Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2021	Jul. 03, 2020	Jul. 02, 2021	Jul. 03, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 90.1	$ (93.5)	$ 161.8	$ (110.7)
Other comprehensive income (loss), net of income taxes:
Foreign currency translation adjustments	14.4	33.1	(39.3)	(4.1)
Cash flow hedge adjustments	1.1	0.0	2.5	(8.9)
Pension plan adjustments	(0.5)	0.3	(0.3)	0.7
Total other comprehensive income (loss), net of income taxes	15.0	33.4	(37.1)	(12.3)
Comprehensive income (loss)	$ 105.1	$ (60.1)	$ 124.7	$ (123.0)