This element represents net amounts not yet recognized as an expense.

No definition available.

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- Definition

This element represents the net amount recognized as a regulatory asset (liability).

+ References

No definition available.

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- Definition

This element represents net gains and losses recognized as a regulatory asset (liability).

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No definition available.

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- Definition

This element represents the prior service cost (credit) recognized as a regulatory asset (liability).

+ References

No definition available.

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- Definition

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

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The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

+ References

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The pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

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The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

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Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

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The interest rate used to adjust for the time value of money for the plan.

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Expected rate of compensation increases (for pay-related plans).

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1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

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The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

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The increase in the fair value of plan assets from contributions made by the employer.

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The amount of contributions made by plan participants. This item represents a periodic increase to the plan obligation and an increase to plan assets.

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- Definition

The amount of decrease that is related to an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

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- Definition

The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

+ References

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The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ References

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- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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Changes in the defined benefit obligation, not otherwise separately disclosed in the financial statements.

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No definition available.

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If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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The amount of increase or decrease due to a change in the terms of an existing plan or the initiation of a new plan. A plan amendment may increase or decrease benefits, including those attributed to years of service already rendered.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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The ultimate trend rate for health care costs.

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Year the ultimate health care cost trend rate is expected to be reached, in CCYY format.

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Portion of the carrying amount as of the balance sheet date of obligations due all related parties that is payable after one year or beyond the normal operating cycle if longer.

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For a classified balance sheet, the amount recognized in balance sheet as a current liability associated with an underfunded defined benefit plan.

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This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans.

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Compensation and Benefit Plans (Plan Assets and Benefit Obligation) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 31, 2014	Aug. 31, 2013	May 31, 2013
Change in projected benefit obligation
Actuarial (gain) loss	$ 374	$ (563)
Amounts recognized in the consolidated balance sheets consist of1:
Long-term liabilities	(2,155)	(1,378)
Southern California Edison
Change in projected benefit obligation
Actuarial (gain) loss	357	(558)
Amounts recognized in the consolidated balance sheets consist of1:
Long-term liabilities	(1,672)	(951)
Pension Plans
Change in projected benefit obligation
Benefit obligation at beginning of year	4,178	4,948
Service cost	133	174
Interest cost	181	182
Actuarial (gain) loss	469	(330)
Curtailment gain	(5)	0
Benefits paid	(449)	(796)
Other	10
Benefit obligation at end of year	4,517	4,178
Change in plan assets
Fair value of plan assets at beginning of year	3,477	3,542
Actual return on plan assets	257	540
Employer contributions	169	191
Benefits paid	(449)	(796)
Fair value of plan assets at end of year	3,454	3,477
Funded status at end of year	(1,063)	(701)
Amounts recognized in the consolidated balance sheets consist of1:
Current liabilities	(27)	(15)
Long-term liabilities	(1,036)	(686)
Total liabilities	(1,063)	(701)
Amounts recognized in accumulated other comprehensive loss consist of:
Net loss	102	30
Amounts recognized in accumulated other comprehensive loss consist of:
Prior service cost	20	25
Net loss	640	328
Total amounts recognized as regulatory asset	660	353
Total not yet recognized as expense	762	383
Accumulated benefit obligation at end of year	4,356	4,015
Pension plans with an accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	4,517	4,178
Accumulated benefit obligation	4,356	4,015
Fair value of plan assets	3,454	3,477
Weighted-average assumptions used to determine obligations at end of year:
Discount rate	3.85%	4.75%	3.75%	4.00%	4.50%	4.25%
Rate of compensation increase	4.00%	4.00%
Pension Plans \| Southern California Edison
Change in projected benefit obligation
Benefit obligation at beginning of year	3,721	4,434
Service cost	124	154
Interest cost	159	164
Actuarial (gain) loss	386	(277)
Curtailment gain	0	0
Benefits paid	(391)	(754)
Other	0	0
Benefit obligation at end of year	3,999	3,721
Change in plan assets
Fair value of plan assets at beginning of year	3,236	3,320
Actual return on plan assets	240	505
Employer contributions	132	165
Benefits paid	(391)	(754)
Fair value of plan assets at end of year	3,217	3,236
Funded status at end of year	(782)	(485)
Amounts recognized in the consolidated balance sheets consist of1:
Current liabilities	(5)	(5)
Long-term liabilities	(777)	(480)
Total liabilities	(782)	(485)
Amounts recognized in accumulated other comprehensive loss consist of:
Net loss	31	33
Amounts recognized in accumulated other comprehensive loss consist of:
Prior service cost	20	25
Net loss	640	328
Total amounts recognized as regulatory asset	660	353
Total not yet recognized as expense	691	386
Accumulated benefit obligation at end of year	3,881	3,599
Pension plans with an accumulated benefit obligation in excess of plan assets:
Projected benefit obligation	3,999	3,721
Accumulated benefit obligation	3,881	3,599
Fair value of plan assets	3,217	3,236
Weighted-average assumptions used to determine obligations at end of year:
Discount rate	3.85%	4.75%
Rate of compensation increase	4.00%	4.00%
Postretirement Benefits Other Than Pensions
Change in projected benefit obligation
Benefit obligation at beginning of year	2,220	2,460
Service cost	40	49	47
Interest cost	117	98	108
Special termination benefits	3	11
Actuarial (gain) loss	582	(313)
Plan participants' contributions	19	18
Benefits paid	(197)	(103)
Benefit obligation at end of year	2,784	2,220	2,460
Change in plan assets
Fair value of plan assets at beginning of year	2,065	1,800
Actual return on plan assets	180	317
Employer contributions	19	33
Plan participants' contributions	19	18
Benefits paid	(197)	(103)
Fair value of plan assets at end of year	2,086	2,065	1,800
Funded status at end of year	(698)	(155)
Amounts recognized in the consolidated balance sheets consist of1:
Current liabilities	(15)	(17)
Long-term liabilities	(683)	(138)
Total liabilities	(698)	(155)
Amounts recognized in accumulated other comprehensive loss consist of:
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	4	4
Amounts recognized in accumulated other comprehensive loss consist of:
Prior service cost	(19)	(54)
Net loss	577	69
Total amounts recognized as regulatory asset	558	15
Total not yet recognized as expense	562	19
Weighted-average assumptions used to determine obligations at end of year:
Discount rate	4.16%	5.00%
Rate assumed for following year	7.75%	7.75%
Ultimate rate	5.00%	5.00%
Year ultimate rate reached	2021	2020
Postretirement Benefits Other Than Pensions \| Southern California Edison
Change in projected benefit obligation
Benefit obligation at beginning of year	2,211	2,452
Service cost	40	48	47
Interest cost	117	97	108
Special termination benefits	3	11
Actuarial (gain) loss	582	(312)
Plan participants' contributions	19	18
Benefits paid	(197)	(103)
Benefit obligation at end of year	2,775	2,211	2,452
Change in plan assets
Fair value of plan assets at beginning of year	2,065	1,800
Actual return on plan assets	180	317
Employer contributions	19	33
Plan participants' contributions	19	18
Benefits paid	(197)	(103)
Fair value of plan assets at end of year	2,086	2,065	1,800
Funded status at end of year	(689)	(146)
Amounts recognized in the consolidated balance sheets consist of1:
Current liabilities	(15)	(16)
Long-term liabilities	(674)	(130)
Total liabilities	(689)	(146)
Amounts recognized in accumulated other comprehensive loss consist of:
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	0	0
Amounts recognized in accumulated other comprehensive loss consist of:
Prior service cost	(19)	(54)
Net loss	577	69
Total amounts recognized as regulatory asset	558	15
Total not yet recognized as expense	558	15
Weighted-average assumptions used to determine obligations at end of year:
Discount rate	4.16%	5.00%
Rate assumed for following year	7.75%	7.75%
Ultimate rate	5.00%	5.00%
Year ultimate rate reached	2021	2020
Edison International \| Postretirement Benefits Other Than Pensions
Weighted-average assumptions used to determine obligations at end of year:
Long-term payable	$ 121	$ 95