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First mortgage bonds amount available for future issuance.

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Oil and Gas, Production Reserve, Name Plate Capacity, Energy

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Write off of Deferred Debt Issuance Costs, After Tax and Noncontrolling Interest

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

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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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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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Weighted average interest rate of debt outstanding.

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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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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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DEBT AND CREDIT FACILITIES - LONG-TERM DEBT NARRATIVE (Details)					1 Months Ended
	Feb. 18, 2022 USD ($)	Jan. 11, 2022 USD ($)	Oct. 13, 2021 USD ($)	Oct. 08, 2021 USD ($)	Dec. 31, 2021 USD ($)	Nov. 30, 2021 USD ($)	Aug. 31, 2021 USD ($)	Mar. 31, 2021 USD ($) lender	Dec. 31, 2020 USD ($) MMBbls	Mar. 18, 2021	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Unsecured Debt					$ 9,100,000,000
Total facility					9,535,000,000
SoCalGas
Debt Instrument [Line Items]
Unsecured Debt					309,000,000
First mortgage bonds available for future issuance					1,900,000,000
Total facility					750,000,000
Gross long-term debt					4,450,000,000				$ 4,450,000,000		$ 3,800,000,000
San Diego Gas and Electric Company [Member]
Debt Instrument [Line Items]
First mortgage bonds available for future issuance					7,300,000,000
Total facility					1,500,000,000
Gross long-term debt					$ 6,417,000,000				$ 6,053,000,000		5,140,000,000
San Diego Gas and Electric Company [Member] \| Subsequent Event \| Secured Debt [Member]
Debt Instrument [Line Items]
Term of contract	2 years
Debt amount	$ 400,000,000
Proceeds from issuance of debt	200,000,000
Aggregate amount of borrowings that may be requested	$ 400,000,000
Variable percentage rate	0.625%
San Diego Gas and Electric Company [Member] \| Green First Mortgage Bonds Due 2051
Debt Instrument [Line Items]
Stated percentage rate							2.95%
Debt amount							$ 750,000,000
Proceeds from issuance of debt							737,000,000
Underwriting discounts and debt issuance costs							$ 13,000,000
Sempra LNG \| ECA LNG JV
Debt Instrument [Line Items]
Ownership percentage in consolidated entity									83.40%
Sempra LNG \| Loan Agreement To Finance Natural Gas Liquefaction Export Facility
Debt Instrument [Line Items]
Term of contract									5 years
Total facility									$ 1,600,000,000
Name plate capacity (in Mtpa) \| MMBbls									3.25
Initial offtake capacity (in Mtpa) \| MMBbls									2.5
Stated percentage rate									2.70%
Long-term debt outstanding									$ 17,000,000
Weighted average rate					2.93%				2.82%
Sempra Energy
Debt Instrument [Line Items]
Total facility					$ 3,185,000,000
Sempra Energy \| Senior Unsecured Notes Maturing 2022 Through 2025
Debt Instrument [Line Items]
Underwriting discounts and debt issuance costs					126,000,000
Debt issuance costs (after tax)					92,000,000
Repayments of Other Debt					$ 2,350,000,000
Sempra Energy \| 4.125% Junior Subordinated Notes April 1, 2052(1)
Debt Instrument [Line Items]
Stated percentage rate					4.125%	4.125%
Gross long-term debt					$ 1,000,000,000				$ 0		0
Debt amount						$ 1,000,000,000
Proceeds from issuance of debt						988,000,000
Underwriting discounts and debt issuance costs						$ 12,000,000
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed						102.00%
Debt instrument, redemption price (as a percent)						100.00%
Sempra Energy \| 4.125% Junior Subordinated Notes April 1, 2052(1) \| US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Variable percentage rate						2.868%
Sempra Energy \| 5.75% Junior Subordinated Notes July 1, 2079(1)
Debt Instrument [Line Items]
Stated percentage rate					5.75%
Gross long-term debt					$ 758,000,000				$ 758,000,000		758,000,000
Subsidiary of TOTAL SE \| ECA LNG JV
Debt Instrument [Line Items]
Ownership percentage in consolidated entity									16.60%
SI Partners
Debt Instrument [Line Items]
Term of contract						3 years
Total facility					1,000,000,000	$ 1,000,000,000
SI Partners \| Senior Notes 3.25% Due 2032 \| Subsequent Event
Debt Instrument [Line Items]
Stated percentage rate		3.25%
Debt amount		$ 400,000,000
Proceeds from issuance of debt		$ 390,000,000
Variable percentage rate		0.25%
Underwriting discounts and debt issuance costs		$ 10,000,000
Debt Instrument, Face Amount Issued, Percentage Of Principal		98.903%
Debt instrument, redemption price (as a percent)		101.00%
SI Partners \| Senior Notes 3.25% Due 2032 \| Subsequent Event \| Period one
Debt Instrument [Line Items]
Debt instrument, redemption price (as a percent)		100.00%
Sempra Infrastructure
Debt Instrument [Line Items]
Gross long-term debt					$ 8,923,000,000				$ 11,247,000,000		12,298,000,000
Sempra Infrastructure \| ESJ
Debt Instrument [Line Items]
Variable percentage rate								2.63%
Underwriting discounts and debt issuance costs				$ 18,000,000				$ 6,000,000
Debt Instrument, Face Amount Issued, Percentage Of Principal								90.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt								$ 177,000,000
Business Combination, Debt Assumed, Number Of Lenders \| lender								5
Debt Instrument, Fixed Rate								6.13%
Debt Instrument, Remaining Principal Balance, Percent								10.00%
Debt Instrument, Basis Spread On Variable Rate, Increase Every Four Years								0.25%
Write off of Deferred Debt Issuance Costs, After Tax and Noncontrolling Interest				10,000,000
Repayments of assumed debt				$ 175,000,000
Sempra Infrastructure \| ESJ
Debt Instrument [Line Items]
Ownership percentage held by noncontrolling owners								50.00%	50.00%	50.00%
Sempra Infrastructure \| Loan at variable rates (2.93% at December 31, 2021) December 9, 2025
Debt Instrument [Line Items]
Stated percentage rate					2.93%
Gross long-term debt					$ 341,000,000				$ 17,000,000		$ 0
Sempra Infrastructure \| Variable Rate Loan Payable Maturing 2033 \| Ventika
Debt Instrument [Line Items]
Write off of Deferred Debt Issuance Costs, After Tax and Noncontrolling Interest			$ 20,000,000
Repayments of debt			375,000,000
Write off of Deferred Debt Issuance Cost			$ 36,000,000