Reconciliation of Total Segment Adjusted EBITDA to Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Total segment adjusted EBITDA	$ (52.1)	$ 266.0	$ 161.2	$ 511.0
Interest expense	(54.6)	(56.2)	(106.1)	(109.6)
Depreciation and amortization	(139.1)	(136.5)	(268.7)	(277.3)
Restructuring and acquisition-related costs	(11.3)	(12.2)	(28.9)	(24.3)
Loss on sale of business	0.0	0.0	(1.0)	0.0
Debt refinancing and redemption costs	0.0	(2.4)	(1.5)	(2.4)
Impairment charge	0.0	0.0	(510.0)	0.0
Income (loss) before income taxes	$ (257.1)	$ 58.7	$ (755.0)	$ 97.4