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Other Comprehensive Income - Changes in Components of Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Pre-tax | $ 6.9 | $ 29.8
Tax | 0.6 | 0.9
Other comprehensive income | 7.5 | 30.7
Pension and OPEB liability adjustments |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Pre-tax | 1.2 | 1.3
Tax | (0.7) | (2.0)
Other comprehensive income | 0.5 | (0.7)
Derivative instrument adjustments |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Pre-tax | (14.1) | 22.4
Tax | 2.7 | 0.3
Other comprehensive income | (11.4) | 22.7
Unrealized foreign currency translation adjustments |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Pre-tax | 19.8 | 6.1
Tax | (1.4) | 2.6
Other comprehensive income | $ 18.4 | $ 8.7

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