Income Taxes (Schedule Of Change In Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pacific Gas And Electric Company [Member]
Balance at beginning of year	$ 707	$ 660	$ 575
Additions for tax position taken during a prior year	40	7	12
Reductions for tax position taken during a prior year	(349)	(9)	(6)
Additions for tax position taken during the current year	64	61	79
Settlements	0	(12)	0
Balance at end of year	462	707	660
PG&E Corporation [Member]
Balance at beginning of year	713	666	581
Additions for tax position taken during a prior year	40	7	12
Reductions for tax position taken during a prior year	(349)	(9)	(6)
Additions for tax position taken during the current year	64	61	79
Settlements	0	(12)	0
Balance at end of year	$ 468	$ 713	$ 666