GENERAL INFORMATION AND OTHER FINANCIAL DATA - CREDIT LOSSES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 533	$ 181
Provisions for expected credit losses	42	117
Write-offs	(50)	(20)
Ending balance	525	278
Allowance for credit losses	6		$ 6
Accounts receivable – trade, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	457		480
Accounts receivable – other, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	57		52
Other long-term assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Expected credit losses, noncurrent	11		1
Other long-term assets | KKR
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Expected credit losses, noncurrent	6		6
Deferred Credits and Other | Sempra Infrastructure
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses	5		5
SDG&E
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	144	78
Provisions for expected credit losses	6	38
Write-offs	(17)	(11)
Ending balance	133	105
SDG&E | Accounts receivable – trade, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	97		116
SDG&E | Accounts receivable – other, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	28		27
SDG&E | Other long-term assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Expected credit losses, noncurrent	8		1
SoCalGas
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	331	98
Provisions for expected credit losses	26	77
Write-offs	(33)	(9)
Ending balance	324	$ 166
SoCalGas | Accounts receivable – trade, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	292		306
SoCalGas | Accounts receivable – other, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	29		25
SoCalGas | Other long-term assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Expected credit losses, noncurrent	$ 3		$ 0