CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 2,285	$ 1,463	$ 4,105
Less: Income from discontinued operations, net of income tax	0	0	(1,850)
Income from continuing operations, net of income tax	2,285	1,463	2,255
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,019	1,855	1,666
Deferred income taxes and investment tax credits	392	(78)	159
(Gain) loss on sale of assets	0	(36)	3
Equity earnings	(1,498)	(1,343)	(1,015)
Foreign currency transaction losses, net	24	18	25
Share-based compensation expense	71	63	71
Fixed-price contracts and other derivatives	863	206	(7)
Other	154	170	140
Net change in other working capital components:
Accounts receivable	(976)	(599)	(328)
Due to/from unconsolidated affiliates, net	(31)	(1)	12
Income taxes receivable/payable, net	(29)	(38)	(94)
Inventories	(17)	(87)	(35)
Other current assets	(1,608)	(220)	38
Accounts payable	430	263	74
Regulatory balancing accounts, net	36	249	(231)
Reserve for Aliso Canyon costs	(1,851)	1,532	141
Other current liabilities	228	(105)	(127)
Insurance receivable for Aliso Canyon costs	360	85	(106)
Distributions from investments	854	941	651
Reserve for Aliso Canyon costs, noncurrent	1	0	294
Changes in other noncurrent assets and liabilities, net	(565)	(496)	56
Net cash provided by continuing operations	1,142	3,842	3,642
Net cash used in discontinued operations	0	0	(1,051)
Net cash provided by operating activities	1,142	3,842	2,591
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(5,357)	(5,015)	(4,676)
Expenditures for investments and acquisitions	(376)	(633)	(652)
Proceeds from sale of assets	0	38	19
Distributions from investments		366	761
Purchases of nuclear decommissioning and other trust assets	(700)	(961)	(1,439)
Proceeds from sales of nuclear decommissioning and other trust assets	762	961	1,439
Advances to unconsolidated affiliates	0	(8)	(92)
Repayments of advances to unconsolidated affiliates	626	38	7
Disbursement for note receivable	0	(305)	0
Other	6	11	15
Net cash used in continuing operations	(5,039)	(5,508)	(4,618)
Net cash provided by discontinued operations	0	0	5,171
Net cash (used in) provided by investing activities	(5,039)	(5,508)	553
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(1,430)	(1,331)	(1,174)
Preferred dividends paid	(44)	(99)	(157)
Issuances of preferred stock, net	0	0	891
Issuances of common stock, net	4	5	11
Repurchases of common stock	(478)	(339)	(566)
Issuances of debt (maturities greater than 90 days)	9,984	3,773	6,051
Payments on debt (maturities greater than 90 days) and finance leases	(4,510)	(5,489)	(5,864)
(Decrease) increase in short-term debt, net	(1,266)	1,913	(1,759)
Advances from unconsolidated affiliates	28	40	64
Proceeds from sales of noncontrolling interests, net	1,732	3,206	26
Purchases of noncontrolling interests	0	(224)	(248)
Distributions to noncontrolling interests	(237)	0	0
Contributions from noncontrolling interests	31	4	1
Other	(35)	(199)	(50)
Net cash provided by (used in) continuing operations	3,779	1,260	(2,774)
Net cash provided by discontinued operations	0	0	401
Net cash provided by (used in) financing activities	3,779	1,260	(2,373)
Effect of exchange rate changes in continuing operations	(1)	2	0
Effect of exchange rate changes in discontinued operations	0	0	(3)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(1)	2	(3)
(Decrease) increase in cash and cash equivalents	(119)	(404)	768
Cash, cash equivalents and restricted cash, including discontinued operations, January 1	581	985	217
Cash, cash equivalents and restricted cash, including discontinued operations, December 31	462	581	985
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	1,014	1,163	1,046
Income tax payments, including discontinued operations, net of refunds	284	230	1,385
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Contribution to Cameron LNG JV	0	0	50
Distribution from Cameron LNG JV	0	0	50
Increase in Cameron LNG JV investment for guarantee	0	22	0
Repayment of advances from unconsolidated affiliate in lieu of distribution	32	45	0
Accrued capital expenditures	590	591	535
Increase in finance lease obligations for investment in PP&E	57	43	77
Derecognized PP&E for net investment in sales-type lease	0	44	0
Increase in ARO for investment in PP&E	91	153	142
Equitization of long-term debt for deficit held by NCI	0	0	22
Accrued purchase price adjustment for sale of NCI	0	13	0
Issuance of common stock in exchange for NCI and related AOCI	0	1,373	0
Common dividends issued in stock	0	0	22
Conversion of mandatory convertible preferred stock	0	2,258	0
Common Stock
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends declared but not paid	360	349	301
Preferred stock
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends declared but not paid	$ 11	$ 11	$ 47