Fair Value of Financial Instruments - Fair Value Hierarchy (Details) - Fair value, recurring - USD ($) $ in Millions	Jun. 26, 2022	Dec. 26, 2021	Jun. 27, 2021
Assets:
Available-for-sale securities	$ 1.7	$ 1.9	$ 2.3
Derivatives	19.8	10.9	6.8
Total assets	21.5	12.8	9.1
Liabilities:
Derivatives	0.8	2.6	5.7
Option agreement	1.7	1.7	21.8
Total liabilities	2.5	4.3	27.5
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Available-for-sale securities	1.7	1.9	2.3
Derivatives	0.0	0.0	0.0
Total assets	1.7	1.9	2.3
Liabilities:
Derivatives	0.0	0.0	0.0
Option agreement	0.0	0.0	0.0
Total liabilities	0.0	0.0	0.0
Significant Other Observable Inputs (Level 2)
Assets:
Available-for-sale securities	0.0	0.0	0.0
Derivatives	19.8	10.9	6.8
Total assets	19.8	10.9	6.8
Liabilities:
Derivatives	0.8	2.6	5.7
Option agreement	0.0	0.0	0.0
Total liabilities	0.8	2.6	5.7
Significant Unobservable Inputs (Level 3)
Assets:
Available-for-sale securities	0.0	0.0	0.0
Derivatives	0.0	0.0	0.0
Total assets	0.0	0.0	0.0
Liabilities:
Derivatives	0.0	0.0	0.0
Option agreement	1.7	1.7	21.8
Total liabilities	$ 1.7	$ 1.7	$ 21.8