Investment Securities - Narrative (Details) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
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Sep. 30, 2026
USD ($)
investment
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Sep. 30, 2025
USD ($)
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Sep. 30, 2026
USD ($)
investment
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Sep. 30, 2025
USD ($)
|
Dec. 31, 2025
USD ($)
investment
|
|
| Investments, Debt and Equity Securities [Abstract] | |||||
| Interest receivable | $ 14 | $ 14 | $ 14 | ||
| Number of investment securities in an unrealized loss position | investment | 1,854 | 1,854 | 1,355 | ||
| Proceeds from sales and redemptions | $ 21 | $ 41 | $ 83 | $ 83 | |
| Securities on deposit with third parties | $ 400 | $ 400 | $ 490 | ||
| X | ||||||||||
- Definition Represents the fair value of investment securities sold or redeemed. No definition available.
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| X | ||||||||||
- Definition A savings certificate entitling the Entity (that is, bearer) to receive interest at an established maturity date, based upon a fixed interest rate. A certificate of deposit may be issued in any denomination. Certificates of deposit are generally issued by commercial banks and, therefore, insured by the FDIC (up to the prescribed limit). Certificates of deposit generally restrict holders from withdrawing funds on demand without the incurrence of penalties. Generally, only certificates of deposit with original maturities of three months or less qualify as cash equivalents. Original maturity means original maturity to the entity holding the investment. As a related example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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| X | ||||||||||
- References No definition available.
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