Pension Plans - Net Periodic Pension (Benefit) Cost (Details) - Pension Plans, Defined Benefit - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 5.0	$ 4.7	$ 15.0	$ 14.1
Interest cost	16.4	16.3	49.2	49.0
Expected return on plan assets	(25.5)	(26.1)	(76.3)	(78.4)
Amortization of unrecognized loss	2.3	0.4	6.9	1.1
Net periodic pension benefit	$ (1.8)	$ (4.7)	$ (5.2)	$ (14.2)

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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