Income Taxes (Schedule Of Income Tax Provision) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current, Federal	$ (105)	$ (89)	$ (84)
Current, State	(70)	11	(41)
Deferred, Federal	218	131	396
Deferred, State	16	(76)	78
Tax credits	(4)	(4)	(4)
Income Tax Provision	55	(27)	345
Pacific Gas And Electric Company [Member]
Current, Federal	(105)	(88)	(84)
Current, State	(66)	6	(29)
Deferred, Federal	229	136	426
Deferred, State	16	(69)	75
Tax credits	(4)	(4)	(4)
Income Tax Provision	70	(19)	384
PG&E Corporation [Member]
Income Tax Provision	$ 15	$ 3	$ 39