Schedule I - Condensed Financial Information Of Parent (Schedule Of Condensed Statement Of Cash Flows) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income		$ 1,660	$ 1,407	$ 888
Deferred income taxes and tax credits, net		1,254	1,030	693
Net cash provided by operating activities		5,977	4,409	3,780
Other		23	13	22
Net cash used in investing activities		(5,650)	(5,526)	(5,211)
Proceeds from issuance of long-term debt, net of discount and issuance costs of $3 in 2014		2,713	983	1,123
Repayments of long-term debt		1,445	160	0
Common stock issued		395	822	780
Common stock dividends paid		(1,021)	(921)	(856)
Other		(107)	(44)	(27)
Net cash (used) in financing activities		(55)	1,171	1,403
Net change in cash and cash equivalents		272	54	(28)
Cash and cash equivalents at January 1		177	123	151
Cash and cash equivalents at December 31		449	177	123
Proceeds from issuance of long-term debt, net of premium, discount, and issuance costs		32	17	27
Cash received (paid) for:
Interest, net of amounts capitalized		(790)	(726)	(684)
Income taxes, net		162	231	77
Noncash common stock issuances		(21)	(20)	(21)
Common stock dividends declared but not yet paid		0	(248)	(224)
PG&E Corporation [Member]
Net income		1,646	1,393	874
Stock-based compensation amortization		20	74	66
Equity in earnings of subsidiaries		(1,667)	(1,388)	(852)
Deferred income taxes and tax credits, net		139	11	10
Noncurrent income taxes receivable/payable		0	0	0
Current income taxes receivable/payable		(2)	(1)	5
Other		(75)	(24)	(70)
Net cash provided by operating activities		61	65	33
Investment in subsidiaries		(455)	(835)	(705)
Dividends received from subsidiaries	[1]	784	911	716
Proceeds from tax equity investments		0	0	0
Other		0	0	0
Net cash used in investing activities		329	76	11
Borrowings under revolving credit facilities		132	0	0
Proceeds from issuance of long-term debt, net of discount and issuance costs of $3 in 2014		0	0	0
Repayments of long-term debt		0	0	0
Common stock issued		395	822	780
Common stock dividends paid	[2]	(1,021)	(921)	(856)
Net cash (used) in financing activities		(494)	(99)	(76)
Net change in cash and cash equivalents		(104)	42	(32)
Cash and cash equivalents at January 1		106	64	96
Cash and cash equivalents at December 31		2	106	64
Cash received (paid) for:
Interest, net of amounts capitalized		(9)	(9)	(9)
Income taxes, net		0	(13)	0
Noncash common stock issuances		21	20	21
Common stock dividends declared but not yet paid		$ 0	$ 248	$ 224

[1] Because of its nature as a holding company, PG&E Corporation classifies dividends received from subsidiaries an investing cash flow.

[2] In January of 2016, PG&E Corporation paid a quarterly common stock dividend of $0.455 per share. In April, July and October of 2016, respectively, PG&E Corporation paid quarterly common stock dividends of $0.49 per share. In January, April, July, and October of 2015 and 2014, respectively, PG&E Corporation paid quarterly common stock dividends of $0.455 per share.