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Other Comprehensive (Loss) Earnings - Changes in Components of AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension and Postretirement Benefit Plans [Abstract]
Amortization or settlement of actuarial losses and prior service costs	$ 0.9	$ 0.7	$ 0.6
Tax	(0.2)	(0.1)	(0.1)
Net of tax	0.7	0.6	0.5
Cash Flow Hedges [Abstract]
Net (gains) losses reclassified into earnings	(2.1)	(1.2)	0.9
Other Comprehensive Income (Loss) before Reclassifications, Tax		0.3
Tax	0.5		(0.2)
Net of tax	$ (1.6)	$ (0.9)	$ 0.7

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Amount of tax expense (benefit) allocated to other comprehensive income (loss) before reclassification adjustment from accumulated other comprehensive income (loss).

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Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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