Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (57.7)	$ 60.6	$ (19.6)	$ 167.0
Other comprehensive income (loss):
Foreign currency translation adjustments	32.5	86.7	(79.1)	(5.5)
Change in fair value of derivative financial instruments, net of tax	(1.3)	(0.7)	(7.3)	(10.1)
Change in post-retirement and pension liability, net of tax	(0.8)	(1.2)	(1.5)	(3.1)
Other comprehensive income (loss), net of tax	30.4	84.8	(87.9)	(18.7)
Comprehensive income (loss)	$ (27.3)	$ 145.4	$ (107.5)	$ 148.3