Debt (Schedule Of Long-Term Debt Repayments) (Details) $ in Millions	Dec. 31, 2017 USD ($)
Debt [Line Items]
Total consolidated long-term debt	$ 18,383
Pacific Gas And Electric Company [Member]
Debt [Line Items]
Average fixed interest rate	4.61%
Fixed rate obligations	$ 17,270
Variable interest rate as of December 31, 2017	1.63%
Variable rate obligations	$ 763	[1]
PG&E Corporation [Member]
Debt [Line Items]
Average fixed interest rate	2.40%
Fixed rate obligations	$ 350
2018 [Member]
Debt [Line Items]
Total consolidated long-term debt	$ 445
2018 [Member] | Pacific Gas And Electric Company [Member]
Debt [Line Items]
Average fixed interest rate	7.52191%
Fixed rate obligations	$ 445
2019 [Member]
Debt [Line Items]
Total consolidated long-term debt	$ 499
2019 [Member] | Pacific Gas And Electric Company [Member]
Debt [Line Items]
Variable interest rate as of December 31, 2017	1.78%
Variable rate obligations	$ 149	[1]
2019 [Member] | PG&E Corporation [Member]
Debt [Line Items]
Average fixed interest rate	2.40%
Fixed rate obligations	$ 350
2020 [Member]
Debt [Line Items]
Total consolidated long-term debt	$ 1,414
2020 [Member] | Pacific Gas And Electric Company [Member]
Debt [Line Items]
Average fixed interest rate	3.50%
Fixed rate obligations	$ 800
Variable interest rate as of December 31, 2017	1.59201%
Variable rate obligations	$ 614	[1]
2021 [Member]
Debt [Line Items]
Total consolidated long-term debt	$ 550
2021 [Member] | Pacific Gas And Electric Company [Member]
Debt [Line Items]
Average fixed interest rate	3.79545%
Fixed rate obligations	$ 550
2022 [Member]
Debt [Line Items]
Total consolidated long-term debt	$ 500
2022 [Member] | Pacific Gas And Electric Company [Member]
Debt [Line Items]
Average fixed interest rate	2.31%
Fixed rate obligations	$ 500	[2]
Thereafter [Member]
Debt [Line Items]
Total consolidated long-term debt	$ 14,975
Thereafter [Member] | Pacific Gas And Electric Company [Member]
Debt [Line Items]
Average fixed interest rate	4.68481%
Fixed rate obligations	$ 14,975

[1] The bonds due in 2026 are backed by separate letters of credit that expire June 5, 2019, or December 1, 2020.

[2] Pollution Control Bonds series 2008F and 2010E were remarketed and issued in June 2017. Although the stated maturity date for both series is 2026, these bonds have a mandatory redemption date of May 30, 2022.