SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF PARENT - Footnote 3 Narrative (Details)	1 Months Ended
	Aug. 31, 2025 USD ($) business_day	Dec. 31, 2025 USD ($) lender
Condensed Financial Information Of Parent [Line Items]
Maximum borrowing capacity		$ 10,200,000,000
Committed lines of credit, capacity for issuance of letters of credit		200,000,000
Line of credit, increase limit		$ 500,000,000
Maximum ratio of indebtedness to total capitalization		0.65
2026		$ 1,804,000,000
2027		1,450,000,000
2028		1,605,000,000
2029		500,000,000
2030		1,450,000,000
Thereafter		$ 23,058,000,000
6.375%, Fixed-To-Fixed Reset Rate Junior Subordinated Notes, April 1, 2056 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Debt amount	$ 800,000,000
Stated percentage rate	6.375%
Number of days before interest rate period | business_day	2
Variable percentage rate	2.632%
Proceeds from issuance of debt	$ 791,000,000
6.375%, Fixed-To-Fixed Reset Rate Junior Subordinated Notes, April 1, 2056 | Junior Subordinated Debt | Debt Instrument, Redemption, Term One
Condensed Financial Information Of Parent [Line Items]
Debt instrument, redemption price, percentage	100.00%
6.375%, Fixed-To-Fixed Reset Rate Junior Subordinated Notes, April 1, 2056 | Junior Subordinated Debt | Debt Instrument, Redemption, Term Two
Condensed Financial Information Of Parent [Line Items]
Debt instrument, redemption price, percentage	100.00%
6.375%, Fixed-To-Fixed Reset Rate Junior Subordinated Notes, April 1, 2056 | Junior Subordinated Debt | Debt Instrument, Redemption, Term Three
Condensed Financial Information Of Parent [Line Items]
Debt instrument, redemption price, percentage	102.00%
Other Long-Term Debt, 4.125% Junior Subordinated Notes Due 2052 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		4.125%
6.40% Junior Subordinated Notes, Due October 1, 2054 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		6.40%
6.875% Junior Subordinated Notes, Due October 1, 2054 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		6.875%
6.550% Junior Subordinated Notes Due 2055 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		6.55%
6.625% Junior Subordinated Notes Due 2055 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		6.625%
Other Long-Term Debt, 5.75% Junior Subordinated Notes Due 2079 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		5.75%
Parent Company
Condensed Financial Information Of Parent [Line Items]
Maximum borrowing capacity		$ 4,000,000,000.0
Amount available		$ 3,000,000,000.0
Number of lenders | lender		23
Share of facility held by lenders (as a percent)		6.00%
Committed lines of credit, capacity for issuance of letters of credit		$ 200,000,000
Line of credit, increase limit		$ 500,000,000
Maximum ratio of indebtedness to total capitalization		0.65
2026		$ 550,000,000
2027		750,000,000
2028		1,000,000,000.0
2029		500,000,000
2030		0
Thereafter		$ 9,200,000,000
Parent Company | 6.375%, Fixed-To-Fixed Reset Rate Junior Subordinated Notes, April 1, 2056 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Debt amount	$ 800,000,000
Stated percentage rate	6.375%
Number of days before interest rate period | business_day	2
Variable percentage rate	2.632%
Proceeds from issuance of debt	$ 791,000,000
Parent Company | 6.375%, Fixed-To-Fixed Reset Rate Junior Subordinated Notes, April 1, 2056 | Junior Subordinated Debt | Debt Instrument, Redemption, Term One
Condensed Financial Information Of Parent [Line Items]
Debt instrument, redemption price, percentage	100.00%
Parent Company | 6.375%, Fixed-To-Fixed Reset Rate Junior Subordinated Notes, April 1, 2056 | Junior Subordinated Debt | Debt Instrument, Redemption, Term Two
Condensed Financial Information Of Parent [Line Items]
Debt instrument, redemption price, percentage	100.00%
Parent Company | 6.375%, Fixed-To-Fixed Reset Rate Junior Subordinated Notes, April 1, 2056 | Junior Subordinated Debt | Debt Instrument, Redemption, Term Three
Condensed Financial Information Of Parent [Line Items]
Debt instrument, redemption price, percentage	102.00%
Parent Company | Other Long-Term Debt, 4.125% Junior Subordinated Notes Due 2052 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		4.125%
Parent Company | 6.40% Junior Subordinated Notes, Due October 1, 2054 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		6.40%
Parent Company | 6.875% Junior Subordinated Notes, Due October 1, 2054 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		6.875%
Parent Company | 6.550% Junior Subordinated Notes Due 2055 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		6.55%
Parent Company | 6.625% Junior Subordinated Notes Due 2055 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		6.625%
Parent Company | Other Long-Term Debt, 5.75% Junior Subordinated Notes Due 2079 | Junior Subordinated Debt
Condensed Financial Information Of Parent [Line Items]
Stated percentage rate		5.75%
Other Sempra
Condensed Financial Information Of Parent [Line Items]
Maximum borrowing capacity		$ 4,000,000,000
2026		550,000,000
2027		750,000,000
2028		1,000,000,000
2029		500,000,000
2030		0
Thereafter		$ 9,158,000,000