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SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA (Tables)
 12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Cash, Cash Equivalents and Restricted Cash
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on Sempra’s Consolidated Balance Sheets to the sum of such amounts reported on Sempra’s Consolidated Statements of Cash Flows.
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH
(Dollars in millions)
December 31,
 20232022
Sempra:
Cash and cash equivalents$236 $370 
Restricted cash, current49 40 
Restricted cash, noncurrent104 52 
Total cash, cash equivalents and restricted cash on the Consolidated Statements of Cash Flows$389 $462 
Schedule of Accounts Receivable, Allowance for Credit Loss
Changes in allowances for credit losses for trade receivables and other receivables are as follows:
CHANGES IN ALLOWANCES FOR CREDIT LOSSES
(Dollars in millions)
 202320222021
Sempra:   
Allowances for credit losses at January 1$181 $136 $138 
Provisions for expected credit losses468 123 45 
Write-offs(116)(78)(47)
Allowances for credit losses at December 31$533 $181 $136 
SDG&E:   
Allowances for credit losses at January 1$78 $66 $69 
Provisions for expected credit losses115 54 23 
Write-offs(49)(42)(26)
Allowances for credit losses at December 31$144 $78 $66 
SoCalGas:   
Allowances for credit losses at January 1$98 $69 $68 
Provisions for expected credit losses300 65 22 
Write-offs(67)(36)(21)
Allowances for credit losses at December 31$331 $98 $69 

Allowances for credit losses related to trade receivables and other receivables are included in the Consolidated Balance Sheets as follows:
ALLOWANCES FOR CREDIT LOSSES
(Dollars in millions)
 December 31,
 20232022
Sempra:  
Accounts receivable – trade, net
$480 $140 
Accounts receivable – other, net
52 40 
Other long-term assets1 1 
Total allowances for credit losses$533 $181 
SDG&E:  
Accounts receivable – trade, net
$116 $52 
Accounts receivable – other, net
27 25 
Other long-term assets1 1 
Total allowances for credit losses$144 $78 
SoCalGas:  
Accounts receivable – trade, net
$306 $83 
Accounts receivable – other, net
25 15 
Total allowances for credit losses$331 $98 
Schedule of Related Party Transactions
TRANSACTIONS WITH AFFILIATES
We summarize amounts due from and to unconsolidated affiliates at our Registrants in the following table.
AMOUNTS DUE FROM (TO) UNCONSOLIDATED AFFILIATES
(Dollars in millions)
 December 31,
 20232022
Sempra:  
Tax sharing arrangement with Oncor Holdings$25 $41 
Various affiliates6 13 
Total due from unconsolidated affiliates – current$31 $54 
TAG Pipelines – 5.5% Note due January 9, 2024(1)
$(5)$— 
Total due to unconsolidated affiliates – current$(5)$— 
TAG Pipelines(1):
5.5% Note due January 9, 2024
$— $(40)
5.5% Note due January 14, 2025
(24)(23)
5.5% Note due July 16, 2025
(23)(21)
5.5% Note due January 14, 2026
(20)(19)
5.5% Note due July 14, 2026
(11)(11)
5.5% Note due January 19, 2027
(14)— 
5.5% Note due July 21, 2027
(17)— 
TAG Norte – 5.74% Note due December 17, 2029
(198)(187)
Total due to unconsolidated affiliates – noncurrent$(307)$(301)
SDG&E:  
Sempra$(44)$(49)
SoCalGas(21)(72)
Various affiliates(8)(14)
Total due to unconsolidated affiliates – current$(73)$(135)
Income taxes due from Sempra(2)
$246 $10 
SoCalGas:  
SDG&E$21 $72 
Various affiliates1 5 
Total due from unconsolidated affiliates – current$22 $77 
Sempra$(38)$(36)
Total due to unconsolidated affiliates – current$(38)$(36)
Income taxes due from (to) Sempra(2)
$6 $(16)
(1)    U.S. dollar-denominated loans at fixed interest rates. Amounts include principal balances plus accumulated interest outstanding.
(2)    SDG&E and SoCalGas are included in the consolidated income tax return of Sempra, and their respective income tax expense is computed as an amount equal to that which would result from each company having always filed a separate return. Amounts include current and noncurrent income taxes due to/from Sempra.
The following table summarizes income statement information from unconsolidated affiliates.
INCOME STATEMENT IMPACT FROM UNCONSOLIDATED AFFILIATES
(Dollars in millions)
 Years ended December 31,
 202320222021
Sempra:
Revenues$44 $41 $31 
Cost of sales— — 11 
Interest income— 16 50 
Interest expense15 15 15 
SDG&E:
Revenues$21 $16 $11 
Cost of sales113 92 103 
SoCalGas:
Revenues$124 $100 $98 
Cost of sales(1)
35 (9)1 
(1)    Includes net commodity costs from natural gas transactions with unconsolidated affiliates.
Schedule of Inventory
The components of inventories are as follows:
INVENTORY BALANCES AT DECEMBER 31
(Dollars in millions)
SempraSDG&ESoCalGas
202320222023202220232022
Natural gas$174 $106 $1 $1 $155 $74 
LNG9 62 — — — — 
Materials and supplies299 235 152 133 122 85 
Total$482 $403 $153 $134 $277 $159 
Schedule of Regulated Operations
The following table summarizes the location of balances related to the Wildfire Fund on Sempra’s and SDG&E’s Consolidated Balance Sheets.
WILDFIRE FUND
(Dollars in millions)
December 31,
Location20232022
Wildfire Fund asset:
Current
Prepaid Expenses
$28 $29 
Noncurrent
Wildfire Fund
269 303 
Wildfire Fund obligation:
Current
Other Current Liabilities
13 13 
NoncurrentDeferred Credits and Other42 53 
The CPUC approved the following cost of capital for SDG&E and SoCalGas that became effective on January 1, 2020 and remained in effect through December 31, 2022.
AUTHORIZED COST OF CAPITAL FOR 2020 – 2022
SDG&ESoCalGas
Authorized weightingReturn on
rate base		Weighted
return on
rate base		Authorized weightingReturn on
rate base		Weighted
return on
rate base
45.25 %4.59 %2.08 %Long-Term Debt45.60 %4.23 %1.93 %
2.75 6.22 0.17 Preferred Equity2.40 6.00 0.14 
52.00 10.20 5.30 Common Equity52.00 10.05 5.23 
100.00 %7.55 %100.00 %7.30 %
AUTHORIZED COST OF CAPITAL FOR 2023
SDG&ESoCalGas
Authorized weightingReturn on
rate base
Weighted
return on
rate base(1)
Authorized weightingReturn on
rate base		Weighted
return on
rate base
45.25 %4.05 %1.83 %Long-Term Debt45.60 %4.07 %1.86 %
2.75 6.22 0.17 Preferred Equity2.40 6.00 0.14 
52.00 9.95 5.17 Common Equity52.00 9.80 5.10 
100.00 %7.18 %100.00 %7.10 %
(1)    Total weighted return on rate base does not sum due to rounding differences.

For the measurement period that ended on September 30, 2023, SDG&E’s CCM benchmark rate was 4.367% based on Moody’s Baa- utility bond index and SoCalGas’ CCM benchmark rate was 4.074% based on Moody’s A- utility bond index. The actual average rate during the measurement period was 5.777% for SDG&E and 5.472% for SoCalGas. As such, the CCM was triggered for SDG&E and SoCalGas on September 30, 2023. In December 2023, the CPUC approved increases to SDG&E’s and SoCalGas’ authorized rates of return effective January 1, 2024, which will remain in effect through December 31, 2025, subject to the CCM. In January 2024, several parties submitted a request for the CPUC to review such approval.
AUTHORIZED COST OF CAPITAL FOR 2024 – 2025
SDG&ESoCalGas
Authorized weightingReturn on
rate base		Weighted
return on
rate base		Authorized weightingReturn on
rate base		Weighted
return on
rate base
45.25 %4.34 %1.96 %Long-Term Debt45.60 %4.54 %2.07 %
2.75 6.22 0.17 Preferred Equity2.40 6.00 0.14 
52.00 10.65 5.54 Common Equity52.00 10.50 5.46 
100.00 %7.67 %100.00 %7.67 %
Schedule of Other Intangible Assets
Other Intangible Assets included on Sempra’s Consolidated Balance Sheets are as follows:
OTHER INTANGIBLE ASSETS
(Dollars in millions)
 Amortization period
(years)		December 31,
 20232022
Sempra:
Renewable energy transmission and consumption permits
15 to 19
$169 $169 
O&M agreement
23
66 66 
ESJ PPA
14
190 190 
Other
10 to indefinite
15 15 
  440 440 
Less accumulated amortization:   
Renewable energy transmission and consumption permits(59)(50)
O&M agreement(17)(15)
ESJ PPA(37)(23)
Other (9)(8)
  (122)(96)
  $318 $344 
Schedule of Property, Plant and Equipment
PROPERTY, PLANT AND EQUIPMENT BY MAJOR FUNCTIONAL CATEGORY
(Dollars in millions)
 December 31,Depreciation rates for years ended
December 31,
 20232022202320222021
SDG&E:     
Natural gas operations$4,175 $3,707 2.60 %2.57 %2.55 %
Electric distribution11,597 10,271 4.05 3.94 3.93 
Electric transmission(1)
8,504 8,061 3.04 3.03 3.02 
Electric generation2,515 2,461 5.18 5.11 4.74 
Other electric2,507 2,211 7.05 7.03 7.23 
Construction work in progress(1)
1,620 1,863 
N/A
N/A
N/A
Total SDG&E30,918 28,574   
SoCalGas:     
Natural gas operations25,506 23,646 3.64 3.57 3.65 
Other non-utility50 50 1.03 1.54 2.23 
Construction work in progress1,469 1,362 
N/A
N/A
N/A
Total SoCalGas27,025 25,058    
Other Sempra(2):
  Estimated useful livesWeighted-average useful life
Land and land rights488 476 
16 to 44 years(3)
37
Machinery and equipment:    
Pipelines and storage3,883 3,813 
41 to 49 years
42
Generating plants1,815 1,803 
11 to 28 years
26
LNG terminal1,139 1,138 
43 years
43
Refined products terminals656 643 
38 years
38
Other346 344 
1 to 21 years
15
Construction work in progress5,930 1,757 N/AN/A
Other295 287 
2 to 34 years
15
 14,552 10,261   
Total Sempra$72,495 $63,893   
(1)    At December 31, 2023, includes $554 in electric transmission assets and $7 in construction work in progress related to SDG&E’s 86% interest in the Southwest Powerlink transmission line, jointly owned by SDG&E with other utilities. SDG&E, and each of the other owners, holds its undivided interest as a tenant in common in the property. Each owner is responsible for its share of the project and participates in decisions concerning operations and capital expenditures. SDG&E’s share of operating expenses is included in Sempra’s and SDG&E’s Consolidated Statements of Operations.
(2)    Includes $310 and $246 at December 31, 2023 and 2022, respectively, of utility plant, primarily pipelines and other distribution assets at Ecogas.
(3)    Estimated useful lives are for land rights.
DEPRECIATION EXPENSE
(Dollars in millions)
 Years ended December 31,
 202320222021
Sempra$2,202 $1,995 $1,833 
SDG&E1,092 977 884 
SoCalGas833 755 711 
ACCUMULATED DEPRECIATION AND AMORTIZATION
(Dollars in millions)
 December 31,
 20232022
SDG&E:  
Accumulated depreciation:  
Natural gas operations$1,048 $979 
Electric transmission, distribution and generation(1)
6,321 5,789 
Total SDG&E7,369 6,768 
SoCalGas:  
Accumulated depreciation:
Natural gas operations7,835 7,291 
Other non-utility17 17 
Total SoCalGas7,852 7,308 
Other Sempra:  
Accumulated depreciation – other(2)
2,314 2,035 
Total Sempra $17,535 $16,111 
(1)    Includes $323 at December 31, 2023 related to SDG&E’s 86% interest in the Southwest Powerlink transmission line, jointly owned by SDG&E and other utilities.
(2)    Includes $82 and $65 at December 31, 2023 and 2022, respectively, of accumulated depreciation for utility plant at Ecogas.
Schedule of Capitalized Financing Costs
The table below summarizes capitalized financing costs, comprised of AFUDC and capitalized interest.
CAPITALIZED FINANCING COSTS
(Dollars in millions)
 Years ended December 31,
 202320222021
Sempra$448 $255 $217 
SDG&E116 116 106 
SoCalGas77 73 64 
Schedule of Asset Retirement Obligations
The changes in AROs are as follows:
CHANGES IN ASSET RETIREMENT OBLIGATIONS
(Dollars in millions)
 SempraSDG&ESoCalGas
 202320222021202320222021202320222021
Balance at January 1(1)
$3,712 $3,538 $3,289 $887 $890 $876 $2,743 $2,582 $2,368 
Accretion expense148 141 133 37 37 38 106 101 92 
Liabilities incurred and acquired18 21 20 15 6 2 — — — 
Payments(62)(57)(63)(59)(54)(60)(3)(3)(3)
Revisions(2)
15 69 159 14 8 34 1 63 125 
Balance at December 31(1)
$3,831 $3,712 $3,538 $894 $887 $890 $2,847 $2,743 $2,582 
(1)    Current portion of the ARO for Sempra is included in Other Current Liabilities on the Consolidated Balance Sheets.
(2)    SDG&E’s change in ARO in 2022 and 2021 includes $1 and $22, respectively, due to a revised estimate that is offset in noncurrent Regulatory Liabilities and Regulatory Assets, respectively, on the Consolidated Balance Sheets.
Schedule of Changes in Accumulated Other Comprehensive Income by Component The following tables present the changes in AOCI by component and amounts reclassified out of AOCI to net income, after amounts attributable to NCI.
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) BY COMPONENT(1)
(Dollars in millions)
 Foreign
currency
translation
adjustments		Financial
instruments
Pension
and PBOP
Total
AOCI
Sempra:
Balance at December 31, 2020$(64)$(331)$(105)$(500)
OCI before reclassifications(2)
(34)62 8 36 
Amounts reclassified from AOCI(3)
19 113 14 146 
Net OCI(2)(3)
(15)175 22 182 
Balance at December 31, 2021(79)(156)(83)(318)
OCI before reclassifications10 147 (11)146 
Amounts reclassified from AOCI(4)
10 19 8 37 
Net OCI(4)
20 166 (3)183 
Balance at December 31, 2022(59)10 (86)(135)
OCI before reclassifications23 59 (35)47 
Amounts reclassified from AOCI(5)
— (66)4 (62)
Net OCI(5)
23 (7)(31)(15)
Balance at December 31, 2023$(36)$3 $(117)$(150)
SDG&E:
Balance at December 31, 2020$(10)$(10)
OCI before reclassifications(1)(1)
Amounts reclassified from AOCI1 1 
Net OCI— — 
Balance at December 31, 2021(10)(10)
OCI before reclassifications2 2 
Amounts reclassified from AOCI1 1 
Net OCI3 3 
Balance at December 31, 2022(7)(7)
OCI before reclassifications(2)(2)
Amounts reclassified from AOCI1 1 
Net OCI(1)(1)
Balance at December 31, 2023$(8)$(8)
SoCalGas:
Balance at December 31, 2020$(13)$(18)$(31)
OCI before reclassifications— (2)(2)
Amounts reclassified from AOCI— 2 2 
Net OCI— — — 
Balance at December 31, 2021(13)(18)(31)
OCI before reclassifications— 4 4 
Amounts reclassified from AOCI1 2 3 
Net OCI1 6 7 
Balance at December 31, 2022(12)(12)(24)
OCI before reclassifications— (1)(1)
Amounts reclassified from AOCI1 1 2 
Net OCI1 — 1 
Balance at December 31, 2023$(11)$(12)$(23)
(1)    All amounts are net of income tax, if subject to tax, and after NCI.
(2)    Total AOCI includes $(28) of foreign currency translation adjustments and $(16) of financial instruments associated with the IEnova exchange and cash tender offers in 2021. We discuss these transactions in Note 14 in “Noncontrolling Interests – SI Partners Subsidiaries.” These transactions did not impact the Consolidated Statement of Comprehensive Income (Loss).
(3)    Total AOCI includes $19 of foreign currency translation adjustments and $47 of financial instruments associated with the sale of NCI to KKR Pinnacle in 2021. We discuss this transaction in Note 14 in “Noncontrolling Interests – SI Partners.” This transaction did not impact the Consolidated Statement of Comprehensive Income (Loss).
(4)    Total AOCI includes $9 of foreign currency translation adjustments associated with the sale of NCI to ADIA in 2022. We discuss this transaction in Note 14 in “Noncontrolling Interests – SI Partners.” This transaction did not impact the Consolidated Statement of Comprehensive Income (Loss).
(5)    Total AOCI includes $(46) of financial instruments associated with sale of NCI to KKR Denali in 2023, which we discuss in Note 14 in “Noncontrolling Interests – SI Partners Subsidiaries.” This transaction did not impact the Consolidated Statement of Comprehensive Income (Loss).
Schedule of Reclassifications out Of Accumulated Other Comprehensive Income
RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
(Dollars in millions)
Details about AOCI componentsAmounts reclassified from AOCIAffected line item on
Consolidated Statements of Operations
 Years ended December 31, 
 202320222021 
Sempra:    
Foreign currency translation adjustments$— $1 $— Operation and Maintenance
Financial instruments:    
Interest rate instruments$1 $1 $11 Interest Expense
Interest rate instruments(48)29 73 
Equity Earnings(1)
Foreign exchange instruments1 (1)1 Revenues: Energy-Related Businesses
2 1 — Other Income, Net
Foreign exchange instruments2 — — 
Equity Earnings(1)
Interest rate and foreign exchange instruments(1)(2)1 Interest Expense
(6)(12)6 Other Income, Net
Total, before income tax(49)16 92  
6 (6)(24)Income Tax Expense
Total, net of income tax(43)10 68  
23 9 (2)Earnings Attributable to Noncontrolling Interests
Total, net of income tax and after NCI$(20)$19 $66  
Pension and PBOP(2):
   
Amortization of actuarial loss$3 $7 $8 Other Income, Net
Amortization of prior service cost2 4 4 Other Income, Net
Settlement charges— — 7 Other Income, Net
Total, before income tax5 11 19 
 (1)(3)(5)Income Tax Expense
Total, net of income tax$4 $8 $14  
Total reclassifications for the period, net of income
tax and after NCI
$(16)$28 $80  
SDG&E:    
Pension and PBOP(2):
    
Amortization of actuarial loss$— $1 $— Other Income, Net
Amortization of prior service cost1 — 1 Other Income, Net
Total reclassifications for the period, net of income
tax
$1 $1 $1  
SoCalGas:    
Financial instruments:    
Interest rate instruments$1 $1 $— Interest Expense
Pension and PBOP(2):
    
Amortization of actuarial loss$1 $2 $1 Other Expense, Net
Amortization of prior service cost1 1 1 Other Expense, Net
Total, before income tax232 
(1)(1)— Income Tax Benefit (Expense)
Total, net of income tax$1 $2 $2 
Total reclassifications for the period, net of income
tax
$2 $3 $2  
(1)    Equity earnings at our foreign equity method investees are recognized after tax.
(2)    Amounts are included in the computation of net periodic benefit cost (see “Net Periodic Benefit Cost” in Note 9).
Schedule of Other Income (expense)
Other Income, Net, on the Consolidated Statements of Operations consists of the following:
OTHER INCOME (EXPENSE), NET
(Dollars in millions)
 Years ended December 31,
 202320222021
Sempra:   
Allowance for equity funds used during construction$140 $143 $133 
Investment gains (losses), net(1)
28 (42)50 
Gains (losses) on interest rate and foreign exchange instruments, net4 11 (28)
Foreign currency transaction gains (losses), net(2)
2 (24)(18)
Non-service components of net periodic benefit cost(106)(59)(67)
Interest on regulatory balancing accounts, net79 26 6 
Sundry, net(16)(31)(18)
Total$131 $24 $58 
SDG&E:   
Allowance for equity funds used during construction$86 $88 $81 
Non-service components of net periodic benefit cost(19)(11)(13)
Interest on regulatory balancing accounts, net42 18 6 
Sundry, net(12)(3)(10)
Total$97 $92 $64 
SoCalGas:   
Allowance for equity funds used during construction$54 $55 $48 
Non-service components of net periodic benefit cost(80)(42)(40)
Interest on regulatory balancing accounts, net37 8 — 
Sundry, net(15)(29)(22)
Total$(4)$(8)$(14)
(1)    Represents net investment gains (losses) on dedicated assets in support of our executive retirement and deferred compensation plans. These amounts are offset by corresponding changes in compensation expense related to the plans, recorded in O&M on the Consolidated Statements of Operations.
(2)    Includes losses of $11 and $23 in 2022 and 2021, respectively, from translation to U.S. dollars of a Mexican peso-denominated loan to IMG, which are offset by corresponding amounts included in Equity Earnings on the Consolidated Statements of Operations.