SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - CREDIT LOSSES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 533	$ 181	$ 136
Provisions for expected credit losses	203	468	123
Write-offs	(222)	(116)	(78)
Ending balance	514	533	181
Accounts receivable - trade and other, net	53	52
Accounts receivable – trade, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	447	480
Accounts receivable – other, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	53	52
Other long-term assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Other long-term assets	14	1
Other long-term assets | KKR
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Other long-term assets	5	6
Deferred Credits and Other | Sempra Infrastructure
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss related to guarantees	5	5
SDG&E
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	144	78	66
Provisions for expected credit losses	52	115	54
Write-offs	(82)	(49)	(42)
Ending balance	114	144	78
SDG&E | Accounts receivable – trade, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	81	116
SDG&E | Accounts receivable – other, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	25	27
SDG&E | Other long-term assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Other long-term assets	8	1
SoCalGas
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	331	98	69
Provisions for expected credit losses	94	300	65
Write-offs	(140)	(67)	(36)
Ending balance	285	331	$ 98
SoCalGas | Accounts receivable – trade, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	251	306
SoCalGas | Accounts receivable – other, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	28	25
SoCalGas | Other long-term assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Other long-term assets	$ 6	$ 0