Power generating capacity of the project owned and/or controlled by the entity.

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Short-term Debt, Expiration Period

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No definition available.

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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Weighted average interest rate of short-term debt outstanding.

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Debt and Credit Agreements (Details)	6 Months Ended	12 Months Ended
Debt and Credit Agreements (Details)	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($) MW	Jul. 31, 2015 USD ($)	Mar. 31, 2015 USD ($)
Debt Instrument [Line Items]
Short-term debt	$ 1,415,000,000	$ 1,291,000,000
Non-recourse Solar Rooftop Project Investment Financing [Member]
Debt Instrument [Line Items]
Weighted average interest rate (as a percent)	2.69%
Power generating capacity (in megawatts) \| MW		35
Term of debt instrument		7 years
Debt, current	$ 18,600,000
Issuance of debt		$ 31,600,000
Southern California Edison
Debt Instrument [Line Items]
Short-term debt	851,000,000	$ 667,000,000
Southern California Edison \| First and refunding mortgage bonds
Debt Instrument [Line Items]
Issuance of debt				$ 550,000,000
Stated interest rate				1.845%
Southern California Edison \| First and Refunding Mortgage Bonds Due in 2022
Debt Instrument [Line Items]
Issuance of debt				$ 325,000,000
Stated interest rate				2.40%
Southern California Edison \| First and Refunding Mortgage Bonds Due in 2045
Debt Instrument [Line Items]
Issuance of debt				$ 425,000,000
Stated interest rate				3.60%
Southern California Edison \| 1.875% Pollution-Control Bonds Due in 2029
Debt Instrument [Line Items]
Issuance of debt	$ 56,000,000
Stated interest rate	1.875%
Southern California Edison \| 1.875% Pollution-Control Bonds Due in 2031
Debt Instrument [Line Items]
Issuance of debt	$ 75,000,000
Stated interest rate	1.875%
Edison International Parent and Other \| Revolving credit facility
Debt Instrument [Line Items]
Commitment	$ 1,250,000,000
Weighted average interest rate (as a percent)	0.48%	0.45%
Short-term debt	$ 545,000,000	$ 619,000,000
Edison International Parent and Other \| Credit Facility July 2020
Debt Instrument [Line Items]
Commitment	68,000,000
Commercial paper \| Southern California Edison \| Revolving credit facility
Debt Instrument [Line Items]
Commitment	2,750,000,000
Outstanding borrowings	$ 852,000,000	$ 367,000,000
Weighted average interest rate (as a percent)	0.34%	0.40%
Commercial paper \| Southern California Edison \| Credit Facility July 2020
Debt Instrument [Line Items]
Commitment	$ 150,000,000
Letters of credit \| Southern California Edison \| Revolving credit facility
Debt Instrument [Line Items]
Outstanding letters of credit	$ 117,000,000
Letters of credit expiration period	12 months
Subsequent Event \| Edison International Parent and Other \| Credit Facility July 2020
Debt Instrument [Line Items]
Commitment			$ 1,180,000,000
Subsequent Event \| Commercial paper \| Southern California Edison \| Credit Facility July 2020
Debt Instrument [Line Items]
Commitment			$ 2,600,000,000