Schedule I - Condensed Financial Information Of Parent (Schedule Of Condensed Income Statement) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating expenses	$ (15,325)	$ (14,640)	$ (13,836)
Interest income	9	9	9
Interest expense	(773)	(734)	(715)
Other income (expense)	117	70	40
Income Before Income Taxes	861	1,795	1,096
Income tax benefit	(27)	345	268
Income Available for Common Shareholders	874	1,436	814
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent [Abstract]
Net change in investments (net of taxes $12, $17, and $26, at respective dates)	(17)	(25)	38
Total other comprehensive income (loss)	(18)	(39)	151
Comprehensive Income	$ 870	$ 1,411	$ 979
Weighted average common shares outstanding, basic	484	468	444
Weighted average common shares outstanding, diluted	487	470	445
Net earnings per common share, basic	$ 1.81	$ 3.07	$ 1.83
Net earnings per common share, diluted	$ 1.79	$ 3.06	$ 1.83
PG&E Corporation [Member]
Administrative service revenue	$ 51	$ 51	$ 41
Operating expenses	(53)	(53)	(42)
Interest income	1	1	1
Interest expense	(10)	(14)	(25)
Other income (expense)	30	(1)	(57)
Equity in earnings of subsidiaries	852	1,413	848
Income Before Income Taxes	871	1,397	766
Income tax benefit	3	39	48
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent [Abstract]
Pension and other postretirement benefit plans (net of taxes of $10, $80, $72, at respective dates)	(1)	(14)	113
Net change in investments (net of taxes $12, $17, and $26, at respective dates)	(17)	(25)	38
Total other comprehensive income (loss)	(18)	(39)	151
Comprehensive Income	$ 856	$ 1,397	$ 965
Weighted average common shares outstanding, basic	484	468	444
Weighted average common shares outstanding, diluted	487	470	445
Net earnings per common share, basic	$ 1.81	$ 3.07	$ 1.83
Net earnings per common share, diluted	$ 1.79	$ 3.06	$ 1.83