REGULATORY MATTERS - COST OF CAPITAL (Details) - California Public Utilities Commission	3 Months Ended	12 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Public Utilities, General Disclosures [Line Items]
CCM benchmark rate, variable rate (as a percent)	1.00%
SDG&E
Public Utilities, General Disclosures [Line Items]
Authorized weighting (as a percent)	100.00%
Weighted return on rate base (as a percent)		7.45%
SDG&E | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Weighted requested return on rate base (as a percent)	7.41%
SDG&E | Authorized weighting
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	45.25%
SDG&E | Authorized weighting | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	2.75%
SDG&E | Authorized weighting | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	52.00%
SDG&E | Return on rate base
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)		4.34%
SDG&E | Return on rate base | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested debt capital structure (as a percent)	4.59%
SDG&E | Return on rate base | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)		6.22%
SDG&E | Return on rate base | Preferred Equity | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested return on equity (as a percent)	6.22%
SDG&E | Return on rate base | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)		10.23%
SDG&E | Return on rate base | Common Equity | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested return on equity (as a percent)	9.93%
SDG&E | Weighted return on rate base
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)		1.96%
SDG&E | Weighted return on rate base | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested debt capital structure (as a percent)	2.08%
SDG&E | Weighted return on rate base | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)		0.17%
SDG&E | Weighted return on rate base | Preferred Equity | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested return on equity (as a percent)	0.17%
SDG&E | Weighted return on rate base | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)		5.32%
SDG&E | Weighted return on rate base | Common Equity | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested return on equity (as a percent)	5.16%
SoCalGas
Public Utilities, General Disclosures [Line Items]
Authorized weighting (as a percent)	100.00%
Weighted return on rate base (as a percent)		7.49%
SoCalGas | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Weighted requested return on rate base (as a percent)	7.52%
SoCalGas | Authorized weighting
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)	45.60%
SoCalGas | Authorized weighting | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	2.40%
SoCalGas | Authorized weighting | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)	52.00%
SoCalGas | Return on rate base
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)		4.63%
SoCalGas | Return on rate base | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested debt capital structure (as a percent)	5.02%
SoCalGas | Return on rate base | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)		6.00%
SoCalGas | Return on rate base | Preferred Equity | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested return on equity (as a percent)	6.00%
SoCalGas | Return on rate base | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)		10.08%
SoCalGas | Return on rate base | Common Equity | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested return on equity (as a percent)	9.78%
SoCalGas | Weighted return on rate base
Public Utilities, General Disclosures [Line Items]
Approved debt capital structure (as a percent)		2.11%
SoCalGas | Weighted return on rate base | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested debt capital structure (as a percent)	2.29%
SoCalGas | Weighted return on rate base | Preferred Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)		0.14%
SoCalGas | Weighted return on rate base | Preferred Equity | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested return on equity (as a percent)	0.14%
SoCalGas | Weighted return on rate base | Common Equity
Public Utilities, General Disclosures [Line Items]
Approved return on equity (as a percent)		5.24%
SoCalGas | Weighted return on rate base | Common Equity | Proposed Cost of Capital 2026-2028
Public Utilities, General Disclosures [Line Items]
Requested return on equity (as a percent)	5.09%