Condensed Consolidated Statements Of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Operating Revenues
Electric	$ 3,517	$ 3,323	$ 9,375	$ 9,026
Natural gas	658	653	2,248	2,184
Total operating revenues	4,175	3,976	11,623	11,210
Operating Expenses
Cost of electricity	1,645	1,283	3,817	3,104
Cost of natural gas	131	118	656	593
Operating and maintenance	1,585	1,344	4,179	4,138
Depreciation, amortization, and decommissioning	523	617	1,542	1,807
Total operating expenses	3,884	3,362	10,194	9,642
Operating Income	291	614	1,429	1,568
Interest income	2	2	6	6
Interest expense	(179)	(178)	(532)	(528)
Other income, net	26	26	78	84
Income Before Income Taxes	140	464	981	1,130
Income tax (benefit) provision	(24)	100	243	291
Net Income	164	364	738	839
Preferred stock dividend requirement of subsidiary	3	3	10	10
Income Available for Common Shareholders	161	361	728	829
Weighted average common shares outstanding, basic	446	428	441	422
Weighted Average Common Shares Outstanding, Diluted	447	429	442	423
Net Earnings Per Common Share, Basic	$ 0.36	$ 0.84	$ 1.65	$ 1.96
Net Earnings Per Common Share, Diluted	$ 0.36	$ 0.84	$ 1.65	$ 1.96
Dividends Declared Per Common Share	$ 0.46	$ 0.46	$ 1.37	$ 1.37
Pacific Gas And Electric Company [Member]
Operating Revenues
Electric	3,517	3,321	9,372	9,022
Natural gas	657	653	2,248	2,184
Total operating revenues	4,174	3,974	11,620	11,206
Operating Expenses
Cost of electricity	1,645	1,283	3,817	3,104
Cost of natural gas	131	118	656	593
Operating and maintenance	1,583	1,343	4,175	4,134
Depreciation, amortization, and decommissioning	523	617	1,542	1,807
Total operating expenses	3,882	3,361	10,190	9,638
Operating Income	292	613	1,430	1,568
Interest income	2	2	6	5
Interest expense	(172)	(172)	(513)	(511)
Other income, net	20	19	66	64
Income Before Income Taxes	142	462	989	1,126
Income tax (benefit) provision	(20)	122	261	328
Net Income	162	340	728	798
Preferred stock dividend requirement	3	3	10	10
Income Available for Common Shareholders	$ 159	$ 337	$ 718	$ 788