Other Comprehensive Earnings (Loss) - Schedule of Accumulated Other Comprehensive Earnings (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 26, 2021	Dec. 27, 2020	Dec. 29, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ (195.0)
Current period other comprehensive earnings (loss)	(45.1)	$ 6.4	$ 36.7
Reclassifications from AOCE to earnings	4.8	(17.2)	73.8
Ending balance	(235.3)	(195.0)
Pension and Postretirement Amounts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(40.7)	(36.1)	(143.1)
Current period other comprehensive earnings (loss)	3.4	(6.6)	14.8
Reclassifications from AOCE to earnings	2.2	2.0	92.2
Ending balance	(35.1)	(40.7)	(36.1)
Gains (Losses) on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(22.1)	(5.2)	1.5
Current period other comprehensive earnings (loss)	13.5	2.4	11.7
Reclassifications from AOCE to earnings	2.6	(19.3)	(18.4)
Ending balance	(6.0)	(22.1)	(5.2)
Unrealized Holding Gains (Losses) on Available for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0.3	(0.3)	(0.9)
Current period other comprehensive earnings (loss)	(0.1)	0.5	0.6
Reclassifications from AOCE to earnings	0.0	0.0	0.0
Ending balance	0.2	0.3	(0.3)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(132.5)	(142.6)	(152.2)
Current period other comprehensive earnings (loss)	(61.9)	10.1	9.6
Reclassifications from AOCE to earnings	0.0	0.0	0.0
Ending balance	(194.4)	(132.5)	(142.6)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(195.0)	(184.2)	(294.7)
Ending balance	$ (235.3)	$ (195.0)	$ (184.2)