Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty.

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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.

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Percentage of decrease in weighted average contractual interest rate of financing receivable modified for debtor experiencing financial difficulty.

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Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Loans and Leases - Schedule of Modifications to Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Modified [Line Items]
Reduced Amortized Cost Basis	$ 55	$ 34	$ 262
Contractual Interest Rate Reduction \| Loans held for investment \| Multi-family
Financing Receivable, Modified [Line Items]
Weighted-Average Term (in years)
Contractual Interest Rate Reduction \| Loans held for investment \| Multi-family \| Minimum
Financing Receivable, Modified [Line Items]
Weighted-Average Contractual Interest Rate		8.08%	7.45%
Contractual Interest Rate Reduction \| Loans held for investment \| Multi-family \| Maximum
Financing Receivable, Modified [Line Items]
Weighted-Average Contractual Interest Rate		6.00%	6.02%
Contractual Interest Rate Reduction \| Loans held for investment \| Commercial real estate
Financing Receivable, Modified [Line Items]
Weighted-Average Term (in years)	4 months 24 days	3 months 18 days
Contractual Interest Rate Reduction \| Loans held for investment \| Commercial real estate \| Minimum
Financing Receivable, Modified [Line Items]
Weighted-Average Contractual Interest Rate	0.00%	8.13%	8.83%
Contractual Interest Rate Reduction \| Loans held for investment \| Commercial real estate \| Maximum
Financing Receivable, Modified [Line Items]
Weighted-Average Contractual Interest Rate	0.00%	6.95%	4.56%
Contractual Interest Rate Reduction \| Loans held for investment \| One-to-four family first mortgage
Financing Receivable, Modified [Line Items]
Weighted-Average Term (in years)	9 years 3 months 18 days	11 years 3 months 18 days
Contractual Interest Rate Reduction \| Loans held for investment \| One-to-four family first mortgage \| Minimum
Financing Receivable, Modified [Line Items]
Weighted-Average Contractual Interest Rate	7.02%	4.73%	6.08%
Contractual Interest Rate Reduction \| Loans held for investment \| One-to-four family first mortgage \| Maximum
Financing Receivable, Modified [Line Items]
Weighted-Average Contractual Interest Rate	6.09%	3.80%	4.79%
Contractual Interest Rate Reduction \| Loans held for investment \| Commercial and industrial
Financing Receivable, Modified [Line Items]
Weighted-Average Term (in years)	2 years 9 months 18 days	8 months 12 days	7 months 6 days
Contractual Interest Rate Reduction \| Loans held for investment \| Commercial and industrial \| Minimum
Financing Receivable, Modified [Line Items]
Weighted-Average Contractual Interest Rate	7.50%	7.73%	8.44%
Contractual Interest Rate Reduction \| Loans held for investment \| Commercial and industrial \| Maximum
Financing Receivable, Modified [Line Items]
Weighted-Average Contractual Interest Rate	7.25%	6.10%	8.08%
Contractual Interest Rate Reduction \| Loans held for investment \| Other Consumer
Financing Receivable, Modified [Line Items]
Weighted-Average Term (in years)	13 years	2 years 1 month 6 days
Contractual Interest Rate Reduction \| Loans held for investment \| Other Consumer \| Minimum
Financing Receivable, Modified [Line Items]
Weighted-Average Contractual Interest Rate	10.30%	10.69%	9.09%
Contractual Interest Rate Reduction \| Loans held for investment \| Other Consumer \| Maximum
Financing Receivable, Modified [Line Items]
Weighted-Average Contractual Interest Rate	5.97%	3.71%	4.82%
Principal Forgiveness \| Loans held for investment \| One-to-four family first mortgage
Financing Receivable, Modified [Line Items]
Reduced Amortized Cost Basis		$ 1