Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock Class A common stock, Capital Stock	Common Stock Class B common stock, Capital Stock	Treasury Stock Class A common stock, Treasury Stock	Treasury Stock Class B common stock, Treasury Stock	Paid-in Capital	Earnings Invested in the Business	Accumulated Other Comprehensive Income (Loss)	Cumulative Effect, Period of Adoption, Adjustment Earnings Invested in the Business
Balance at beginning of year at Dec. 30, 2018		$ 36.6	$ 3.5	$ (25.4)	$ (0.6)	$ 24.4	$ 1,138.1	$ (17.1)
Increase (Decrease) in Stockholders' Equity
Conversion from Class B to Class A		0.0	0.0
Net issuance of stock awards				5.1	0.0	(1.9)
Net earnings (loss)	$ 112.4						112.4
Dividends							(11.9)
Other comprehensive income (loss), net of tax	1.3							1.3
Balance at end of year at Dec. 29, 2019	1,264.5	36.6	3.5	(20.3)	(0.6)	22.5	1,238.6	(15.8)
Increase (Decrease) in Stockholders' Equity
Conversion from Class B to Class A		0.1	(0.1)
Net issuance of stock awards				3.8	0.0	(1.2)
Net earnings (loss)	(72.0)						(72.0)
Dividends							(3.0)
Other comprehensive income (loss), net of tax	11.6							11.6
Balance at end of year at Jan. 03, 2021	1,203.0	36.7	3.4	(16.5)	(0.6)	21.3	1,162.9	(4.2)
Balance at end of year (Accounting Standards Update 2016-13) at Jan. 03, 2021									$ (0.7)
Increase (Decrease) in Stockholders' Equity
Conversion from Class B to Class A		0.0	0.0
Net issuance of stock awards				2.0	0.0	2.6
Net earnings (loss)	156.1						156.1
Dividends							(4.0)
Other comprehensive income (loss), net of tax	(23.5)							(23.5)
Balance at end of year at Jan. 02, 2022	$ 1,336.2	$ 36.7	$ 3.4	$ (14.5)	$ (0.6)	$ 23.9	$ 1,315.0	$ (27.7)