Dispositions (Balance Sheet) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Current Assets Held for Sale
Total current assets held for sale	$ 390	$ 356
Noncurrent Assets Held for Sale
Total other noncurrent assets held for sale	4,561	5,634
Current Liabilities Associated with Assets Held for Sale
Total current liabilities associated with assets held for sale	575	535
Noncurrent Liabilities Associated with Assets Held for Sale
Total other noncurrent liabilities associated with assets held for sale	1,720	1,927
Discontinued Operations, Held-for-sale | Commercial Renewables
Current Assets Held for Sale
Cash and cash equivalents	28	10
Receivables, net	124	107
Inventory	87	88
Other	151	151
Total current assets held for sale	390	356
Noncurrent Assets Held for Sale
Cost	5,343	6,444
Accumulated depreciation and amortization	(1,651)	(1,651)
Net property, plant and equipment	3,692	4,793
Operating lease right-of-use assets, net	144	140
Investments in equity method unconsolidated affiliates	509	522
Other	216	179
Total other noncurrent assets held for sale	869	841
Total Assets Held for Sale	4,951	5,990
Current Liabilities Associated with Assets Held for Sale
Accounts payable	80	122
Taxes accrued	16	17
Current maturities of long-term debt	277	276
Other	202	120
Total current liabilities associated with assets held for sale	575	535
Noncurrent Liabilities Associated with Assets Held for Sale
Long-Term debt	1,108	1,188
Operating lease liabilities	153	150
Asset retirement obligations	197	190
Other	262	399
Total other noncurrent liabilities associated with assets held for sale	1,720	1,927
Total Liabilities Associated with Assets Held for Sale	$ 2,295	$ 2,462