Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2025	Sep. 27, 2024	Sep. 26, 2025	Sep. 27, 2024
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (30.3)	$ 8.2	$ 14.1	$ (1,119.8)
Other comprehensive income (loss), net of income taxes:
Foreign currency translation adjustments	10.5	78.1	258.3	(5.9)
Pension plan adjustments	(0.1)	(0.1)	(0.3)	(0.5)
Total other comprehensive income (loss), net of income taxes	10.4	78.0	258.0	(6.4)
Comprehensive (loss) income	$ (19.9)	$ 86.2	$ 272.1	$ (1,126.2)