Condensed Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$ 164	$ 364	$ 738	$ 839
Other Comprehensive Income
Amortization of prior service cost (net of taxes of $5, $5, $14, and $15, at respective dates)	6	7	18	19
Amortization of actuarial loss (net of taxes of $11, $12, $35, and $38 for PG&E Corporation, at respective dates, and net of taxes of $11, $12, $34, and $38 for the Utility, at respective dates)	18	18	52	58
Amortization of transition obligation (net of taxes of $0, $2, $0, and $6, at respective dates)	0	4	0	12
Transfer to regulatory account (net of taxes of $13, $14, $39, and $44, at repsective dates)	(20)	(21)	(58)	(63)
Gain (loss) on investments (net of taxes of $2, $0, $13, and $0, at respective dates)	(3)	0	19	0
Total other comprehensive income	1	8	31	26
Comprehensive Income	165	372	769	865
Preferred stock dividend requirement of subsidiary	3	3	10	10
Comprehensive Income Attributable to Common Shareholders	162	369	759	855
Pacific Gas And Electric Company [Member]
Net income	162	340	728	798
Other Comprehensive Income
Amortization of prior service cost (net of taxes of $5, $5, $14, and $15, at respective dates)	6	7	18	19
Amortization of actuarial loss (net of taxes of $11, $12, $35, and $38 for PG&E Corporation, at respective dates, and net of taxes of $11, $12, $34, and $38 for the Utility, at respective dates)	18	18	53	58
Amortization of transition obligation (net of taxes of $0, $2, $0, and $6, at respective dates)	0	4	0	12
Transfer to regulatory account (net of taxes of $13, $14, $39, and $44, at repsective dates)	(20)	(21)	(58)	(63)
Total other comprehensive income	4	8	13	26
Comprehensive Income	$ 166	$ 348	$ 741	$ 824