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, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating expenses	$ (15,489)	$ (15,325)	$ (14,640)
Interest income	23	9	9
Interest expense	(829)	(773)	(734)
Other income (expense)	91	117	70
Income Before Income Taxes	1,462	861	1,795
Income tax provision (benefit)	55	(27)	345
Income Available for Common Shareholders	1,393	874	1,436
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent [Abstract]
Net change in investments (net of taxes $0, $12, and $17, at respective dates)	0	(17)	(25)
Total other comprehensive income (loss)	(2)	(18)	(39)
Comprehensive Income	$ 1,405	$ 870	$ 1,411
Weighted average common shares outstanding, basic	499	484	468
Weighted average common shares outstanding, diluted	501	487	470
Net earnings per common share, basic	$ 2.79	$ 1.81	$ 3.07
Net earnings per common share, diluted	$ 2.78	$ 1.79	$ 3.06
PG&E Corporation [Member]
Administrative service revenue	$ 70	$ 51	$ 51
Operating expenses	(73)	(53)	(53)
Interest income	1	1	1
Interest expense	(10)	(10)	(14)
Other income (expense)	2	30	(1)
Equity in earnings of subsidiaries	1,388	852	1,413
Income Before Income Taxes	1,378	871	1,397
Income tax provision (benefit)	15	3	39
Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent [Abstract]
Pension and other postretirement benefit plans (net of taxes of $1, $0, $10, at respective dates)	(2)	(1)	(14)
Net change in investments (net of taxes $0, $12, and $17, at respective dates)	0	(17)	(25)
Total other comprehensive income (loss)	(2)	(18)	(39)
Comprehensive Income	$ 1,391	$ 856	$ 1,397
Weighted average common shares outstanding, basic	499	484	468
Weighted average common shares outstanding, diluted	501	487	470
Net earnings per common share, basic	$ 2.79	$ 1.81	$ 3.07
Net earnings per common share, diluted	$ 2.78	$ 1.79	$ 3.06