Equity (Changes In Equity) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Balance at December 31, 2014			$ 15,748
Balance at December 31, 2014			16,000
Comprehensive Income Net Of Tax	$ 406	$ 260	423	$ 495
Common stock issued			262
Share-based compensation			34
Common stock dividends declared			(441)
Preferred stock dividend requirement of subsidiary	(4)	(4)	(7)	(7)
Balance at March 31, 2015	16,271		16,271
Balance at March 31, 2015	16,019		16,019
Pacific Gas And Electric Company [Member]
Balance at December 31, 2014			16,229
Comprehensive Income Net Of Tax	406	250	410	478
Common stock issued			0
Share-based compensation			4
Common stock dividends declared			(358)
Preferred stock dividend requirement	(4)	$ (4)	(7)	(7)
Equity contributions			185	$ 580
Balance at March 31, 2015	$ 16,463		$ 16,463