CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 3,673	$ 1,862
Less: Income from discontinued operations, net of income tax	(1,850)	(292)
Income from continuing operations, net of income tax	1,823	1,570
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,242	1,174
Deferred income taxes and investment tax credits	(12)	12
Impairment losses	1	43
Gain on sale of assets	0	(63)
Equity earnings	(822)	(485)
Foreign currency transaction losses, net	95	2
Share-based compensation expense	57	56
Other	131	2
Intercompany activities with discontinued operations, net	0	184
Net change in other working capital components	(137)	(200)
Distributions from investments	429	163
Insurance receivable for Aliso Canyon costs	(165)	107
Wildfire fund, current and noncurrent	0	(323)
Changes in other noncurrent assets and liabilities, net	38	(413)
Net cash provided by continuing operations	2,680	1,829
Net cash (used in) provided by discontinued operations	(1,051)	289
Net cash provided by operating activities	1,629	2,118
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(3,313)	(2,590)
Expenditures for investments and acquisitions	(229)	(1,449)
Proceeds from sale of assets	22	899
Distributions from investments	761	9
Purchases of nuclear decommissioning trust assets	(1,091)	(728)
Proceeds from sales of nuclear decommissioning trust assets	1,091	728
Advances to unconsolidated affiliates	(32)	(16)
Repayments of advances to unconsolidated affiliates	7	12
Intercompany activities with discontinued operations, net	0	(257)
Other	13	16
Net cash used in continuing operations	(2,771)	(3,376)
Net cash provided by (used in) discontinued operations	5,186	(63)
Net cash provided by (used in) investing activities	2,415	(3,439)
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(872)	(734)
Preferred dividends paid	(107)	(107)
Issuances of preferred stock	890	0
Issuances of common stock	10	757
Repurchases of common stock	(565)	(23)
Issuances of debt (maturities greater than 90 days)	5,934	3,269
Payments on debt (maturities greater than 90 days) and finance leases	(4,387)	(2,500)
(Decrease) increase in short-term debt, net	(1,871)	888
Advances from unconsolidated affiliates	64	0
Purchases of noncontrolling interests	(178)	(30)
Contributions from noncontrolling interests, net of distributions	0	171
Intercompany activities with discontinued operations, net	0	(128)
Other	(29)	(37)
Net cash (used in) provided by continuing operations	(1,111)	1,526
Net cash provided by discontinued operations	401	49
Net cash (used in) provided by financing activities	(710)	1,575
Effect of exchange rate changes in continuing operations	(2)	0
Effect of exchange rate changes in discontinued operations	(3)	(3)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(5)	(3)
Increase in cash, cash equivalents and restricted cash, including discontinued operations	3,329	251
Cash, cash equivalents and restricted cash, including discontinued operations, January 1	217	246
Cash, cash equivalents and restricted cash, including discontinued operations, September 30	3,546	497
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	781	766
Income tax payments, including discontinued operations, net of refunds	1,376	372
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued interest receivable from unconsolidated affiliate	0	55
Accrued capital expenditures	460	390
Increase in finance lease obligations for investment in property, plant and equipment	72	27
Equitization of long-term debt for deficit held by NCI	22	0
Contribution to Cameron LNG JV	50	0
Distribution from Cameron LNG JV	50	0
Common dividends receivable from discontinued operation	0	422
Common dividends issued in stock	23	41
Preferred stock [Member]
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends declared but not paid	50	36
Common Stock [Member]
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends declared but not paid	301	272
San Diego Gas and Electric Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	633	589
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	598	571
Deferred income taxes and investment tax credits	36	(20)
Other	13	7
Net change in other working capital components	(184)	(60)
Wildfire fund, current and noncurrent	0	(323)
Changes in other noncurrent assets and liabilities, net	(113)	(10)
Net cash provided by operating activities	983	754
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(1,323)	(1,071)
Decrease in cash from deconsolidation of Otay Mesa VIE	0	(8)
Purchases of nuclear decommissioning trust assets	(1,091)	(728)
Proceeds from sales of nuclear decommissioning trust assets	1,091	728
Increase in loans to affiliate, net	0	(25)
Other	8	7
Net cash provided by (used in) investing activities	(1,315)	(1,097)
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(200)	0
Equity contribution from Sempra Energy	0	322
Issuances of debt (maturities greater than 90 days)	1,598	400
Payments on debt (maturities greater than 90 days) and finance leases	(252)	(269)
(Decrease) increase in short-term debt, net	(80)	(291)
Contributions from noncontrolling interests, net of distributions	0	172
Debt issuance costs	(11)	(4)
Net cash (used in) provided by financing activities	1,055	330
Increase in cash, cash equivalents and restricted cash, including discontinued operations	723	(13)
Cash, cash equivalents and restricted cash, including discontinued operations, January 1	10	37
Cash, cash equivalents and restricted cash, including discontinued operations, September 30	733	24
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	276	285
Income tax payments, including discontinued operations, net of refunds	20	131
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	184	117
Increase in finance lease obligations for investment in property, plant and equipment	26	12
Southern California Gas Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	426	438
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	486	449
Deferred income taxes and investment tax credits	(38)	(79)
Impairment losses	0	37
Other	42	(5)
Net change in other working capital components	513	194
Insurance receivable for Aliso Canyon costs	(165)	107
Changes in other noncurrent assets and liabilities, net	124	(328)
Net cash provided by operating activities	1,388	813
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(1,345)	(1,019)
Other	0	1
Net cash provided by (used in) investing activities	(1,345)	(1,018)
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(50)	0
Preferred dividends paid	(1)	(1)
Issuances of debt (maturities greater than 90 days)	949	349
(Decrease) increase in short-term debt, net	(630)	(148)
Payments on finance leases	(9)	(4)
Debt issuance costs	(8)	(4)
Net cash (used in) provided by financing activities	251	192
Increase in cash, cash equivalents and restricted cash, including discontinued operations	294	(13)
Cash, cash equivalents and restricted cash, including discontinued operations, January 1	10	18
Cash, cash equivalents and restricted cash, including discontinued operations, September 30	304	5
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	114	92
Income tax payments, including discontinued operations, net of refunds	1	115
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	146	167
Increase in finance lease obligations for investment in property, plant and equipment	46	15
Dividends declared but not paid	$ 50	$ 150