Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (100.8)	$ 6.3	$ (155.9)	$ (14.6)
Other comprehensive loss, net of tax:
Designated hedge losses	(9.7)	(55.9)	(99.0)	(83.3)
Defined benefit plan actuarial gain	0.0	0.1	2.0	0.0
Foreign currency translation	45.1	(5.8)	(21.6)	1.5
Total other comprehensive income (loss)	35.4	(61.6)	(118.6)	(81.8)
Total comprehensive loss	$ (65.4)	$ (55.3)	$ (274.5)	$ (96.4)