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v3.24.1.1.u2

Investment Securities - Investment Securities, Narrative (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 USD ($) security | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) security
Schedule of Investments [Line Items] |  |  |
Federal home loan bank stock | $ | $ 1,550,000,000 |  | $ 1,392,000,000
Federal reserve bank stock | $ | 203,000,000 |  | 203,000,000
Equity securities, gross unrealized loss | $ | 0 | $ 0 |
Corporate bonds |  |  |
Schedule of Investments [Line Items] |  |  |
Fair Value | $ | $ 340,000,000 |  | $ 343,000,000
Collateralized Debt Obligations |  |  |
Schedule of Investments [Line Items] |  |  |
Number of securities continuous unrealized loss position more than twelve months | 180 |  | 84
Capital trust notes |  |  |
Schedule of Investments [Line Items] |  |  |
Number of securities continuous unrealized loss position more than twelve months | 6 |  | 6
Asset-backed securities |  |  |
Schedule of Investments [Line Items] |  |  |
Number of securities continuous unrealized loss position more than twelve months | 7 |  | 8
Corporate bonds |  |  |
Schedule of Investments [Line Items] |  |  |
Number of securities continuous unrealized loss position more than twelve months | 12 |  | 12
Provision for credit loss | $ | $ 1,000,000 |  |
US Government Agencies Debt Securities |  |  |
Schedule of Investments [Line Items] |  |  |
Number of securities continuous unrealized loss position more than twelve months | 39 |  | 37
Mortgage-Related Debt Securities: |  |  |
Schedule of Investments [Line Items] |  |  |
Number of securities continuous unrealized loss position more than twelve months | 326 |  | 302
Mutual funds and common stock |  |  |
Schedule of Investments [Line Items] |  |  |
Number of securities continuous unrealized loss position more than twelve months |  |  | 1
Municipal bonds |  |  |
Schedule of Investments [Line Items] |  |  |
Number of securities continuous unrealized loss position more than twelve months | 1 |  | 1
Foreign notes |  |  |
Schedule of Investments [Line Items] |  |  |
Number of securities continuous unrealized loss position more than twelve months | 1 |  | 1
Private Collateralized Mortgage Obligations |  |  |
Schedule of Investments [Line Items] |  |  |
Number of securities continuous unrealized loss position more than twelve months | 1 |  |
Federal Home Loan Bank of New York |  |  |
Schedule of Investments [Line Items] |  |  |
Federal home loan bank stock | $ | $ 1,000,000,000 |  | $ 861,000,000
Federal Home Loan Bank of Indianapolis |  |  |
Schedule of Investments [Line Items] |  |  |
Federal home loan bank stock | $ | $ 329,000,000 |  | $ 329,000,000

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- Definition Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 325 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481026/942-325-45-1 + Details
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