Long-term Debt - Interest Expense, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Interest expense	$ (566.9)	$ (546.3)	$ (535.9)
Interest income	1.1	0.9	1.4
Capitalized interest	4.1	2.2	0.3
Interest expense, net	(561.7)	(543.2)	$ (534.2)
Coupon interest	9.1	5.7
Amortization of debt discount	12.7	7.3
Amortization of debt issuance costs	0.9	0.5
Convertible Notes interest expense	$ 22.7	$ 13.5