Organization and Basis of Presentation (Schedule of Allocated Losses from Subsidiaries, Noncontrolling Interest) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Allocated losses to noncontrolling tax equity members utilizing the HLBV method	$ 24	$ 43
Allocated losses to noncontrolling members based on pro rata shares of ownership	13	8
Total Noncontrolling Interest Allocated Losses	$ 37	$ 51