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Other Comprehensive (Loss) Earnings - Changes in Components of AOCI (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Pension and Postretirement Benefit Plans [Abstract] |  |  |
Amortization or settlement of actuarial losses and prior service costs | $ 0.6 | $ 0.6 | $ 0.5
Tax benefit | (0.1) | 0.0 | 0.0
Net of tax | 0.5 | 0.6 | 0.5
Cash Flow Hedges [Abstract] |  |  |
Net losses reclassified into earnings | 1.4 | 0.5 | 1.0
Tax benefit | (0.3) | (0.2) | (0.1)
Net of tax | $ 1.1 | $ 0.3 | $ 0.9

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