Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Comprehensive loss:
Net loss	$ (116.3)	$ (156.5)	$ (597.3)	$ (492.8)
Other comprehensive income (loss), net of tax:
Foreign currency translation gain (loss)	63.7	(76.6)	(1.3)	(76.5)
Pension and other postretirement benefit activity	(0.1)	(0.1)	(0.6)	(0.2)
Gain (loss) on hedging instruments	(9.0)	7.9	(21.9)	(4.0)
Total other comprehensive income (loss), net of tax	54.6	(68.8)	(23.8)	(80.7)
Total comprehensive loss	$ (61.7)	$ (225.3)	$ (621.1)	$ (573.5)