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Loans and Leases - Loan Modifications (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost | $ 5 | $ 19 | $ 29 | $ 65
Loans and Leases Held for Investment: | Multi-family |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  |  | $ 2 |
Percent of Total Loan class |  |  | 0.01% |
Loans and Leases Held for Investment: | Commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  | $ 8 | $ 12 | $ 52
Percent of Total Loan class |  | 0.08% | 0.12% | 0.49%
Loans and Leases Held for Investment: | One-to-four family first mortgage |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost | $ 5 | $ 4 | $ 7 | $ 6
Percent of Total Loan class | 0.09% | 0.07% | 0.12% | 0.10%
Other loans held for investment | Commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  | $ 7 | $ 8 | $ 7
Percent of Total Loan class |  | 0.03% | 0.04% | 0.03%
Interest Rate Reduction |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost | $ 0 | $ 8 | $ 10 | $ 52
Interest Rate Reduction | Loans and Leases Held for Investment: | Multi-family |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  |  | $ 2 |
Interest Rate Reduction | Loans and Leases Held for Investment: | Multi-family | Minimum |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average contractual interest rate |  |  | 8.08% |
Interest Rate Reduction | Loans and Leases Held for Investment: | Multi-family | Maximum |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average contractual interest rate |  |  | 6.00% |
Interest Rate Reduction | Loans and Leases Held for Investment: | Commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  | $ 8 | $ 8 | $ 52
Interest Rate Reduction | Loans and Leases Held for Investment: | Commercial real estate | Minimum |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average contractual interest rate |  | 8.00% | 8.13% | 10.09%
Interest Rate Reduction | Loans and Leases Held for Investment: | Commercial real estate | Maximum |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average contractual interest rate |  | 4.00% | 7.00% | 4.00%
Interest Rate Reduction | Loans and Leases Held for Investment: | One-to-four family first mortgage |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost | $ 0 | $ 0 | $ 0 | $ 0
Weighted-average Term (in years) | 10 years 6 months 21 days | 13 years 7 months 6 days | 12 years 2 months 12 days | 13 years
Interest Rate Reduction | Loans and Leases Held for Investment: | One-to-four family first mortgage | Minimum |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average contractual interest rate | 4.76% | 6.05% | 4.69% | 5.47%
Interest Rate Reduction | Loans and Leases Held for Investment: | One-to-four family first mortgage | Maximum |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average contractual interest rate | 3.65% | 4.80% | 3.70% | 4.40%
Interest Rate Reduction | Loans and Leases Held for Investment: | Commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average Term (in years) | 1 year | 9 months 3 days | 4 months 24 days | 9 months 3 days
Interest Rate Reduction | Loans and Leases Held for Investment: | Commercial and industrial | Minimum |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average contractual interest rate | 8.51% | 0.00% | 7.44% | 0.00%
Interest Rate Reduction | Loans and Leases Held for Investment: | Commercial and industrial | Maximum |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average contractual interest rate | 6.00% | 0.00% | 6.30% | 0.00%
Interest Rate Reduction | Loans and Leases Held for Investment: | Other Consumer |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average Term (in years) |  |  | 1 year 9 months 18 days |
Interest Rate Reduction | Loans and Leases Held for Investment: | Other Consumer | Minimum |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average contractual interest rate |  |  | 10.72% |
Interest Rate Reduction | Loans and Leases Held for Investment: | Other Consumer | Maximum |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Weighted-average contractual interest rate |  |  | 4.30% |
Interest Rate Reduction | Other loans held for investment | Commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  | $ 0 | $ 0 | $ 0
Term Extension |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost | $ 4 | 9 | 16 | 10
Term Extension | Loans and Leases Held for Investment: | Multi-family |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  |  | 0 |
Term Extension | Loans and Leases Held for Investment: | Commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  | 0 | 4 | 0
Term Extension | Loans and Leases Held for Investment: | One-to-four family first mortgage |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost | 4 | 2 | 5 | 3
Term Extension | Other loans held for investment | Commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  | 7 | 7 | 7
Combination - Interest Rate Reduction & Term Extension |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost | 1 | 2 | 3 | 3
Combination - Interest Rate Reduction & Term Extension | Loans and Leases Held for Investment: | Multi-family |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  |  | 0 |
Combination - Interest Rate Reduction & Term Extension | Loans and Leases Held for Investment: | Commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  | 0 | 0 | 0
Combination - Interest Rate Reduction & Term Extension | Loans and Leases Held for Investment: | One-to-four family first mortgage |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost | $ 1 | 2 | 2 | 3
Combination - Interest Rate Reduction & Term Extension | Other loans held for investment | Commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Amortized Cost |  | $ 0 | $ 1 | $ 0

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