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Pension and Post-Employment Benefits - Plan Net Pension Credit (Detail) - United Kingdom Plan [Member] $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items] |
Service cost | $ 3.3
Interest cost on PBO | 18.5
Expected return on plan assets | (25.7)
Amortization of prior service credit | 0.5
Amortization of actuarial net losses | 0.0
Net periodic benefit | $ (3.4)

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