Income Taxes (Schedule Of Change In Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Pacific Gas And Electric Company [Member]
Balance at beginning of year	$ 349	$ 382	$ 462	$ 707
Additions for tax position taken during a prior year		0	0	40
Reductions for tax position taken during a prior year		(71)	(77)	(349)
Additions for tax position taken during the current year		48	56	64
Settlements		(8)	(59)	0
Expiration of statute	0	3	0
Balance at end of year		349	382	462
PG&E Corporation [Member]
Balance at beginning of year	349	388	468	713
Additions for tax position taken during a prior year		0	0	40
Reductions for tax position taken during a prior year		(71)	(77)	(349)
Additions for tax position taken during the current year		48	56	64
Settlements		(14)	(59)	0
Expiration of statute	$ 0	3	0
Balance at end of year		$ 349	$ 388	$ 468