Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2015
Pacific Gas And Electric Company [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%		35.00%	35.00%
State income tax (net of federal benefit)	1.60%		(2.20%)	(4.80%)
Effect of regulatory treatment of fixed asset differences	(16.80%)		(23.40%)	(33.70%)
Tax credits	(1.10%)		(0.80%)	(1.30%)
Benefit of loss carryback	0.00%		(1.10%)	(1.50%)
Non deductible penalties	0.40%		0.80%	4.30%
Tax Reform Adjustment Effective Tax Rate Impact	3.00%		0.00%	0.00%
Other, net	(2.00%)		(3.50%)	(0.20%)
Effective tax rate	20.10%		4.80%	(2.20%)
PG&E Corporation [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%		35.00%	35.00%
State income tax (net of federal benefit)	1.50%	[1]	(2.50%)	(4.90%)
Effect of regulatory treatment of fixed asset differences	(16.50%)	[2]	(23.70%)	(33.60%)
Tax credits	(1.10%)		(0.80%)	(1.30%)
Benefit of loss carryback	0.00%		(1.10%)	(1.50%)
Non deductible penalties	0.40%	[3]	0.80%	4.30%
Tax Reform Adjustment Effective Tax Rate Impact	6.80%	[4]	0.00%	0.00%
Other, net	(2.50%)	[5]	(3.90%)	(1.10%)
Effective tax rate	23.60%		3.80%	(3.10%)

[1] Includes the effect of state flow-through ratemaking treatment. In 2016 and 2015, amounts reflect an agreement with the IRS on a 2011 audit related to electric transmission and distribution repairs deductions. The 2017 amount reflects an agreement with the IRS on a 2013 audit related to generation repairs deductions.

[2] Includes the effect of federal flow-through ratemaking treatment for certain property-related costs as authorized by the 2014 GRC decision in all periods presented and by the 2015 GT&S decision which impacted 2016 and 2017. All amounts are impacted by the level of income before income taxes. The 2014 GRC and 2015 GT&S rate case decisions authorized revenue requirements that reflect flow-through ratemaking for temporary income tax differences attributable to repair costs and certain other property-related costs for federal tax purposes. For these temporary tax differences, PG&E Corporation and the Utility recognize the deferred tax impact in the current period and record offsetting regulatory assets and liabilities. Therefore, PG&E Corporation’s and the Utility’s effective tax rates are impacted as these differences arise and reverse. PG&E Corporation and the Utility recognize such differences as regulatory assets or liabilities as it is probable that these amounts will be recovered from or returned to customers in future rates.

[3] Primarily represents the effects of a non-tax deductible penalty associated with the Butte fire for 2017, non-tax deductible fines and penalties associated with the natural gas distribution facilities record-keeping decision for 2016 and the effects of the San Bruno Penalty Decision for 2015.

[4] Represents the required adjustment to deferred tax balances, due to the federal income tax rate being lowered from 35% to 21% beginning in 2018 as a result of the enactment of the Tax Act.

[5] These amounts primarily represent the impact of tax audit settlements.