CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Paid-In Capital	Retained Deficit	Accum. Other Comprehensive Income	Common Stock In Treasury
Balance at beginning of period at Dec. 31, 2020	$ 640.1	$ 0.5	$ 1,319.9	$ (477.2)	$ 248.5	$ (451.6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	26.8			26.8
Other comprehensive income, net	2.7				2.7
Incentive plan activity	3.8		3.8
Long-term incentive compensation expense	3.0		3.0
Restricted stock unit vesting	(4.7)		(10.9)			6.2
Balance at end of period at Apr. 03, 2021	671.7	0.5	1,315.8	(450.4)	251.2	(445.4)
Balance at beginning of period at Dec. 31, 2021	1,102.9	0.5	1,334.2	(51.8)	263.9	(443.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11.4			11.4
Other comprehensive income, net	3.0				3.0
Incentive plan activity	2.5		2.5
Long-term incentive compensation expense	3.1		3.1
Restricted stock unit vesting	(7.1)		(18.6)			11.5
Balance at end of period at Apr. 02, 2022	$ 1,115.8	$ 0.5	$ 1,321.2	$ (40.4)	$ 266.9	$ (432.4)