CONSOLIDATED STATEMENTS OF CASH FLOWS - SDG&E - 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
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes and investment tax credits	(78)	159	189
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
Other current liabilities	(105)	(127)	(99)
Wildfire fund, current and noncurrent	0	0	(323)
Changes in other noncurrent assets and liabilities, net	(496)	56	(399)
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)
Purchases of nuclear decommissioning trust assets	(961)	(1,439)	(914)
Proceeds from sales of nuclear decommissioning trust assets	961	1,439	914
Other	11	15	21
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)
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
Proceeds from sales of noncontrolling interests, net	3,206	26	5
Net cash provided by financing activities	1,260	(2,373)	1,475
Increase (decrease) in cash and cash equivalents	(404)	768	(29)
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 capital expenditures	591	535	515
Increase in finance lease obligations for investment in PP&E	43	77	38
Increase in ARO for investment in PP&E	153	142	36
San Diego Gas and Electric Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	819	824	774
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	889	801	760
Deferred income taxes and investment tax credits	153	35	105
Other	(14)	27	13
Net change in other working capital components:
Accounts receivable	(105)	(134)	(15)
Due to/from unconsolidated affiliates, net	33	11	(8)
Income taxes receivable/payable, net	(20)	129	(126)
Inventories	(19)	(10)	4
Other current assets	0	4	(19)
Accounts payable	7	31	32
Regulatory balancing accounts, net	(57)	(71)	(101)
Other current liabilities	(92)	(100)	4
Wildfire fund, current and noncurrent	0	0	(323)
Changes in other noncurrent assets and liabilities, net	(218)	(158)	(10)
Net cash provided by operating activities	1,376	1,389	1,090
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(2,220)	(1,942)	(1,522)
Purchases of nuclear decommissioning trust assets	(961)	(1,439)	(914)
Proceeds from sales of nuclear decommissioning trust assets	961	1,439	914
Other	7	8	0
Net cash (used in) provided by investing activities	(2,213)	(1,934)	(1,522)
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(300)	(200)	0
Equity contribution from Sempra Energy	0	0	322
Issuances of debt (maturities greater than 90 days)	1,120	1,598	400
Payments on debt (maturities greater than 90 days) and finance leases	(613)	(510)	(274)
Increase (decrease) in short-term debt, net	401	(80)	(211)
Proceeds from sales of noncontrolling interests, net	0	0	172
Debt issuance costs	(8)	(11)	(4)
Net cash provided by financing activities	600	797	405
Increase (decrease) in cash and cash equivalents	(237)	252	(27)
Cash and cash equivalents, January 1	262	10	37
Cash and cash equivalents, December 31	25	262	10
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	402	404	405
Income tax payments (refunds), net	67	25	191
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	228	199	174
Increase in finance lease obligations for investment in PP&E	24	30	16
Increase in ARO for investment in PP&E	$ 14	$ 31	$ (1)