Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Sep. 26, 2020	Oct. 02, 2021	Sep. 26, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (58.9)	$ (154.6)	$ (78.5)	$ 12.4
Other comprehensive income (loss):
Foreign currency translation adjustments	(228.3)	86.5	(307.5)	81.0
Change in fair value of derivative financial instruments, net of tax	(23.8)	(2.3)	(31.1)	(12.4)
Change in post-retirement and pension liability, net of tax	(0.8)	(1.2)	(2.2)	(4.3)
Other comprehensive income (loss), net of tax	(252.9)	83.0	(340.8)	64.3
Comprehensive income (loss)	$ (311.8)	$ (71.6)	$ (419.3)	$ 76.7