SEMPRA - POTENTIAL DIVESTITURES - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2025 USD ($) appointee	Sep. 30, 2025 USD ($)	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)		Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity	$ 38,286.0	$ 38,286.0	$ 38,286.0	$ 38,296.0	$ 37,788.0	[1]	$ 35,880.0	$ 35,419.0	$ 33,654.0
KKR Partners
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Limited Partnership Agreement, Board Of Managers, Number Of Appointees | appointee	4
Post-closing additional distribution, percentage to be received	31.50%
ADIA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Limited Partnership Agreement, Board Of Managers, Number Of Appointees | appointee	1
Sole risk project, interest remaining	10.00%	10.00%	10.00%
Sempra
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Limited Partnership Agreement, Board Of Managers, Number Of Appointees | appointee	2
Sole risk project, interest remaining	90.00%	90.00%	90.00%
SI Partners
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Required quarterly distributions, percentage of distributable cash flow	85.00%
Port Arthur LNG II | Port Arthur LNG
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Post-closing distribution, true-up payment to be received	$ 1,900.0
Port Arthur LNG II | Shared Common Facilities
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity ownership interest (as a percent)	50.00%	50.00%	50.00%
Accumulated other comprehensive income (loss)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity	$ (212.0)	$ (212.0)	$ (212.0)	$ (215.0)	$ (166.0)		$ (185.0)	$ (121.0)	$ (150.0)
Disposal Group Held-for-sale | SI Partners
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage sold	45.00%	45.00%	45.00%
Consideration to be received	$ 9,990.0	$ 9,990.0	$ 9,990.0
Cash consideration to be received at closing	4,650.0	4,650.0	4,650.0
Expected consideration, receivable instrument, face amount	$ 4,140.0	$ 4,140.0	$ 4,140.0
Expected consideration, receivable instrument, stated rate	7.50%	7.50%	7.50%
Expected consideration, receivable instrument, capitalized amount	$ 4,720.0	$ 4,720.0	$ 4,720.0
Expected consideration, promissory notes receivable, face amount	1,200.0	1,200.0	1,200.0
Expected consideration, promissory notes receivable, capitalized amount	2,290.0	2,290.0	2,290.0
Transaction fees	337.5	337.5	337.5
Development credit payable	$ 340.0	$ 340.0	$ 340.0
Development credit payable, period	2 years	2 years	2 years
Ticking fee receivable, percent	0.625%	0.625%	0.625%
Termination fee to be received if closing not completed	$ 414.0	$ 414.0	$ 414.0
Ownership percentage expected to be retained after sale	25.00%	25.00%	25.00%
Income tax expense from divestiture	$ 514.0	$ 514.0	$ 552.0
Co-sale rights threshold	50.00%	50.00%	50.00%
Disposal Group Held-for-sale | SI Partners | KKR Partners
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage expected to be retained after sale	65.00%	65.00%	65.00%
Disposal Group Held-for-sale | SI Partners | ADIA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage expected to be retained after sale	10.00%	10.00%	10.00%
Disposal Group Held-for-sale | SI Partners | Note Receivable, Stated Rate, Period One
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Expected consideration, promissory notes receivable, stated rate	8.50%	8.50%	8.50%
Disposal Group Held-for-sale | SI Partners | Note Receivable, Stated Rate, Period Two
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Expected consideration, promissory notes receivable, stated rate	10.00%	10.00%	10.00%
Disposal Group Held-for-sale | SI Partners | Accumulated other comprehensive income (loss)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity	$ (28.0)	$ (28.0)	$ (28.0)
Disposal Group Held-for-sale | Ecogas
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense from divestiture			38.0
Income tax expense from divestiture, after noncontrolling interest			$ 26.0

[1] Derived from audited financial statements.