Income Taxes (Schedule Of Change In Unrecognized Tax Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pacific Gas And Electric Company [Member]
Balance at beginning of year	$ 660	$ 575	$ 503
Additions for tax position taken during a prior year	7	12	26
Reductions for tax position taken during a prior year	(9)	(6)	(10)
Additions for tax position taken during the current year	61	79	67
Settlements	(12)	0	(11)
Balance at end of year	707	660	575
Pg E Corporation [Member]
Balance at beginning of year	666	581	506
Additions for tax position taken during a prior year	7	12	32
Reductions for tax position taken during a prior year	(9)	(6)	(13)
Additions for tax position taken during the current year	61	79	67
Settlements	(12)	0	(11)
Balance at end of year	$ 713	$ 666	$ 581