Investments in and Advances to Unconsolidated Affiliates - Affiliate Income Statement (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments in and Advances to Affiliates [Line Items]
Net revenue	$ 572.5			$ 383.1			$ 1,900.5	$ 1,329.7
Operating and SG&A expense	50.2			38.4			150.6	112.7
Operating income	112.3			63.0			457.8	310.1
Interest and other, net	(67.9)			(36.2)			(197.8)	(92.6)
Net income	61.0	$ 143.0	$ 155.7	57.0	$ 339.3	$ 42.1	359.7	438.4
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Investments in and Advances to Affiliates [Line Items]
Net revenue	208.9			221.5			648.2	613.3
Operating and SG&A expense	135.1			131.5			407.3	380.4
Depreciation and amortization	5.9			5.9			17.5	17.5
Total operating expense	141.0			137.4			424.8	397.9
Operating income	67.9			84.1			223.4	215.4
Interest and other, net	(11.1)			(10.6)			(32.7)	(13.8)
Net income	$ 56.8			$ 73.5			$ 190.7	$ 201.6