CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 16.4	$ 11.8
Reclassification of amounts recognized in the condensed consolidated statements of operations:
Amortization of adjustments to pension and other postretirement benefit liabilities (Note 5)	1.6	1.7
Unrealized foreign currency translation loss	(4.0)	(3.2)
Loss from other comprehensive income items	(2.4)	(1.5)
Provision for income taxes	0.2	0.2
Other comprehensive loss	(2.6)	(1.7)
Comprehensive income	$ 13.8	$ 10.1

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount before tax of other comprehensive income (loss) attributable to parent entity.

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