Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2017

Defined Benefit Plan Disclosure [Line Items]

Reconciliation Of Changes In Plan Assets Benefit Obligations And Funded Status

Pension Plan

(in millions)	2017		2016
Change in plan assets:
Fair value of plan assets at beginning of year	$	14,729		$	13,745
Actual return on plan assets		2,380			1,358
Company contributions		335			334
Benefits and expenses paid		(792)			(708)
Fair value of plan assets at end of year	$	16,652		$	14,729
Change in benefit obligation:
Benefit obligation at beginning of year	$	17,305		$	16,299
Service cost for benefits earned		472			453
Interest cost		714			715
Actuarial (gain) loss		1,048			637
Plan amendments		10			(91)
Benefits and expenses paid		(792)			(708)
Benefit obligation at end of year (1)	$	18,757		$	17,305
Funded Status:
Current liability	$	(7)		$	(7)
Noncurrent liability		(2,098)			(2,569)
Net liability at end of year	$	(2,105)		$	(2,576)

(1) PG&E Corporation’s accumulated benefit obligation was $16.8billion and $15.6 billion at December 31, 2017 and 2016, respectively.

Postretirement Benefits Other than Pensions

(in millions)	2017		2016
Change in plan assets:
Fair value of plan assets at beginning of year	$	2,173		$	2,035
Actual return on plan assets		298			167
Company contributions		33			52
Plan participant contribution		87			85
Benefits and expenses paid		(171)			(166)
Fair value of plan assets at end of year	$	2,420		$	2,173
Change in benefit obligation:
Benefit obligation at beginning of year	$	1,877		$	1,766
Service cost for benefits earned		59			52
Interest cost		77			76
Actuarial (gain) loss		(49)			11
Plan amendments		-			37
Benefits and expenses paid		(157)			(153)
Federal subsidy on benefits paid		3			3
Plan participant contributions		87			85
Benefit obligation at end of year	$	1,897		$	1,877
Funded Status: (1)
Noncurrent asset	$	553		$	368
Noncurrent liability		(30)			(72)
Net asset at end of year	$	523		$	296

(1) At December 31, 2017 and 2016, the postretirement medical plan was in an overfunded position and the postretirement life insurance plan was in an underfunded position.

Components Of Net Periodic Benefit Cost

Pension Plan

(in millions)	2017		2016			2015
Service cost	$	472		$	453		$	479
Interest cost		714			715			673
Expected return on plan assets		(770)			(828)			(873)
Amortization of prior service cost		(7)			8			15
Amortization of net actuarial loss		22			24			10
Net periodic benefit cost		431			372			304
Less: transfer to regulatory account (1)		(92)			(34)			34
Total expense recognized	$	339		$	338		$	338

(1) The Utility recorded these amounts to a regulatory account as they are probable of recovery from customers in future rates.

Postretirement Benefits Other than Pensions

(in millions)	2017		2016			2015
Service cost	$	59		$	52		$	55
Interest cost		77			76			71
Expected return on plan assets		(97)			(107)			(112)
Amortization of prior service cost		15			15			19
Amortization of net actuarial loss		4			4			4
Net periodic benefit cost	$	58		$	40		$	37

Estimated Amortized Net Periodic Benefit For 2012

(in millions)	Pension Plan		PBOP Plans
Unrecognized prior service cost	$	(6)	$	14
Unrecognized net loss		5		(5)
Total	$	(1)	$	9

Schedule Of Assumptions Used In Calculating Projected Benefit Cost And Net Periodic Benefit Cost

	Pension Plan						PBOP Plans
	December 31,						December 31,
	2017		2016		2015		2017		2016		2015
Discount rate	3.64	%	4.11	%	4.37	%	3.60- 3.67	%	4.05 - 4.19	%	4.27 - 4.48	%
Rate of future compensation
increases	3.90	%	4.00	%	4.00	%	-		-		-
Expected return on plan
assets	6.20	%	5.30	%	6.10	%	3.30 - 7.10	%	2.80 - 6.00	%	3.20 - 6.60	%

Schedule Of Assumed Health Care Cost Trend

The assumed health care cost trend rate as of December 31, 2017 was 6.8%, decreasing gradually to an ultimate trend rate in 2025 and beyond of approximately 4.5%.  A one-percentage-point change in assumed health care cost trend rate would have the following effects:

	One-Percentage-Point		One-Percentage-Point
(in millions)	Increase		Decrease
Effect on postretirement benefit obligation	$	128	$	(129)
Effect on service and interest cost		9		(10)

Target Asset Allocation Percentages

	Pension Plan								PBOP Plans
	2018		2017			2016			2018			2017			2016
Global equity	29	%		27	%		25	%		33	%		32	%		32	%
Absolute return	5	%		5	%		5	%		3	%		3	%		3	%
Real assets	8	%		10	%		10	%		6	%		7	%		7	%
Fixed income	58	%		58	%		60	%		58	%		58	%		58	%
Total	100	%		100	%		100	%		100	%		100	%		100	%

Schedule Of Changes In Fair Value Of Plan Assets

	Fair Value Measurements
	At December 31,
	2017												2016
(in millions)	Level 1			Level 2			Level 3			Total				Level 1			Level 2			Level 3			Total
Pension Plan:
Short-term investments	$	287	$		424	$		-	$		711	$			364	$		369	$		-	$		733
Global equity		1,292			-			-			1,292				996			-			-			996
Real assets		499			-			-			499				610			-			-			610
Fixed-income		1,916			5,520			4			7,440				1,754			4,774			5			6,533
Assets measured at NAV		-			-			-			6,818				-			-			-			5,950
Total	$	3,994	$		5,944	$		4	$		16,760	$			3,724	$		5,143	$		5	$		14,822
PBOP Plans:
Short-term investments	$	31	$		-	$		-	$		31	$			33	$		-	$		-	$		33
Global equity		141			-			-			141				115			-			-			115
Real assets		55			-			-			55				70			-			-			70
Fixed-income		163			757			-			920				150			656			-			806
Assets measured at NAV		-			-			-			1,281				-			-			-			1,153
Total	$	390	$		757	$		-	$		2,428	$			368	$		656	$		-	$		2,177
Total plan assets at fair value									$		19,188											$		16,999

Schedule Of Level 3 Reconciliation

The following table is a reconciliation of changes in the fair value of instruments for the pension plan that have been classified as Level 3 for the years ended December 31, 2017 and 2016:

(in millions)	Fixed-
For the year ended December 31, 2017	Income
Balance at beginning of year	$	5
Actual return on plan assets:
Relating to assets still held at the reporting date		(1)
Relating to assets sold during the period		-
Purchases, issuances, sales, and settlements:
Purchases		3
Settlements		(3)
Balance at end of year	$	4
(in millions)	Fixed-
For the year ended December 31, 2016	Income
Balance at beginning of year	$	3
Actual return on plan assets:
Relating to assets still held at the reporting date		3
Relating to assets sold during the period		-
Purchases, issuances, sales, and settlements:
Purchases		-
Settlements		(1)
Balance at end of year	$	5

Schedule Of Estimated Benefits Expected To Be Paid

	Pension		PBOP			Federal
(in millions)	Plan		Plans			Subsidy
2018	$	712		$	83		$	(8)
2019		811			87			(9)
2020		850			91			(9)
2021		886			95			(10)
2022		920			100			(3)
Thereafter in the succeeding five years		5,002			508			(15)