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Retirement Benefits - Pretax Amounts Recognized in Accumulated Other Comprehensive Income Loss (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($)
Pension Benefits | U.S. Plans |
Defined Benefit Plan Disclosure [Line Items] |
Net loss in current year | $ (0.9)
Prior service cost | (0.1)
Amortization of prior service credit | 0.0
Amortization of net loss (gain) | 0.1
Exchange rate effect on amounts in other comprehensive income | 0.0
Total | (0.9)
Pension Benefits | Non-U.S. Plans |
Defined Benefit Plan Disclosure [Line Items] |
Net loss in current year | (6.9)
Prior service cost | 0.0
Amortization of prior service credit | (0.1)
Amortization of net loss (gain) | (0.5)
Exchange rate effect on amounts in other comprehensive income | 0.1
Total | (7.4)
Other Benefits |
Defined Benefit Plan Disclosure [Line Items] |
Net loss in current year | (0.4)
Prior service cost | 0.0
Amortization of prior service credit | (0.1)
Amortization of net loss (gain) | (0.9)
Exchange rate effect on amounts in other comprehensive income | 0.0
Total | $ (1.4)

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