Condensed Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Operating Revenues
Electric	$ 3,868	$ 4,012	$ 10,344	$ 10,246
Natural gas	682	927	2,322	2,536
Total operating revenues	4,550	4,939	12,666	12,782
Operating Expenses
Cost of electricity	1,681	1,782	3,958	4,341
Cost of natural gas	50	134	442	694
Operating and maintenance	1,621	1,287	5,028	3,914
Depreciation, amortization, and decommissioning	653	671	1,935	1,766
Total operating expenses	4,005	3,874	11,363	10,715
Operating Income	545	1,065	1,303	2,067
Interest income	2	2	6	7
Interest expense	(194)	(174)	(575)	(547)
Other income, net	24	36	100	98
Income Before Income Taxes	377	929	834	1,625
Income tax provision	67	115	84	310
Net Income	310	814	750	1,315
Preferred stock dividend requirement of subsidiary	3	3	10	10
Income Available for Common Shareholders	$ 307	$ 811	$ 740	$ 1,305
Weighted Average Common Shares Outstanding, Basic	486	472	481	466
Weighted Average Common Shares Outstanding, Diluted	489	474	484	468
Net Earnings Per Common Share, Basic	$ 0.63	$ 1.72	$ 1.54	$ 2.80
Net Earnings Per Common Share, Diluted	0.63	1.71	1.53	2.79
Dividends Declared Per Common Share	$ 0.46	$ 0.46	$ 1.37	$ 1.37
Pacific Gas And Electric Company [Member]
Operating Revenues
Electric	$ 3,868	$ 4,012	$ 10,344	$ 10,244
Natural gas	682	927	2,322	2,536
Total operating revenues	4,550	4,939	12,666	12,780
Operating Expenses
Cost of electricity	1,681	1,782	3,958	4,341
Cost of natural gas	50	134	442	694
Operating and maintenance	1,622	1,293	5,028	3,911
Depreciation, amortization, and decommissioning	653	671	1,935	1,765
Total operating expenses	4,006	3,880	11,363	10,711
Operating Income	544	1,059	1,303	2,069
Interest income	2	1	6	6
Interest expense	(191)	(171)	(567)	(535)
Other income, net	22	19	68	56
Income Before Income Taxes	377	908	810	1,596
Income tax provision	72	115	95	325
Net Income	305	793	715	1,271
Preferred stock dividend requirement	3	3	10	10
Income Available for Common Shareholders	$ 302	$ 790	$ 705	$ 1,261