Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Public Utility, Property, Plant and Equipment [Line Items]
Number of tax equity agreements	4
Pacific Gas And Electric Company [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Disallowed capital expenditure losses	$ 116,000,000	$ 196,000,000	$ 353,000,000.00
Utility [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Composite depreciation rate	3.77%	3.51%	3.63%
AFUDC interest recorded	45,000,000	47,000,000	49,000,000
AFUDC equity recorded	100,000,000	101,000,000	107,000,000
Nuclear decommissioning obligation accrued	2,500,000,000	2,500,000,000
Estimated cost recovery on spent nuclear fuel storage proceeding every year	3,500,000,000	3,500,000,000
Approximate estimated nuclear decommissioning cost in future dollars	6,100,000,000	6,100,000,000
PGE Corporation and Utility [Member]
Public Utility, Property, Plant and Equipment [Line Items]
Loss on debt extinguishment	135,000,000	157,000,000	163,000,000
Amortization on loss on debt extinguishment	$ 22,000,000	$ 23,000,000	$ 23,000,000