Investments in Unconsolidated Affiliates (Schedule of Equity (Earnings) Loss from Unconsolidated Affiliates) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Schedule of Equity Method Investments [Line Items]
Equity (earnings) from unconsolidated affiliates	$ (27.2)	$ (20.8)
WAVE [Member]
Schedule of Equity Method Investments [Line Items]
Equity (earnings) from unconsolidated affiliates	(27.4)	(20.8)
Overcast [Member]
Schedule of Equity Method Investments [Line Items]
Equity (earnings) from unconsolidated affiliates	$ 0.2	$ 0.0