Fair Value of Financial Instruments - Fair Value Hierarchy (Details) - USD ($) $ in Millions	Sep. 29, 2024	Dec. 31, 2023	Oct. 01, 2023
Assets:
Short-term investments	$ 489.3	$ 0.0	$ 0.0
Fair Value, Recurring
Assets:
Short-term investments	489.3
Available-for-sale securities	0.6	1.1	1.2
Derivatives	3.4	0.7	8.3
Total assets	493.3	1.8	9.5
Liabilities:
Derivatives	5.9	3.9	2.1
Option agreement	1.7	1.7	1.7
Total liabilities	7.6	5.6	3.8
Fair Value, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Short-term investments	489.3
Available-for-sale securities	0.6	1.1	1.2
Derivatives	0.0	0.0	0.0
Total assets	489.9	1.1	1.2
Liabilities:
Derivatives	0.0	0.0	0.0
Option agreement	0.0	0.0	0.0
Total liabilities	0.0	0.0	0.0
Fair Value, Recurring | Significant Other Observable Inputs (Level 2)
Assets:
Short-term investments	0.0
Available-for-sale securities	0.0	0.0	0.0
Derivatives	3.4	0.7	8.3
Total assets	3.4	0.7	8.3
Liabilities:
Derivatives	5.9	3.9	2.1
Option agreement	0.0	0.0	0.0
Total liabilities	5.9	3.9	2.1
Fair Value, Recurring | Significant Unobservable Inputs (Level 3)
Assets:
Short-term investments	0.0
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	1.7
Total liabilities	$ 1.7	$ 1.7	$ 1.7