Employee Benefit Plans (Reconciliation Of Changes In Plan Assets Benefit Obligations And Funded Status) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Noncurrent liability	$ (2,561)		$ (1,601)
Accumulated benefit obligation	14,900		12,600
Decrease in other comprehensive income	14		(113)		(108)
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at January 1	1,892		1,758
Actual return on plan assets	241		64
Company contributions	57		145
Plan participant contribution	63		64
Benefits and expenses paid	(161)		(139)
Fair value of plan assets at December 31	2,092		1,892		1,758
Projected benefit obligation at January 1	1,597		1,940
Service cost for benefits earned	45		53
Interest cost	76		74		83
Actuarial (gain) loss	(166)		(415)
Benefits and expenses paid	(140)		(123)
Federal subsidy on benefits paid	4		4
Projected benefit obligation at December 31	1,811		1,597		1,940
Noncurrent liability	(87)	[1]	(57)	[1]
Net assets (liabilities) at end of year	(281)	[1]	(295)	[1]
Noncurrent asset	368	[1]	352	[1]
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at January 1	12,527		12,141
Actual return on plan assets	1,946		673
Company contributions	332		323
Benefits and expenses paid	(589)		(610)
Fair value of plan assets at December 31	14,216		12,527		12,141
Projected benefit obligation at January 1	14,077		15,541
Service cost for benefits earned	383		468
Interest cost	695		627		658
Actuarial (gain) loss	2,131		(1,950)
Plan amendments	(1)		0
Transitional costs	0		1
Benefits and expenses paid	(589)		(610)
Projected benefit obligation at December 31	16,696	[2]	14,077		15,541
Current liability	(6)		(6)
Noncurrent liability	(2,474)		(1,544)
Net assets (liabilities) at end of year	$ (2,480)		$ (1,550)

[1] At December 31, 2014 and 2013, the postretirement medical plan was in an overfunded position and the postretirement life insurance plan was in an underfunded position.

[2] PG&E Corporation?s accumulated benefit obligation was $14.9 billion and $12.6 billion at December 31, 2014 and 2013, respectively.