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v3.26.1

Borrowings - Schedule of Components of Long-Term Debt (Details) - USD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Debt Instrument [Line Items] |  |
Total long-term debt | $ 10,967 | $ 9,917
Parent Company |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 5,803 | 5,106
Parent Company | Senior Notes Due 2027-2037 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Senior notes | $ 5,358 | 4,659
Parent Company | Senior Notes Due 2027-2037 | Senior Notes | Minimum |  |
Debt Instrument [Line Items] |  |
Stated rate | 2.25% |
Parent Company | Senior Notes Due 2027-2037 | Senior Notes | Maximum |  |
Debt Instrument [Line Items] |  |
Stated rate | 6.40% |
Parent Company | Junior Subordinated Debentures Due 2028-2037 | Subordinated notes |  |
Debt Instrument [Line Items] |  |
Junior subordinated debentures | $ 445 | 447
Parent Company | Junior Subordinated Debentures Due 2028-2037 | Subordinated notes | Minimum |  |
Debt Instrument [Line Items] |  |
Stated rate | 4.69% |
Parent Company | Junior Subordinated Debentures Due 2028-2037 | Subordinated notes | Maximum |  |
Debt Instrument [Line Items] |  |
Stated rate | 7.75% |
Subsidiaries |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ 5,164 | 4,811
Subsidiaries | Senior Notes Due 2027-2039 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Senior notes | $ 2,210 | 2,229
Subsidiaries | Senior Notes Due 2027-2039 | Senior Notes | Minimum |  |
Debt Instrument [Line Items] |  |
Stated rate | 3.76% |
Subsidiaries | Senior Notes Due 2027-2039 | Senior Notes | Maximum |  |
Debt Instrument [Line Items] |  |
Stated rate | 5.85% |
Subsidiaries | Subordinated Notes Due 2026- 2032 | Subordinated notes |  |
Debt Instrument [Line Items] |  |
Junior subordinated debentures | $ 1,322 | 1,932
Subsidiaries | Subordinated Notes Due 2026- 2032 | Subordinated notes | Minimum |  |
Debt Instrument [Line Items] |  |
Stated rate | 3.90% |
Subsidiaries | Subordinated Notes Due 2026- 2032 | Subordinated notes | Maximum |  |
Debt Instrument [Line Items] |  |
Stated rate | 6.95% |
Subsidiaries | Federal Home Loan Bank advances |  |
Debt Instrument [Line Items] |  |
Federal Home Loan Bank advances | $ 1,556 | 560
Subsidiaries | Federal Home Loan Bank advances | Minimum |  |
Debt Instrument [Line Items] |  |
Stated rate | 1.39% |
Subsidiaries | Federal Home Loan Bank advances | Maximum |  |
Debt Instrument [Line Items] |  |
Stated rate | 7.36% |
Subsidiaries | Secured borrowing |  |
Debt Instrument [Line Items] |  |
Other long-term debt | $ 76 | $ 90

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