valuation allowances	$ 3.5	$ 5.7
Deferred compensation accruals	4.5	4
Accrued pension expense	33.4	25.3
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	9.1	14.5
Net operating loss and foreign tax credit carryforwards	21	17.6
Book over tax depreciation and amortization	0.4	0.5
Tenant lease expenses	4.4	3.6
Environmental reserve	24.9	15.4
Other	9.1	5.1
Total gross deferred income tax assets	110.3	91.7
Less valuation allowance	(22.3)	(17.6)
Net deferred income tax assets	88	74.1
Deferred income tax liabilities:
Intangible assets	(105.3)	(157.5)
Deferred Tax Liabilities, Deferred Expense	(10.7)	(8.6)
Deferred Tax Liabilities, Other	4.3	4.1
Total deferred income tax liabilities	(120.3)	(170.2)
Total deferred income tax liabilities	$ (32.3)	$ (96.1)

Income Taxes - Summarizes Unrec

Income Taxes - Summarizes Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Income Tax Disclosure [Abstract]
Beginning balance	$ 6.9	$ 7.9
Increases related to current year tax positions	2.6	1.6
Decreases related to prior year positions	(1.3)	(1.4)
Decreases relating to settlements with taxing authorities	(2.4)	(1.2)
Decrease due to lapse of statute	(0.3)	0
Ending balance	$ 5.5	$ 6.9

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Operating Loss Carryforwards [Line Items]
Deferred tax assets, Valuation Allowance	$ 22.3	$ 17.6
Tax credit carryforwards	22
Portion of the unrecognized tax benefits if recognized, reduction of annual effective tax rate	5	6.5
Interest accrued related to unrecognized tax benefits	0.6	1.5
Deferred Tax Liabilities, Tax Deferred Income	2.2	1.2
Undistributed Earnings of Foreign Subsidiaries	229.1
Change in valuation allowance	4.7	$ (0.2)	$ 3.3
Foreign country [Member]
Operating Loss Carryforwards [Line Items]
Foreign net operating loss carryforwards	30.1
Tax credit carryforwards	3.1
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Foreign net operating loss carryforwards	189
Deferred Tax Asset, State [Member]
Operating Loss Carryforwards [Line Items]
Change in the total valuation allowance	0.6
Net Operating Loss Carryforwad, State and Local [Member]
Operating Loss Carryforwards [Line Items]
Change in the total valuation allowance	(1.9)
Net Operating Losses and Tax Credits, Foreign [Member]
Operating Loss Carryforwards [Line Items]
Change in the total valuation allowance	$ (2.2)

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions		12 Months Ended
		Jan. 02, 2021		Dec. 28, 2019		Dec. 29, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax		$ (17.6)		$ 0.9		$ 14.4
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning balance		(102.1)		(88.3)
Other comprehensive income (loss) before reclassifications	[1]	(36.8)		(8.3)
Amounts reclassified from accumulated other comprehensive income (loss)		10.1		(7.2)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax		(1.8)		1.7
Net reclassifications		8.3		(5.5)
Other comprehensive income (loss)		(28.5)	[1]	(13.8)	[1]	(5)
Accumulated other comprehensive income (loss), Ending Balance		(130.6)		(102.1)		(88.3)
Interest rate swap [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive income (loss)		(4.9)
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning balance		(47.6)		(53)
Other comprehensive income (loss) before reclassifications		10.8		5.4
Amounts reclassified from accumulated other comprehensive income (loss)		0		0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax		0		0
Net reclassifications		0		0
Other comprehensive income (loss)	[1]	10.8		5.4
Accumulated other comprehensive income (loss), Ending Balance		(36.8)		(47.6)		(53)
Derivative [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax		(17.6)		0.9
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning balance		(5.8)		0.9
Amounts reclassified from accumulated other comprehensive income (loss)	[2]	3.5		(9.8)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax		(0.4)		2.2
Net reclassifications		3.1		(7.6)
Other comprehensive income (loss)	[1]	(14.5)		(6.7)
Accumulated other comprehensive income (loss), Ending Balance		(20.3)		(5.8)		0.9
Pension adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), Beginning balance		(48.7)		(36.2)
Other comprehensive income (loss) before reclassifications		(30)		(14.6)
Amounts reclassified from accumulated other comprehensive income (loss)	[3]	6.6		2.6
Reclassification from Accumulated Other Comprehensive Income, Current Period, Tax		(1.4)		(0.5)
Net reclassifications		5.2		2.1
Other comprehensive income (loss)	[1]	(24.8)		(12.5)
Accumulated other comprehensive income (loss), Ending Balance		$ (73.5)		$ (48.7)		$ (36.2)
[1]	Other comprehensive income (loss) is reported net of taxes and noncontrolling interest.
[2]	Amounts related to foreign currency derivatives deemed to be highly effective are included in cost of goods sold. Amounts related to foreign currency derivatives that are no longer deemed to be highly effective are included in other income. 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 Recurri

Fair Value Measurements Recurring and Nonrecurring Fair Value Measurements (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	$ 0	$ 2.3
Derivative Liability	$ (19.6)	$ (6.6)

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Disclosures (Details) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Fair Value Disclosures [Abstract]
Long-term Debt	$ 722.5	$ 798.4
Long-term Debt, Fair Value	$ 765.4	$ 817.6

Fair Value Measures and Disclos

Fair Value Measures and Disclosures Other Details (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Fair Value Disclosures [Abstract]
Impairment of intangible assets	$ 222.2	$ 0	$ 0

Litigation and Contingencies En

Litigation and Contingencies Environmental Remediation Obligation (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Accrual for Environmental Loss Contingencies [Roll Forward]
Remediation liability at beginning of the year	$ 124.4	$ 22.6
Changes in estimate	0	112.9
Amounts paid	(22.6)	(11.1)
Remediation liability at the end of the year	$ 101.8	$ 124.4

Litigation and Contingencies _2

Litigation and Contingencies Environmental Remediation (Details) $ in Millions	12 Months Ended
	Jan. 02, 2021USD ($)
Environmental Remediation Obligations [Abstract]
Site Contingency, Recovery from Third Party of Environmental Remediation Cost	$ 55
Insurance Recoveries	8.3
Environmental remediation accrual, current	23.6
Environmental remediation accrual, noncurrent	$ 78.2
Site Contingency, Time Frame of Disbursements	25

Litigation and Contingencies -

Litigation and Contingencies - Minimum Royalty and Advertising Obligations Due Under Terms of Certain Licenses Held by Company (Detail) $ in Millions	Jan. 02, 2021USD ($)
Advertising [Member]
Schedule Of Commitments And Contingencies [Line Items]
2021	$ 3.3
2022	3.4
2023	3.5
2024	3.6
2025	0
Thereafter	0
Royalties [Member]
Schedule Of Commitments And Contingencies [Line Items]
2021	1.7
2022	1.8
2023	0
2024	0
2025	0
Thereafter	$ 0

Litigation and Contingencies _3

Litigation and Contingencies - Royalty and Adverting Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Long-term Purchase Commitment [Line Items]
Advertising expense	$ 135.6	$ 119.4	$ 120.8
Licensing arrangements [Member]
Long-term Purchase Commitment [Line Items]
Royalty expense	1.9	2.3	2.2
Advertising expense	$ 2.5	$ 3.6	$ 3.3

Business Segments - Business Se

Business Segments - Business Segment Information (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jan. 02, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Segment Reporting Information [Line Items]
Revenue	$ 509.6	$ 493.1	$ 349.1	$ 439.3	$ 607.4	$ 574.3	$ 568.6	$ 523.4	$ 1,791.1	$ 2,273.7	$ 2,239.2
Operating profit (loss)									(137.1)	171	251.9
Depreciation and amortization expense									32.8	32.7	31.5
Capital expenditures									10.3	34.4	21.7
Total assets	2,137.4				2,480				2,137.4	2,480
Goodwill	442.4				438.9				442.4	438.9	424.4
Wolverine Michigan Group [Member]
Segment Reporting Information [Line Items]
Revenue									1,051	1,299.7	1,272.2
Operating profit (loss)									179.9	244.8	257.6
Depreciation and amortization expense									2.7	2.4	2.7
Capital expenditures									0.8	2.2	3.1
Total assets	626.9				773.8				626.9	773.8
Goodwill	145.4				144.4				145.4	144.4
Wolverine Boston Group [Member]
Segment Reporting Information [Line Items]
Revenue									696	910.9	895.5
Operating profit (loss)									88.1	153.8	157.5
Depreciation and amortization expense									3.4	3.3	3.3
Capital expenditures									2.3	5.7	1.2
Total assets	1,077.8				1,354.8				1,077.8	1,354.8
Goodwill	297				294.5				297	294.5
Other Segments [Member]
Segment Reporting Information [Line Items]
Revenue									44.1	63.1	71.5
Operating profit (loss)									1.6	2.9	3.1
Depreciation and amortization expense									2	2.4	3.1
Capital expenditures									0.9	2.2	1.8
Total assets	31.4				38.4				31.4	38.4
Corporate [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)									(406.7)	(230.5)	(166.3)
Depreciation and amortization expense									24.7	24.6	22.4
Capital expenditures									6.3	24.3	$ 15.6
Total assets	$ 401.3				$ 313				$ 401.3	$ 313

Business Segments - Geographic

Business Segments - Geographic Information, Based on Shipping Destination, Related to Revenue from External Customers (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Revenue from External Customer [Line Items]
Revenues	$ 1,791.1	$ 2,273.7	$ 2,239.2
United States [Member]
Revenue from External Customer [Line Items]
Revenues	1,234.2	1,507.9	1,505.2
Europe [Member]
Revenue from External Customer [Line Items]
Revenues	279.8	343.1	325.7
Asia Pacific [Member]
Revenue from External Customer [Line Items]
Revenues	120.3	193.7	186
CANADA
Revenue from External Customer [Line Items]
Revenues	88.9	117.9	116.7
Latin America [Member]
Revenue from External Customer [Line Items]
Revenues	67.9	111.1	105.6
Foreign [Member]
Revenue from External Customer [Line Items]
Revenues	$ 556.9	$ 765.8	$ 734

Business Segments - Company's L

Business Segments - Company's Long-Lived Assets (Primarily Property, Plant and Equipment) (Detail) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Segment Reporting Information [Line Items]
Long-lived assets	$ 267.1	$ 301.8	$ 130.9
United States [Member]
Segment Reporting Information [Line Items]
Long-lived assets	222.2	247.2	117.1
Foreign [Member]
Segment Reporting Information [Line Items]
Long-lived assets	$ 44.9	$ 54.6	$ 13.8

Business Segments - Additional

Business Segments - Additional Information (Detail)	12 Months Ended
	Jan. 02, 2021
Segment Reporting [Abstract]
Percentage of sources of footwear products from unrelated suppliers in foreign country region	100.00%

Business Acquisitions Busines_2

Business Acquisitions Business Acquisitions Schedule of Consideration Transferred (Details) $ in Millions	12 Months Ended
	Dec. 28, 2019USD ($)
Business Combinations [Abstract]
Cash paid	$ 15.1
Extinguishment of Sportlab’s accounts payable balance	4.6
Contingent consideration	5.5
Total purchase consideration	$ 25.2

Business Acquisitions Busines_3

Business Acquisitions Business Acquisition Acquired Assets and Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		$ 1.8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory		6.2
Goodwill, Acquired During Period	$ 0	12
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		12.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		32.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities		3.2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		4.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		7.7
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net		25.2
Wolverine Boston Group [Member]
Business Acquisition [Line Items]
Goodwill, Acquired During Period		$ 12

Business Acquisitions (Addition

Business Acquisitions (Additional Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Business Acquisition [Line Items]
Total purchase consideration		$ 25.2
Goodwill, Acquired During Period	$ 0	12
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		12.9
Wolverine Boston Group [Member]
Business Acquisition [Line Items]
Goodwill, Acquired During Period		12
Backlog [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 1.7
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		7 months
Customer Relationships [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 11.2
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		14 years

Quarterly Results of Operatio_3

Quarterly Results of Operations (Unaudited) - Company's Unaudited Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Jan. 02, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 509.6	$ 493.1	$ 349.1	$ 439.3	$ 607.4	$ 574.3	$ 568.6	$ 523.4	$ 1,791.1	$ 2,273.7	$ 2,239.2
Gross profit	204.6	202	147.2	181.8	229.9	243.3	230.4	220.2	735.6	923.8	921.3
Net earnings (loss) attributable to Wolverine World Wide, Inc.	$ (170.7)	$ 22.4	$ (1.6)	$ 13	$ (0.9)	$ 48.7	$ 40.2	$ 40.5	$ (136.9)	$ 128.5	$ 200.1
Net earnings (loss) per share:
Earnings per share - Basic	$ (2.10)	$ 0.27	$ (0.02)	$ 0.16	$ (0.01)	$ 0.57	$ 0.45	$ 0.44	$ (1.70)	$ 1.48	$ 2.07
Earnings per share - Diluted	$ (2.10)	$ 0.27	$ (0.02)	$ 0.16	$ (0.01)	$ 0.57	$ 0.45	$ 0.43	$ (1.70)	$ 1.44	$ 2.05

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions		12 Months Ended
		Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		$ 34	$ 34.9	$ 43
Charged to costs and expense		80.3	77.5	80.6
Deductions		71.7	78.4	88.7
Balance at end of period		42.6	34	34.9
Allowance for doubtful accounts [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		6	4	6.8
Charged to costs and expense		9.7	5.1	2.8
Deductions	[1]	9	3.1	5.6
Balance at end of period		6.7	6	4
Allowance for sales returns [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		11.4	13.6	12.6
Charged to costs and expense		41.5	50.2	53.8
Deductions	[2]	37.3	52.4	52.8
Balance at end of period		15.6	11.4	13.6
Allowance for cash discounts [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		9.3	9	12.1
Charged to costs and expense		19.8	15.3	17.9
Deductions	[3]	17.9	15	21
Balance at end of period		11.2	9.3	9
Inventory valuation allowances [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		7.3	8.3	11.5
Charged to costs and expense		9.3	6.9	6.1
Deductions	[4]	7.5	7.9	9.3
Balance at end of period		$ 9.1	$ 7.3	$ 8.3
[1]	Accounts charged off, net of recoveries.
[2]	Actual customer returns.
[3]	Discounts given to customers.
[4]	Adjustment upon disposal of related inventories.