Dispositions (Balance Sheet) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current Assets Held for Sale
Total current assets held for sale	$ 374	$ 356
Noncurrent Assets Held for Sale
Total other noncurrent assets held for sale	5,538	5,634
Current Liabilities Associated with Assets Held for Sale
Total current liabilities associated with assets held for sale	476	535
Noncurrent Liabilities Associated with Assets Held for Sale
Total other noncurrent liabilities associated with assets held for sale	1,931	1,927
Discontinued Operations, Held-for-sale | Commercial Renewables
Current Assets Held for Sale
Cash and cash equivalents	12	10
Receivables, net	114	107
Inventory	81	88
Other	167	151
Total current assets held for sale	374	356
Noncurrent Assets Held for Sale
Cost	6,334	6,444
Accumulated depreciation and amortization	(1,651)	(1,651)
Net property, plant and equipment	4,683	4,793
Operating lease right-of-use assets, net	142	140
Investments in equity method unconsolidated affiliates	512	522
Other	201	179
Total other noncurrent assets held for sale	855	841
Total Assets Held for Sale	5,912	5,990
Current Liabilities Associated with Assets Held for Sale
Accounts payable	80	122
Taxes accrued	9	17
Current maturities of long-term debt	275	276
Other	112	120
Total current liabilities associated with assets held for sale	476	535
Noncurrent Liabilities Associated with Assets Held for Sale
Long-Term debt	1,184	1,188
Operating lease liabilities	150	150
Asset retirement obligations	196	190
Other	401	399
Total other noncurrent liabilities associated with assets held for sale	1,931	1,927
Total Liabilities Associated with Assets Held for Sale	$ 2,407	$ 2,462