Fair Value of Assets and Liabilities - Schedule of Differences between the Fair Value Carrying Amount of Mortgages Held-for-sale and Aggregate Unpaid Principal Amount (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||
| Total loans | $ 88 | $ 151 |
| Held for sale | ||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||
| Total loans | 88 | 151 |
| Fair value carrying amount less aggregate unpaid principal - Total loans | (4) | (3) |
| Nonaccrual loans | 7 | 9 |
| Fair value carrying amount less aggregate unpaid principal - Nonaccrual loans | (4) | (3) |
| Held for sale | Aggregate unpaid principal | ||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||
| Total loans | 92 | 154 |
| Nonaccrual loans | $ 11 | $ 12 |
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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 This item represents the aggregate fair value of loans held as assets that are in nonaccrual status for which the fair value option has been elected, if the entity's policy is to recognize interest income separately from other changes in fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition For loans held as assets for which the fair value option has been elected, this item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of those loans that are in nonaccrual status. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition For loans held as assets for which the fair value option has been elected, this item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of those loans that are 90 days or more past due, in nonaccrual status, or both. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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