Investment in Unconsolidated Affiliates Reconciliation of Equity in Earnings of Unconsolidated Affiliates (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Line Items]
Proceeds from Equity Method Investment, Distribution		$ 13.3				$ 30.0
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest				25.50%			25.50%
Proportionate Unconsolidated Affiliate Net Income				$ 20.0			$ 59.5
Equity in Earnings Amortization of Basis Difference	[1]			13.5			27.2
Income (Loss) from Equity Method Investments, Total		0.0		33.5		0.0	86.7
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 73.1	$ 279.5	112.9	$ 52.7	$ 352.6	165.6
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest				$ 79.0			$ 234.0

[1] Includes loss on dilution, net of proportional basis difference recognition.