Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 0.2	$ (185.8)	$ (221.3)
Other comprehensive (loss) income, net of tax:
Designated hedge (losses) gains	(92.3)	(5.7)	2.2
Defined benefit plan actuarial (losses) gains	(1.1)	0.8	4.7
Foreign currency translation	5.0	(62.3)	54.4
Total other comprehensive (loss) income	(88.4)	(67.2)	61.3
Total comprehensive loss	$ (88.2)	$ (253.0)	$ (160.0)