Equity Method Investments (Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Schedule of Equity Method Investments [Line Items]
Revenues	$ 4,430.3	$ 2,619.2
Gross loss	1,127.3	906.1
Operating and non-operating expense	(441.3)	30.7
Consolidated Entity
Schedule of Equity Method Investments [Line Items]
Revenues	109.5	87.5
Gross loss	(1.4)	(1.1)
Operating and non-operating expense	4.9	4.7
Net loss	$ (6.3)	$ (5.8)