Collateralized Mortgage Obligations and Other Asset Backed Securities (1)

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- Definition

This element represents the percentage of equity investments located in United States.

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This element represents the fair value, Net, financial assets and liabilities as of the statement of financial position.

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- Definition

Interest and dividends receivables and receivables related to pending securities sales and payables related to pending securities purchases as of the balance sheet date.

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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- Definition

The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Fair value of asset associated with financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, and right to receive cash collateral under master netting arrangements.

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Fair value of financial and nonfinancial obligations.

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Fair value portion of other assets.

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Fair Value Measurements (Fair Value by Level) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Assets at fair value
Nuclear decommissioning trusts	$ 4,352	$ 4,242
Southern California Edison
Assets at fair value
Nuclear decommissioning trusts	$ 4,352	$ 4,242	$ 4,290	$ 4,331
Liabilities at fair value
Percentage of equity investments located in the United States (as a percent)	68.00%	70.00%
Collateralized mortgage obligations and other asset backed securities	$ 83	$ 79
Payables, net, related to investments	98	127
Southern California Edison \| Fair Value, Measurements, Recurring
Assets at fair value
Derivative contracts	70	74
Other	103	33
Nuclear decommissioning trusts	4,450	4,369
Total assets	4,623	4,476
Liabilities at fair value
Derivative contracts	1,226	1,157
Netting and Collateral	0	0
Total liabilities	1,226	1,157
Net assets (liabilities)	3,397	3,319
Southern California Edison \| Fair Value, Measurements, Recurring \| Stocks
Assets at fair value
Nuclear decommissioning trusts	1,537	1,547
Southern California Edison \| Fair Value, Measurements, Recurring \| Fixed income
Assets at fair value
Nuclear decommissioning trusts	2,741	2,616
Southern California Edison \| Fair Value, Measurements, Recurring \| Short-term investments, primarily cash equivalents
Assets at fair value
Nuclear decommissioning trusts	172	206
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 1
Assets at fair value
Derivative contracts	0	0
Other	103	33
Nuclear decommissioning trusts	2,778	2,448
Total assets	2,881	2,481
Liabilities at fair value
Derivative contracts	0	0
Total liabilities	0	0
Net assets (liabilities)	2,881	2,481
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 1 \| Stocks
Assets at fair value
Nuclear decommissioning trusts	1,537	1,547
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 1 \| Fixed income
Assets at fair value
Nuclear decommissioning trusts	1,153	865
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 1 \| Short-term investments, primarily cash equivalents
Assets at fair value
Nuclear decommissioning trusts	88	36
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 2
Assets at fair value
Derivative contracts	15	6
Other	0	0
Nuclear decommissioning trusts	1,672	1,921
Total assets	1,687	1,927
Liabilities at fair value
Derivative contracts	5	0
Total liabilities	5	0
Net assets (liabilities)	1,682	1,927
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 2 \| Stocks
Assets at fair value
Nuclear decommissioning trusts	0	0
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 2 \| Fixed income
Assets at fair value
Nuclear decommissioning trusts	1,588	1,751
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 2 \| Short-term investments, primarily cash equivalents
Assets at fair value
Nuclear decommissioning trusts	84	170
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 3
Assets at fair value
Derivative contracts	55	68
Other	0	0
Nuclear decommissioning trusts	0	0
Total assets	55	68
Liabilities at fair value
Derivative contracts	1,221	1,157
Total liabilities	1,221	1,157
Net assets (liabilities)	(1,166)	(1,089)
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 3 \| Stocks
Assets at fair value
Nuclear decommissioning trusts	0	0
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 3 \| Fixed income
Assets at fair value
Nuclear decommissioning trusts	0	0
Southern California Edison \| Fair Value, Measurements, Recurring \| Level 3 \| Short-term investments, primarily cash equivalents
Assets at fair value
Nuclear decommissioning trusts	$ 0	$ 0