CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Payments to Noncontrolling Interests	$ 16	$ 26
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	947	518
Less: (Income) loss from discontinued operations, net of income tax	(80)	42
Income from continuing operations, net of income tax	867	560
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	412	383
Deferred income taxes and investment tax credits	(243)	24
Equity earnings	(263)	(101)
Foreign currency transaction losses (gains), net	123	(7)
Share-based compensation expense	22	21
Other	124	(7)
Intercompany activities with discontinued operations, net	0	31
Increase (Decrease) in Other Current Assets and Liabilities, Net	(217)	(169)
Insurance receivable for Aliso Canyon costs	(172)	(16)
Changes in other noncurrent assets and liabilities, net	163	(199)
Net cash provided by continuing operations	1,250	858
Net cash provided by discontinued operations	68	93
Net cash provided by operating activities	1,318	951
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(1,010)	(783)
Payments to Acquire Other Investments	86	94
Proceeds from sale of assets	5	327
Purchases of nuclear decommissioning trust assets	(552)	(225)
Proceeds from sales of nuclear decommissioning trust assets	552	225
Advances to unconsolidated affiliates	(30)	0
Repayments of advances to unconsolidated affiliates	0	3
Intercompany activities with discontinued operations, net	(3)	0
Other	8	7
Net cash used in continuing operations	(1,116)	(540)
Net cash used in discontinued operations	(65)	(70)
Net cash used in investing activities	(1,181)	(610)
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(269)	(232)
Preferred dividends paid	(36)	(36)
Issuances of common stock	11	11
Repurchases of common stock	(57)	(14)
Issuances of debt (maturities greater than 90 days)	1,619	304
Payments on debt (maturities greater than 90 days) and finance leases	(1,433)	(837)
Increase (decrease) in short-term debt, net	2,127	497
Advances from unconsolidated affiliates	64	0
Intercompany activities with discontinued operations, net	(2)	(2)
Other	(5)	(1)
Net cash provided by (used in) continuing operations	2,003	(336)
Net cash provided by (used in) discontinued operations	111	(45)
Net cash provided by (used in) financing activities	2,114	(381)
Effect of exchange rate changes in continuing operations	(6)	0
Effect of exchange rate changes in discontinued operations	(8)	1
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(14)	1
Increase (decrease) in cash, cash equivalents and restricted cash, including discontinued operations	2,237	(39)
Cash, cash equivalents and restricted cash, including discontinued operations, January 1	217	246
Cash, cash equivalents and restricted cash, including discontinued operations, March 31	2,454	207
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	263	257
Income tax payments, net of refunds	68	16
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	437	388
Increase in finance lease obligations for investment in property, plant and equipment	20	7
Debt Conversion, Converted Instrument, Amount	22	0
Common dividends issued in stock	14	13
Preferred stock [Member]
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends declared but not paid	36	36
Common Stock [Member]
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends declared but not paid	306	265
San Diego Gas and Electric Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	262	177
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	201	186
Deferred income taxes and investment tax credits	(8)	(28)
Other	(10)	1
Increase (Decrease) in Other Current Assets and Liabilities, Net	(73)	(96)
Changes in other noncurrent assets and liabilities, net	(20)	11
Net cash provided by operating activities	498	443
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(402)	(356)
Purchases of nuclear decommissioning trust assets	(552)	(225)
Proceeds from sales of nuclear decommissioning trust assets	552	225
Net cash used in investing activities	(402)	(356)
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(200)	0
Issuances of debt (maturities greater than 90 days)	400	0
Payments on debt (maturities greater than 90 days) and finance leases	(23)	(22)
Increase (decrease) in short-term debt, net	(80)	(53)
Net cash provided by (used in) financing activities	97	(75)
Increase (decrease) in cash, cash equivalents and restricted cash, including discontinued operations	193	12
Cash, cash equivalents and restricted cash, including discontinued operations, January 1	10	37
Cash, cash equivalents and restricted cash, including discontinued operations, March 31	203	49
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	79	86
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	128	100
Increase in finance lease obligations for investment in property, plant and equipment	4	4
Southern California Gas Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	303	264
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	159	147
Deferred income taxes and investment tax credits	4	(65)
Other	6	5
Increase (Decrease) in Other Current Assets and Liabilities, Net	(343)	(287)
Insurance receivable for Aliso Canyon costs	(172)	(16)
Changes in other noncurrent assets and liabilities, net	114	(246)
Net cash provided by operating activities	757	376
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(388)	(324)
Net cash used in investing activities	(388)	(324)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of debt (maturities greater than 90 days)	649	0
Increase (decrease) in short-term debt, net	(630)	(66)
Other	(9)	(1)
Net cash provided by (used in) financing activities	10	(67)
Increase (decrease) in cash, cash equivalents and restricted cash, including discontinued operations	379	(15)
Cash, cash equivalents and restricted cash, including discontinued operations, January 1	10	18
Cash, cash equivalents and restricted cash, including discontinued operations, March 31	389	3
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	37	26
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	126	163
Increase in finance lease obligations for investment in property, plant and equipment	$ 16	$ 3