CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,463	$ 4,105	$ 2,362
Less: Income from discontinued operations, net of income tax	0	(1,850)	(363)
Income from continuing operations, net of income tax	1,463	2,255	1,999
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,855	1,666	1,569
Deferred income taxes and investment tax credits	(78)	159	189
Impairment losses	3	1	43
(Gain) loss on sale of assets	(36)	3	(63)
Equity earnings	1,343	1,015	580
Foreign currency transaction losses (gains), net	18	25	(21)
Share-based compensation expense	63	71	75
Fixed-price contracts and other derivatives	206	(7)	(11)
Other	167	139	58
Net change in other working capital components:
Accounts receivable	(599)	(328)	(97)
Due to/from unconsolidated affiliates, net	(1)	12	1
Income taxes receivable/payable, net	(38)	(94)	(166)
Inventories	(87)	(35)	(22)
Other current assets	(220)	38	(88)
Accounts payable	263	74	17
Regulatory balancing accounts, net	249	(231)	13
Reserve for Aliso Canyon costs	1,532	141	(144)
Other current liabilities	(105)	(127)	(99)
Intercompany activities with discontinued operations, net	0	0	378
Insurance receivable for Aliso Canyon costs	85	(106)	122
Distributions from investments	941	651	247
Wildfire fund, current and noncurrent	0	0	(323)
Reserve for Aliso Canyon costs, noncurrent	0	294	0
Changes in other noncurrent assets and liabilities, net	(496)	56	(399)
Net cash provided by continuing operations	3,842	3,642	2,698
Net cash (used in) provided by discontinued operations	0	(1,051)	390
Net cash provided by operating activities	3,842	2,591	3,088
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(5,015)	(4,676)	(3,708)
Expenditures for investments and acquisitions	(633)	(652)	(1,797)
Proceeds from sale of assets	38	19	899
Distributions from investments	366	761	9
Purchases of nuclear decommissioning trust assets	(961)	(1,439)	(914)
Proceeds from sales of nuclear decommissioning trust assets	961	1,439	914
Advances to unconsolidated affiliates	(8)	(92)	(16)
Repayments of advances to unconsolidated affiliates	38	7	3
Disbursement for note receivable	(305)	0	0
Intercompany activities with discontinued operations, net	0	0	8
Other	11	15	21
Net cash used in continuing operations	(5,508)	(4,618)	(4,581)
Net cash provided by (used in) discontinued operations	0	5,171	(12)
Net cash (used in) provided by investing activities	(5,508)	553	(4,593)
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(1,331)	(1,174)	(993)
Preferred dividends paid	(99)	(157)	(142)
Proceeds from Issuance of Preferred Stock and Preference Stock	0	891	0
Issuances of common stock, net	5	11	1,830
Repurchases of common stock	(339)	(566)	(26)
Issuances of debt (maturities greater than 90 days)	3,773	6,051	4,296
Payments on debt (maturities greater than 90 days) and finance leases	(5,489)	(5,864)	(3,667)
Increase (decrease) in short-term debt, net	1,913	(1,759)	656
Advances from unconsolidated affiliates	40	64	155
Purchases of noncontrolling interests	(224)	(248)	(30)
Proceeds from sales of noncontrolling interests, net	3,206	26	5
Proceeds from (Payments to) Noncontrolling Interests	4	1	98
Intercompany activities with discontinued operations, net	0	0	(266)
Other	(199)	(50)	(49)
Net cash provided by continuing operations	1,260	(2,774)	1,867
Net cash (used in) provided by discontinued operations	0	401	(392)
Net cash provided by financing activities	1,260	(2,373)	1,475
Effect of exchange rate changes in continuing operations	2	0	0
Effect of exchange rate changes in discontinued operations	0	(3)	1
Effect of exchange rate changes on cash, cash equivalents and restricted cash	2	(3)	1
Increase (decrease) in cash and cash equivalents	(404)	768	(29)
Cash, cash equivalents and restricted cash, including discontinued operations, January 1	985	217	246
Cash, cash equivalents and restricted cash, including discontinued operations, December 31	581	985	217
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	1,163	1,046	1,051
Income tax payments (refunds), net	230	1,385	360
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued commercial paper proceeds	0	0	67
Accrued interest receivable from unconsolidated affiliate	0	0	55
Contribution to Cameron LNG JV	0	50	0
Distribution from Cameron LNG JV	0	50	0
Increase in Cameron LNG JV investment for guarantee	22	0	0
Repayment of advances from unconsolidated affiliate in lieu of distribution	45	0	0
Accrued capital expenditures	591	535	515
Increase in finance lease obligations for investment in PP&E	43	77	38
Derecognized PP&E for net investment in sales-type lease	44	0	0
Increase in ARO for investment in PP&E	153	142	36
Equitization of long-term debt for deficit held by NCI	0	22	0
Accrued purchase price adjustment for sale of NCI	13	0	0
Issuance of common stock in exchange for NCI and related AOCI	1,373	0	0
Common dividends issued in stock	0	22	55
Conversion of mandatory convertible preferred stock	2,258	0	0
Common Stock
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends declared but not paid	349	301	283
Preferred stock
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends declared but not paid	$ 11	$ 47	$ 36