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SEMPRA - SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - NARRATIVE (Details) - USD ($)
Feb. 28, 2023
Apr. 06, 2022
Jan. 11, 2022
Nov. 17, 2021
Aug. 04, 2020
Jul. 01, 2020
Jul. 06, 2020
Sep. 11, 2007
Subsequent Event                
Maximum amount of shares that may yet be purchased $ 1,250,000,000              
Shares may yet be purchased (in shares) 19,632,529              
Common Stock                
Stock repurchase program, authorized amount             $ 2,000,000,000 $ 2,000,000,000
Number of shares authorized to be repurchased (in shares)             25,000,000 40,000,000
ASR program, amount prepaid   $ 250,000,000 $ 200,000,000     $ 500,000,000    
Common shares repurchased (in shares)   1,471,957 1,472,756 2,422,758 4,089,375      
Common shares repurchased, average price (in dollars per share)   $ 169.84 $ 135.80 $ 123.83 $ 122.27      
Common stock acquired (in shares)       $ 300,000,000