Consolidated and Combined Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 67.9	$ 86.5	$ (310.7)
Other comprehensive income (loss)
Foreign currency translation	19.8	(47.1)	210.1
Defined benefit pension and retiree health benefit plans, net of taxes	28.7	25.4	(9.8)
Other comprehensive income (loss), net of taxes	48.5	(21.7)	200.3
Comprehensive income (loss)	$ 116.4	$ 64.8	$ (110.4)

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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