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)
Balance at beginning of year at Jan. 03, 2021		$ 36.7	$ 3.4	$ (16.5)	$ (0.6)	$ 21.3	$ 1,162.9	$ (4.2)
Increase (Decrease) in Stockholders' Equity
Conversions of stock		0.0	0.0
Net issuance of stock awards and other				2.0	0.0	2.6
Purchase of treasury stock				0.0
Net earnings (loss)	$ 156.1						156.1
Dividends							(4.0)
Share retirement		0.0					0.0
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)
Increase (Decrease) in Stockholders' Equity
Conversions of stock		0.0	0.0
Net issuance of stock awards and other				2.8	0.0	4.1
Purchase of treasury stock				(7.8)
Net earnings (loss)	(62.5)						(62.5)
Dividends							(10.6)
Share retirement		(1.6)					(25.6)
Other comprehensive income (loss), net of tax	19.2							19.2
Balance at end of year at Jan. 01, 2023	1,254.2	35.1	3.4	(19.5)	(0.6)	28.0	1,216.3	(8.5)
Increase (Decrease) in Stockholders' Equity
Conversions of stock		0.1	(0.1)
Net issuance of stock awards and other				5.0	0.0	2.6
Purchase of treasury stock				(42.2)
Net earnings (loss)	36.4						36.4
Dividends							(11.0)
Share retirement		0.0					0.0
Other comprehensive income (loss), net of tax	8.7							8.7
Balance at end of year at Dec. 31, 2023	$ 1,253.7	$ 35.2	$ 3.3	$ (56.7)	$ (0.6)	$ 30.6	$ 1,241.7	$ 0.2