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SHARE-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Schedule Of Share-based Compensation Expense Total share-based compensation expense for all of Sempra’s share-based awards was comprised as follows:
SHARE-BASED COMPENSATION EXPENSE
(Dollars in millions)
 Years ended December 31,
 202320222021
Sempra:
Share-based compensation expense, before income taxes(1)
$71 $61 $58 
Income tax benefit(1)
(9)(17)(16)
$62 $44 $42 
Capitalized share-based compensation cost$12 $11 $9 
Excess income tax (benefit) deficiency(6)(3)(9)
SDG&E:
Share-based compensation expense, before income taxes$13 $11 $10 
Income tax benefit(2)(3)(3)
$11 $8 $7 
Capitalized share-based compensation cost$7 $6 $5 
Excess income tax (benefit) deficiency(1)— (1)
SoCalGas:   
Share-based compensation expense, before income taxes$18 $17 $14 
Income tax benefit(3)(5)(4)
$15 $12 $10 
Capitalized share-based compensation cost$5 $5 $4 
Excess income tax (benefit) deficiency(1)— (1)
(1)    Includes activity of awards issued from the IEnova 2013 LTIP, which settled in cash upon vesting based on the price of IEnova’s common stock.
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions To calculate this fair value, we used the Black-Scholes model with the following weighted-average assumptions:
KEY ASSUMPTIONS FOR STOCK OPTIONS GRANTED
 Years ended December 31,
202320222021
Sempra:
Stock price volatility27.35 %26.08 %26.57 %
Expected term5.36 years5.36 years5.36 years
Risk-free rate of return3.89 %1.40 %0.41 %
Annual dividend yield2.98 %3.33 %3.38 %
Schedule Of Non-qualified Stock Options
The following table shows a summary of nonqualified stock options at December 31, 2023 and activity for the year then ended:
NONQUALIFIED STOCK OPTIONS
 Common shares under optionsWeighted- average exercise priceWeighted- average remaining contractual term (in years)Aggregate intrinsic value
(in millions)
Sempra:
Outstanding at January 1, 20231,433,224 $63.51   
Granted326,574 $76.86 
Outstanding at December 31, 20231,759,798 $65.99 7.14$15 
Vested or expected to vest at December 31, 20231,759,798 $65.99 7.14$15 
Exercisable at December 31, 2023991,618 $63.02 6.30$12 
Schedule Of Restricted Stock Awards And Units Valuation Assumptions Below are key assumptions for RSUs granted in the last three years:
KEY ASSUMPTIONS FOR RSUs GRANTED
 Years ended December 31,
 202320222021
Sempra:
Stock price volatility35.31 %32.82 %33.39 %
Risk-free rate of return4.13 %1.05 %0.16 %
Schedule Of Restricted Stock Units
The following table shows a summary of RSUs at December 31, 2023 and activity for the year then ended:
RESTRICTED STOCK UNITS  
 
Performance-based
restricted stock units
Service-based
restricted stock units
 Units
Weighted- average
grant-date
fair value
Units
Weighted- average
grant-date
fair value
Sempra:
Nonvested at January 1, 20231,679,590 $72.20 551,274 $65.43 
Granted661,620 $82.64 272,729 $76.76 
Vested(443,854)$77.86 (266,962)$65.81 
Forfeited(67,372)$75.93 (32,072)$87.08 
Nonvested at December 31, 2023(1)
1,829,984 $74.46 524,969 $70.63 
Expected to vest at December 31, 20231,804,044 $74.38 512,658 $70.54 
(1)    Each RSU represents the right to receive one share of our common stock if applicable performance conditions are satisfied. For all performance-based RSUs, up to an additional 100% of the shares represented by the RSUs may be issued if Sempra exceeds target performance conditions.