Investment in Unconsolidated Affiliate Summarized Income Statement of Equity Method Investment (Details) - USD ($) $ in Millions	11 Months Ended	12 Months Ended
	Dec. 02, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Summarized Financial Information, Operating Income	$ 634.0		$ 465.0	$ 569.0
Operating revenues		$ 3,653.7	2,122.3	2,231.6
Net income (loss)		$ 737.3	(173.7)	433.6
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Equity Method Investments [Line Items]
Operating revenues	3,466.0		2,463.0	2,960.0
Cost of Revenue	1,959.0		965.0	1,279.0
Net income (loss)	$ 461.0		$ 52.0	$ 360.0