Debt (Schedule Of Line Of Credit) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($)
Pacific Gas And Electric Company [Member]
Debt [Line Items]
Expiration date for credit agreement	Apr. 27, 2021
Letters of Credit Sublimit	$ 500
Swingline Loans Sublimit	75
Utility [Member]
Debt [Line Items]
Facility limit	3,000	[1]
Letters Of Credit Outstanding Amount	40
Commercial Paper	263
Facility Availability	$ 2,697
P G E Corporation [Member]
Debt [Line Items]
Expiration date for credit agreement	Apr. 27, 2021
Facility limit	$ 300	[2]
Letters Of Credit Outstanding Amount	0
Commercial Paper	0
Facility Availability	300
Letters of Credit Sublimit	50
Swingline Loans Sublimit	$ 100
Swingline Loan Repay Term	7 days
Credit Facilities [Member]
Debt [Line Items]
Facility limit	$ 3,300
Letters Of Credit Outstanding Amount	40
Commercial Paper	263
Facility Availability	$ 2,997

[1] Includes a $500 million lender commitment to the letter of credit sublimits and a $75 million commitment for swingline loans.

[2] Includes a $50 million lender commitment to the letter of credit sublimits and a $100 million commitment for “swingline” loans defined as loans that are made available on a same-day basis and are repayable in full within 7 days.