Short-term Debt, Expiration Period

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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-Publisher FASB
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-Topic 835
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
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Balance Type:	credit
Period Type:	duration

- Definition

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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of short-term debt outstanding calculated at point in time.

+ References

+ Details

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- Details

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Debt and Credit Agreements (Details) - USD ($)	1 Months Ended		3 Months Ended
Debt and Credit Agreements (Details) - USD ($)	Jan. 31, 2018	Dec. 31, 2017	Mar. 31, 2018
Debt Instrument [Line Items]
Short-term debt		$ 2,393,000,000	$ 70,000,000
Term Loan Agreement
Debt Instrument [Line Items]
Debt	$ 500,000,000
London Interbank Offered Rate	0.60%
4.125% Senior notes due 2028 \| Senior notes
Debt Instrument [Line Items]
Debt			$ 550,000,000
Stated interest rate			4.125%
Multi-year revolving credit facility
Debt Instrument [Line Items]
Commitment			$ 1,250,000,000
Short-term debt		$ 639,000,000	0
Weighted average interest rate		1.70%
Credit facility
Debt Instrument [Line Items]
Weighted average interest rate		2.56%
Proceeds from credit facility		$ 500,000,000
Repayments of credit facility	$ 500,000,000
Southern California Edison
Debt Instrument [Line Items]
Short-term debt		$ 1,238,000,000	70,000,000
Southern California Edison \| 2.90% First and refunding mortgage bonds due 2021 \| First and refunding mortgage bonds
Debt Instrument [Line Items]
Debt			$ 450,000,000
Stated interest rate			2.90%
Southern California Edison \| 3.65% First and refunding mortgage bonds due 2028 \| First and refunding mortgage bonds
Debt Instrument [Line Items]
Debt			$ 400,000,000
Stated interest rate			3.65%
Southern California Edison \| 4.125% First and refunding mortgage bonds due 2048 \| First and refunding mortgage bonds
Debt Instrument [Line Items]
Debt			$ 400,000,000
Stated interest rate			4.125%
Southern California Edison \| Multi-year revolving credit facility
Debt Instrument [Line Items]
Commitment			$ 2,750,000,000
Weighted average interest rate		2.46%
Southern California Edison \| Multi-year revolving credit facility \| Commercial paper
Debt Instrument [Line Items]
Weighted average interest rate		1.75%
Outstanding commercial paper		$ 738,000,000
Southern California Edison \| Multi-year revolving credit facility \| Letters of credit
Debt Instrument [Line Items]
Outstanding letters of credit			$ 103,000,000
Letters of credit expiration period			12 months
Southern California Edison \| Multi-year revolving credit facility \| Commercial paper
Debt Instrument [Line Items]
Short-term debt			$ 70,000,000
Weighted average interest rate			2.24%
Southern California Edison \| Credit facility
Debt Instrument [Line Items]
Proceeds from credit facility		$ 500,000,000
Repayments of credit facility	$ 500,000,000