Investment in Unconsolidated Affiliates Reconciliation of Equity in Earnings of Unconsolidated Affiliates (Details) - USD ($) $ in Millions		3 Months Ended						9 Months Ended
		Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Line Items]
Proceeds from Equity Method Investment, Distribution		$ 4.0						$ 34.0
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest					25.50%				25.50%
Proportionate Unconsolidated Affiliate Net Income					$ 27.5				$ 87.0
Equity in Earnings Amortization of Basis Difference	[1]				13.7				40.9
Income (Loss) from Equity Method Investments, Total		0.0			41.2			0.0	127.9
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 262.8	$ 73.1	$ 279.5	252.5	$ 112.9	$ 52.7	$ 615.4	418.1
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					$ 107.0				$ 341.0

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