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Other Comprehensive Income - Changes in Components of Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Pre-tax | $ 18.3 | $ (19.7) | $ 25.2 | $ 10.1
Tax | (3.8) | 11.5 | (3.2) | 12.4
Other comprehensive income (loss) | 14.5 | (8.2) | 22.0 | 22.5
Pension and OPEB liability adjustments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Pre-tax | 0.0 | 1.5 | 1.2 | 2.8
Tax | 0.0 | 1.1 | (0.7) | (0.9)
Other comprehensive income (loss) | 0.0 | 2.6 | 0.5 | 1.9
Derivative instrument adjustments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Pre-tax | 15.1 | 12.5 | 1.0 | 34.9
Tax | (3.8) | (3.5) | (1.1) | (3.2)
Other comprehensive income (loss) | 11.3 | 9.0 | (0.1) | 31.7
Unrealized foreign currency translation adjustments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Pre-tax | 3.2 | (33.7) | 23.0 | (27.6)
Tax | 0.0 | 13.9 | (1.4) | 16.5
Other comprehensive income (loss) | $ 3.2 | $ (19.8) | $ 21.6 | $ (11.1)

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