Variable Interest Entities - Net Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Noncontrolling interest	$ 202	$ 299
Great Valley Solar
Business Acquisition [Line Items]
Assets held for sale	305	0
Non-utility property, less accumulated depreciation	0	275
Other assets	0	37
Total assets	305	312
Liabilities held for sale	20	0
Other liabilities	0	14
Total liabilities	20	14
Accumulated depreciation	35	26
Copper Mountain Solar - Mesquite Solar
Business Acquisition [Line Items]
Assets held for sale	580	0
Non-utility property, less accumulated depreciation	0	431
Other assets	0	167
Total assets	580	598
Liabilities held for sale	81	0
Other liabilities	0	74
Total liabilities	81	74
Accumulated depreciation	59	44
CED Nevada Virginia
Business Acquisition [Line Items]
Assets held for sale	686	0
Non-utility property, less accumulated depreciation	0	643
Other assets	0	55
Total assets	686	698
Liabilities held for sale	331	0
Other liabilities	0	315
Total liabilities	331	315
Accumulated depreciation	29	10
Tax equity investor
Business Acquisition [Line Items]
Noncontrolling interest	39	95
Tax equity investor | Great Valley Solar
Business Acquisition [Line Items]
Noncontrolling interest	67	84
Tax equity investor | Copper Mountain Solar - Mesquite Solar
Business Acquisition [Line Items]
Noncontrolling interest	$ 94	$ 118