REGULATORY MATTERS - REGULATORY ASSETS NOT EARNING A RETURN AND EARNING A RETURN (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Public Utilities, General Disclosures [Line Items]
Amortization of regulatory asset		$ 16	$ 14	$ 12
SDG&E
Public Utilities, General Disclosures [Line Items]
Amortization of regulatory asset		$ 7	7	6
SDG&E | Sunrise Powerlink fire mitigation
Public Utilities, General Disclosures [Line Items]
Amortization period (in years)		44 years
SoCalGas
Public Utilities, General Disclosures [Line Items]
Amortization of regulatory asset		$ 9	$ 7	$ 6
SoCalGas | Catastrophic Event Memorandum Account And COVID -19 Pandemic Protections Memorandum Account
Public Utilities, General Disclosures [Line Items]
Public utilities, write-off of disallowed costs, before tax		36
Public utilities, write-off of disallowed costs, after tax		25
SoCalGas | Catastrophic Event Memorandum Account And COVID -19 Pandemic Protections Memorandum Account | Utilities: Natural Gas Revenue
Public Utilities, General Disclosures [Line Items]
Public utilities, write-off of disallowed costs, before tax		29
SoCalGas | Catastrophic Event Memorandum Account And COVID -19 Pandemic Protections Memorandum Account | Other Nonoperating Income (Expense)
Public Utilities, General Disclosures [Line Items]
Public utilities, write-off of disallowed costs, before tax		$ 7
SoCalGas | Catastrophic Event Memorandum Account And COVID -19 Pandemic Protections Memorandum Account | California Public Utilities Commission
Public Utilities, General Disclosures [Line Items]
Approved recovery amount	$ 19
Requested recovery amount	$ 55
Minimum
Public Utilities, General Disclosures [Line Items]
Amortization period (in years)		5 years
Maximum
Public Utilities, General Disclosures [Line Items]
Regulatory asset, recovery (in years)		4 years
Amortization period (in years)		69 years