SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - CREDIT LOSSES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 519	$ 539	$ 188
Provision for expected credit losses	61	202	467
Write-offs	(193)	(222)	(116)
Reclassification to assets held for sale	(89)	0	0
Ending balance	298	519	539
Disposal Group Held-for-sale | SI Partners
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Expected credit losses included in liabilities held for sale	2
Accounts receivable – trade, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	235	447
Accounts receivable – other, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	47	53
Other long-term assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Other long-term assets	16	19
Other long-term assets | Related Party
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Other long-term assets	4	5
Deferred Credits and Other
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Maximum off balance sheet arrangement	5	5
SDG&E
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	114	144	78
Provision for expected credit losses	47	52	115
Write-offs	(81)	(82)	(49)
Ending balance	80	114	144
SDG&E | Accounts receivable – trade, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	49	81
SDG&E | Accounts receivable – other, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	26	25
SDG&E | Other long-term assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Other long-term assets	5	8
SoCalGas
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	285	331	98
Provision for expected credit losses	37	94	300
Write-offs	(108)	(140)	(67)
Ending balance	214	285	$ 331
SoCalGas | Accounts receivable – trade, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	186	251
SoCalGas | Accounts receivable – other, net
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable - trade and other, net	21	28
SoCalGas | Other long-term assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Other long-term assets	$ 7	$ 6