Dispositions (Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Current Assets Held for Sale
Total current assets held for sale	$ 4	$ 14
Noncurrent Assets Held for Sale
Total other noncurrent assets held for sale	89	197
Current Liabilities Associated with Assets Held for Sale
Total current liabilities associated with assets held for sale	80	122
Noncurrent Liabilities Associated with Assets Held for Sale
Total other noncurrent liabilities associated with assets held for sale	89	157
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups
Current Assets Held for Sale
Other	4	14
Total current assets held for sale	4	14
Noncurrent Assets Held for Sale
Cost	109	247
Accumulated depreciation and amortization	(24)	(57)
Net property, plant and equipment	85	190
Operating lease right-of-use assets, net	4	4
Other	0	3
Total other noncurrent assets held for sale	4	7
Total Assets Held for Sale	93	211
Current Liabilities Associated with Assets Held for Sale
Accounts payable	19	9
Taxes accrued	1	3
Current maturities of long-term debt	43	5
Unrealized losses on commodity hedges	13	68
Other	4	37
Total current liabilities associated with assets held for sale	80	122
Noncurrent Liabilities Associated with Assets Held for Sale
Long-Term debt	0	39
Operating lease liabilities	5	5
Asset retirement obligations	5	8
Unrealized losses on commodity hedges	66	94
Other	13	11
Total other noncurrent liabilities associated with assets held for sale	89	157
Total Liabilities Associated with Assets Held for Sale	$ 169	$ 279