Dispositions (Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Current Assets Held for Sale
Total current assets held for sale	$ 14	$ 356
Noncurrent Assets Held for Sale
Total other noncurrent assets held for sale	197	5,634
Current Liabilities Associated with Assets Held for Sale
Total current liabilities associated with assets held for sale	122	535
Noncurrent Liabilities Associated with Assets Held for Sale
Total other noncurrent liabilities associated with assets held for sale	157	1,927
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups
Current Assets Held for Sale
Cash and cash equivalents	0	10
Receivables, net	0	107
Inventory	0	88
Other	14	151
Total current assets held for sale	14	356
Noncurrent Assets Held for Sale
Cost	247	6,444
Accumulated depreciation and amortization	(57)	(1,651)
Net property, plant and equipment	190	4,793
Operating lease right-of-use assets, net	4	140
Investments in equity method unconsolidated affiliates	0	522
Other	3	179
Total other noncurrent assets held for sale	7	841
Total Assets Held for Sale	211	5,990
Current Liabilities Associated with Assets Held for Sale
Accounts payable	9	122
Taxes accrued	3	17
Current maturities of long-term debt	5	276
Unrealized losses on commodity hedges	68	37
Other	37	83
Total current liabilities associated with assets held for sale	122	535
Noncurrent Liabilities Associated with Assets Held for Sale
Long-Term debt	39	1,188
Operating lease liabilities	5	150
Asset retirement obligations	8	190
Unrealized losses on commodity hedges	94	187
Other	11	212
Total other noncurrent liabilities associated with assets held for sale	157	1,927
Total Liabilities Associated with Assets Held for Sale	$ 279	$ 2,462