Qualifying Debt - Subordinated Debt Issuances (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
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| Subordinated Debt | ||
| Debt Instrument [Line Items] | ||
| Principal | $ 1,000 | $ 1,000 |
| Unamortized Debt Issuance Costs | $ 8 | $ 8 |
| Subordinated Debentures Maturing June 2031 | ||
| Debt Instrument [Line Items] | ||
| Interest rate | 3.00% | 3.00% |
| Period of basis point spread | 2.25% | 2.25% |
| Subordinated Debentures Maturing June 2031 | Subordinated Debt | ||
| Debt Instrument [Line Items] | ||
| Interest rate | 3.00% | 3.00% |
| Principal | $ 600 | $ 600 |
| Unamortized Debt Issuance Costs | $ 4 | $ 4 |
| Subordinated Debentures Maturing November 2035 | ||
| Debt Instrument [Line Items] | ||
| Interest rate | 6.54% | 6.54% |
| Period of basis point spread | 2.85% | 2.85% |
| Subordinated Debentures Maturing November 2035 | Subordinated Debt | ||
| Debt Instrument [Line Items] | ||
| Interest rate | 6.54% | 6.54% |
| Principal | $ 400 | $ 400 |
| Unamortized Debt Issuance Costs | $ 4 | $ 4 |
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. No definition available.
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Stated interest rate of the subordinated debt. No definition available.
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