Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2025	Jun. 28, 2024	Jun. 27, 2025	Jun. 28, 2024
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 26.4	$ (1,151.6)	$ 44.4	$ (1,128.0)
Other comprehensive income (loss), net of income taxes:
Foreign currency translation adjustments	149.7	(17.8)	247.8	(84.0)
Pension plan adjustments	(0.1)	(0.2)	(0.2)	(0.4)
Total other comprehensive income (loss), net of income taxes	149.6	(18.0)	247.6	(84.4)
Comprehensive income (loss)	$ 176.0	$ (1,169.6)	$ 292.0	$ (1,212.4)