No definition available.

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Namespace Prefix:	sre_
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- Definition

Committed lines of credit, capacity for issuance of letters of credit.

+ References

No definition available.

+ Details

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Namespace Prefix:	sre_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Committed lines of credit, maximum ratio of indebtedness to total capitalization.

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, Increase Limit

+ References

No definition available.

+ Details

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Namespace Prefix:	sre_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number of Lenders

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
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-Publisher FASB
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-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

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

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

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DEBT AND CREDIT FACILITIES - LINES OF CREDIT (Details)				1 Months Ended	12 Months Ended
DEBT AND CREDIT FACILITIES - LINES OF CREDIT (Details)	Sep. 23, 2019 USD ($)	May 17, 2019 USD ($) lender	Apr. 11, 2019 USD ($)	Feb. 28, 2019 USD ($) lender	Dec. 31, 2018 USD ($) lender	Sep. 30, 2019 USD ($)	May 16, 2019 USD ($)
Line of Credit Facility [Line Items]
Standby letters of credit outstanding						$ 648,000,000
Sempra Energy [Member]
Line of Credit Facility [Line Items]
Term of debt instrument		5 years
Maximum borrowing capacity		$ 1,250,000,000				1,250,000,000	$ 1,250,000,000
Number of lenders \| lender		23
Lender maximum share of debt, percent		6.00%
Available unused credit						1,250,000,000
Capacity for issuance of letters of credit						200,000,000
Option to request						500,000,000
Sempra Global [Member]
Line of Credit Facility [Line Items]
Term of debt instrument		5 years
Maximum borrowing capacity		$ 3,190,000,000				3,185,000,000	3,190,000,000
Number of lenders \| lender		23
Lender maximum share of debt, percent		6.00%
Available unused credit						840,000,000
San Diego Gas and Electric Company [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 1,500,000,000				1,500,000,000	750,000,000
Number of lenders \| lender		23
Lender maximum share of debt, percent		6.00%
Available unused credit						1,500,000,000
Capacity for issuance of letters of credit						100,000,000
Option to request						$ 250,000,000
Maximum ratio of indebtedness to total capitalization						65.00%
California Utilities Combined [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity							1,000,000,000
Southern California Gas Company [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 750,000,000				$ 750,000,000	$ 750,000,000
Number of lenders \| lender		23
Lender maximum share of debt, percent		6.00%
Available unused credit						642,000,000
Capacity for issuance of letters of credit						100,000,000
Option to request						$ 250,000,000
Maximum ratio of indebtedness to total capitalization						65.00%
Sempra U.S. Businesses [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 6,685,000,000
Available unused credit						$ 4,232,000,000
Maximum ratio of indebtedness to total capitalization						65.00%
Sempra Mexico [Member]
Line of Credit Facility [Line Items]
Term of debt instrument				5 years
Maximum borrowing capacity				$ 1,500,000,000	$ 1,170,000,000
Number of lenders \| lender				10	8
Available unused credit						$ 642,000,000
Commercial Paper [Member] \| Sempra Energy [Member]
Line of Credit Facility [Line Items]
Amount outstanding						0
Commercial Paper [Member] \| Sempra Global [Member]
Line of Credit Facility [Line Items]
Amount outstanding						(2,345,000,000)
Unamortized debt discount						3,000,000
Commercial Paper [Member] \| San Diego Gas and Electric Company [Member]
Line of Credit Facility [Line Items]
Amount outstanding						0
Commercial Paper [Member] \| Southern California Gas Company [Member]
Line of Credit Facility [Line Items]
Amount outstanding						(108,000,000)
Commercial Paper [Member] \| Sempra U.S. Businesses [Member]
Line of Credit Facility [Line Items]
Amount outstanding						(2,453,000,000)
Additional Line of Credit [Member] \| Sempra Mexico [Member]
Line of Credit Facility [Line Items]
Term of debt instrument	2 years		3 years
Maximum borrowing capacity	$ 280,000,000		$ 100,000,000
Amount outstanding						0
Available unused credit						$ 100,000,000