CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 162	$ 802	[1],[2]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,158	1,106	[1],[2]
Deferred income taxes and investment tax credits	(289)	302	[1]
Write-off of wildfire regulatory asset	0	351	[2]
Impairment losses	1,304	72	[1],[2]
Equity earnings	(50)	(26)	[1]
Fixed-price contracts and other derivatives	(44)	(142)	[1]
Other	139	18	[1]
Net change in other working capital components	444	229	[1]
Insurance receivable for Aliso Canyon costs	(56)	64	[1]
Changes in other noncurrent assets and liabilities, net	(177)	(72)	[1]
Net cash provided by operating activities	2,591	2,704	[1]
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(2,815)	(2,880)	[1]
Expenditures for investments and acquisitions	(9,921)	(110)	[1]
Proceeds from sale of assets	7	12
Distributions from investments	9	25	[1]
Purchases of nuclear decommissioning trust assets	(703)	(1,082)	[1]
Proceeds from sales of nuclear decommissioning trust assets	703	1,082	[1]
Advances to unconsolidated affiliates	(84)	(321)	[1]
Repayments of advances to unconsolidated affiliates	71	8	[1]
Other	29	6	[1]
Net cash used in investing activities	(12,704)	(3,260)	[1]
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	(645)	(561)	[1]
Preferred dividends paid	(53)	0	[1]
Preferred dividends paid by subsidiary	(1)	(1)	[1]
Issuances of mandatory convertible preferred stock, net of $41 in offering costs	2,259	0	[1]
Issuances of common stock, net of $41 in offering costs in 2018	2,261	37	[1]
Repurchases of common stock	(20)	(15)	[1]
Issuances of debt (maturities greater than 90 days)	8,628	2,395	[1]
Payments on debt (maturities greater than 90 days)	(2,967)	(1,829)	[1]
Increase (decrease) in short-term debt, net	707	475	[1]
Proceeds from sales of noncontrolling interest, net of $1 in offering costs	90	0	[1]
Net distributions to noncontrolling interests	(101)	(109)	[1]
Settlement of cross-currency swaps	(33)	0	[1]
Other	(80)	(11)	[1]
Net cash provided by (used in) financing activities	10,045	381	[1]
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(8)	11	[1]
Decrease in cash, cash equivalents and restricted cash	(76)	(164)	[1]
Cash, cash equivalents and restricted cash beginning balance	364	425	[1]
Cash, cash equivalents and restricted cash ending balance	288	261	[1]
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	584	414	[1]
Income tax payments, net of refunds	120	126	[1]
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Assets acquired	9,670	0	[1]
Liabilities assumed	(104)	0	[1]
Cash paid	9,566	0	[1]
Accrued capital expenditures	424	476	[1]
Accrued Merger-related transaction and financing costs	0	21	[1]
Increase in capital lease obligations for investment in property, plant and equipment	9	502	[1]
Equitization of note receivable due from unconsolidated affiliate	0	19	[1]
Common dividends issued in stock	41	40	[1]
Preferred stock [Member]
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends declared but not paid	36	0	[1]
Common Stock [Member]
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Dividends declared but not paid	252	214	[1]
San Diego Gas and Electric Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	531	291	[1],[2]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	509	499	[2]
Deferred income taxes and investment tax credits	88	(5)	[1]
Write-off of wildfire regulatory asset	0	351	[1]
Fixed-price contracts and other derivatives	(1)	(1)	[1]
Other	(30)	(31)	[1]
Net change in other working capital components	150	78	[1]
Changes in other noncurrent assets and liabilities, net	(16)	(10)	[1]
Net cash provided by operating activities	1,231	1,172	[1]
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(1,194)	(1,122)	[1]
Purchases of nuclear decommissioning trust assets	(703)	(1,082)	[1]
Proceeds from sales by nuclear decommissioning trusts	703	1,082	[1]
(Increase) decrease in loans to affiliate, net	0	31	[1]
Other	0	6	[1]
Net cash used in investing activities	(1,194)	(1,085)	[1]
CASH FLOWS FROM FINANCING ACTIVITIES
Common dividends paid	0	(450)	[1]
Issuances of debt (maturities greater than 90 days)	398	398	[1]
Payments on debt (maturities greater than 90 days)	(204)	(183)	[1]
Increase (decrease) in short-term debt, net	(205)	185	[1]
Capital distributions made by VIE, net	(8)	(20)	[1]
Debt issuance costs	(3)	(4)	[1]
Net cash provided by (used in) financing activities	(22)	(74)	[1]
Increase in cash, cash equivalents and restricted cash	15	13	[1]
Cash, cash equivalents and restricted cash beginning balance	29	20	[1]
Cash, cash equivalents and restricted cash ending balance	44	33	[1]
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	139	134	[1]
Income tax payments, net of refunds	79	13	[1]
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	113	135	[1]
Increase in capital lease obligations for investment in property, plant and equipment	0	500	[1]
Dividends declared but not paid	250	0	[1]
Southern California Gas Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	245	269	[2]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	414	384	[2]
Deferred income taxes and investment tax credits	70	86	[1]
Other	(4)	(22)	[1]
Net change in other working capital components	391	359	[1]
Insurance receivable for Aliso Canyon costs	(56)	64	[1]
Changes in other noncurrent assets and liabilities, net	(178)	(74)	[1]
Net cash provided by operating activities	882	1,066	[1]
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(1,127)	(1,033)	[1]
(Increase) decrease in loans to affiliate, net	(88)	0	[1]
Other	6	0	[1]
Net cash used in investing activities	(1,209)	(1,033)	[1]
CASH FLOWS FROM FINANCING ACTIVITIES
Preferred dividends paid by subsidiary	(1)	(1)	[1]
Issuances of debt (maturities greater than 90 days)	949	0	[1]
Payments on debt (maturities greater than 90 days)	(500)	0	[1]
Increase (decrease) in short-term debt, net	(116)	(36)	[1]
Debt issuance costs	(9)	0	[1]
Net cash provided by (used in) financing activities	323	(37)	[1]
Increase (decrease) in cash and cash equivalents	(4)	(4)	[1]
Cash, cash equivalents and restricted cash beginning balance	8	12	[1]
Cash, cash equivalents and restricted cash ending balance	4	8	[1]
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Interest payments, net of amounts capitalized	71	65	[1]
Income tax payments, net of refunds	(1)	22	[1]
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued capital expenditures	178	148	[1]
Increase in capital lease obligations for investment in property, plant and equipment	7	1	[1]
Dividends declared but not paid	$ 50	$ 0	[1]

[1] As adjusted for the retrospective adoption of ASU 2016-15 and ASU 2016-18, which we discuss in Note 2.

[2] As adjusted for the retrospective adoption of ASU 2017-07, which we discuss in Note 2, and a reclassification to conform to current year presentation, which we discuss in Note 1.