Condensed Consolidated Statements Of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating Revenues
Electric	$ 3,463	$ 3,233	$ 6,476	$ 6,234
Natural gas	754	719	1,640	1,609
Total operating revenues	4,217	3,952	8,116	7,843
Operating Expenses
Cost of electricity	1,277	1,349	2,277	2,559
Cost of natural gas	118	200	392	560
Operating and maintenance	1,484	1,328	3,407	2,627
Depreciation, amortization, and decommissioning	651	557	1,282	1,095
Total operating expenses	3,530	3,434	7,358	6,841
Operating Income	687	518	758	1,002
Interest income	3	2	4	5
Interest expense	(192)	(188)	(381)	(373)
Other income, net	18	43	76	62
Income Before Income Taxes	516	375	457	696
Income tax provision	110	104	17	195
Net Income	406	271	440	501
Preferred stock dividend requirement of subsidiary	4	4	7	7
Income Available for Common Shareholders	$ 402	$ 267	$ 433	$ 494
Weighted Average Common Shares Outstanding, Basic	480	467	479	463
Weighted Average Common Shares Outstanding, Diluted	483	469	483	465
Net Earnings Per Common Share, Basic	$ 0.84	$ 0.57	$ 0.90	$ 1.07
Net Earnings Per Common Share, Diluted	0.83	0.57	0.90	1.06
Dividends Declared Per Common Share	$ 0.46	$ 0.46	$ 0.91	$ 0.91
Pacific Gas And Electric Company [Member]
Operating Revenues
Electric	$ 3,462	$ 3,232	$ 6,476	$ 6,232
Natural gas	754	719	1,640	1,609
Total operating revenues	4,216	3,951	8,116	7,841
Operating Expenses
Cost of electricity	1,277	1,349	2,277	2,559
Cost of natural gas	118	200	392	560
Operating and maintenance	1,483	1,321	3,406	2,618
Depreciation, amortization, and decommissioning	651	556	1,282	1,094
Total operating expenses	3,529	3,426	7,357	6,831
Operating Income	687	525	759	1,010
Interest income	3	3	4	5
Interest expense	(189)	(185)	(376)	(364)
Other income, net	20	17	46	37
Income Before Income Taxes	521	360	433	688
Income tax provision	115	110	23	210
Net Income	406	250	410	478
Preferred stock dividend requirement	4	4	7	7
Income Available for Common Shareholders	$ 402	$ 246	$ 403	$ 471