Purchase commitment component percentage.

No definition available.

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- Definition

Variable Lease, Payments, Due After Year Five

+ References

No definition available.

+ Details

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- Definition

Variable Lease, Payments, Due Year Five

+ References

No definition available.

+ Details

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- Definition

Variable Payments, Due Next Twelve Months

+ References

No definition available.

+ Details

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- Definition

Variable Payments, Due Year Four

+ References

No definition available.

+ Details

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- Definition

Variable Payments, Due Year Three

+ References

No definition available.

+ Details

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- Definition

Variable Payments, Due Year Two

+ References

No definition available.

+ Details

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- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

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

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308

+ Details

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

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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

- Definition

Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

+ Details

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

- Definition

Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308

+ Details

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

- Definition

The amount purchased during the period under an unrecorded unconditional purchase obligation (for example, under the take-or-pay or throughput contract).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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COMMITMENTS AND CONTINGENCIES - CONTRACTUAL COMMITMENTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SDG&E [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
Variable payments, due in 2021	$ 297
Variable payments, due in 2022	297
Variable payments, due in 2023	296
Variable payments, due in 2024	297
Variable payments, due in 2025	296
Variable payments, due thereafter	3,069
Natural Gas Storage and Transportation Contracts [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	216
2022	203
2023	189
2024	166
2025	131
Thereafter	1,014
Total minimum payments	1,919
Natural Gas Supply Contracts [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	61
2022	13
2023	12
2024	12
2025	6
Thereafter	0
Total minimum payments	104
Natural Gas Supply Contracts [Member] \| SoCalGas [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	41
2022	0
2023	0
2024	0
2025	0
Thereafter	0
Total minimum payments	41
Natural Gas Contracts [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	277
2022	216
2023	201
2024	178
2025	137
Thereafter	1,014
Total minimum payments	2,023
Payments	989	$ 1,326	$ 1,345
Natural Gas Contracts [Member] \| SoCalGas [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	175
2022	126
2023	123
2024	103
2025	68
Thereafter	359
Total minimum payments	954
Payments	935	1,181	1,169
Natural Gas Transportation Contracts [Member] \| SoCalGas [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	134
2022	126
2023	123
2024	103
2025	68
Thereafter	359
Total minimum payments	913
Liquefied Natural Gas Contracts [Member] \| Sempra LNG [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	320
2022	422
2023	389
2024	386
2025	390
Thereafter	1,452
Total minimum payments	$ 3,359
Long-term Contracts [Member] \| San Diego Gas and Electric Company [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
Purchase commitment component percentage	28.00%
Renewable Energy Contracts Expiring Through 2041 [Member] \| San Diego Gas and Electric Company [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
Purchase commitment component percentage	27.00%
Other Owned Generation [Member] \| San Diego Gas and Electric Company [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
Purchase commitment component percentage	43.00%
Spot Market Purchases [Member] \| San Diego Gas and Electric Company [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
Purchase commitment component percentage	29.00%
Purchased-Power Contracts [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2022	$ 208
2023	173
2024	145
2025	88
Thereafter	794
Total minimum payments	1,630
Purchased-Power Contracts [Member] \| SDG&E [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	222
2022	208
2023	173
2024	145
2025	88
Thereafter	794
Total minimum payments	1,630
Variable payments, due in 2021	66
Variable payments, due in 2022	66
Variable payments, due in 2023	67
Variable payments, due in 2024	65
Variable payments, due in 2025	66
Variable payments, due thereafter	541
Payments	534	$ 744	$ 712
Infrastructure Construction And Improvements [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	525
2022	22
2023	19
2024	16
2025	16
Thereafter	98
Total minimum payments	696
Infrastructure Construction And Improvements [Member] \| SDG&E [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	2
2022	1
2023	1
2024	1
2025	1
Thereafter	19
Construction projects, payable	25
Infrastructure Improvements For Natural Gas And Electric Transmission And Distribution [Member] \| SDG&E [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
Construction projects, payable	1
Nuclear Plant Maintenance [Member] \| San Diego Gas and Electric Company [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
Construction projects, payable	24
Pipelines [Member] \| Sempra Mexico [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	466
2022	19
2023	16
2024	15
2025	15
Thereafter	79
Total minimum payments	610
Liquid Fuels Terminals [Member] \| Sempra Mexico [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
Total minimum payments	349
Natural Gas Pipelines and Ongoing Maintenance Services [Member] \| Sempra Mexico [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
Total minimum payments	249
Renewables Projects [Member] \| Sempra Mexico [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
Total minimum payments	12
Sempra LNG & Midstream Construction [Member] \| Sempra LNG [Member]
Unrecorded Unconditional Purchase Obligation, Rolling Maturity [Abstract]
2021	57
2022	2
2023	2
Total minimum payments	$ 61