Equity Method Investments (Income Statement) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Total revenues	$ 17,886.3	$ 11,946.0	$ 11,500.5
Gross loss	5,575.5	3,796.7	3,897.6
Operating and non-operating expense	(664.4)	(721.2)	154.4
Net loss	(1,269.1)	(669.9)	16.8
Consolidated Entity
Schedule of Equity Method Investments [Line Items]
Total revenues	326.7	374.5	385.0
Gross loss	(4.6)	(4.6)	(4.4)
Operating and non-operating expense	16.8	19.0	20.0
Net loss	$ (21.4)	$ (23.6)	$ (24.4)