Condensed Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net income	$ 332	$ 239	$ 574	$ 475
Other Comprehensive Income, net of income tax
Unrecognized prior service credit	6	6	12	12
Unrecognized net gain	17	19	34	40
Unrecognized net transition obligation	0	4	0	8
Transfer to regulatory account	(19)	(21)	(38)	(42)
Other investments	16	0	22	0
Total other comprehensive income, net of income tax	20	8	30	18
Comprehensive Income	352	247	604	493
Preferred stock dividend requirement of subsidiary	4	4	7	7
Comprehensive Income Attributable to Common Shareholders	348	243	597	486
Pacific Gas And Electric Company [Member]
Net income	329	227	566	458
Other Comprehensive Income, net of income tax
Unrecognized prior service credit	6	6	12	12
Unrecognized net gain	17	19	35	40
Unrecognized net transition obligation	0	4	0	8
Transfer to regulatory account	(19)	(21)	(38)	(42)
Total other comprehensive income, net of income tax	4	8	9	18
Comprehensive Income	$ 333	$ 235	$ 575	$ 476