Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 1,660	$ 1,407	$ 888
Other Comprehensive Income
Pension and other postretirement benefit plans obligations (related to PG&E Corporation net of income tax of $0, $1 and $0 and related to the Utility of $3, $1, and $1, at respective dates)	1	(2)	(1)
Net change in investments (net of taxes $0, $0, and $12, at respective dates)	0	0	(17)
Total other comprehensive income (loss)	1	(2)	(18)
Comprehensive Income	1,661	1,405	870
Preferred stock dividend requirement of subsidiary	14	14	14
Comprehensive Income Attributable to Common Shareholders	1,647	1,391	856
Pacific Gas And Electric Company [Member]
Net income	1,691	1,402	862
Other Comprehensive Income
Pension and other postretirement benefit plans obligations (related to PG&E Corporation net of income tax of $0, $1 and $0 and related to the Utility of $3, $1, and $1, at respective dates)	4	(1)	(2)
Total other comprehensive income (loss)	4	(1)	(2)
Comprehensive Income	$ 1,695	$ 1,401	$ 860