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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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 860
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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Percentage, excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables.

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Loans and Leases - Schedule of Collateral-Dependent Loans Held for Investment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	$ 401	$ 19	$ 556	$ 19
Interest Rate Reduction
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	244	0	328	0
Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	100	13	169	13
Combination - Interest Rate Reduction & Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	57	6	59	6
Loans and leases held for investment: \| Multi-family
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	$ 259		$ 364
Percent of Total Loan class	0.96%		1.35%
Loans and leases held for investment: \| Multi-family \| Interest Rate Reduction
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	$ 134		$ 199
Loans and leases held for investment: \| Multi-family \| Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	85		125
Loans and leases held for investment: \| Multi-family \| Combination - Interest Rate Reduction & Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	40		40
Loans and leases held for investment: \| Commercial real estate
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	$ 123	$ 6	$ 159	$ 6
Percent of Total Loan class	1.49%	0.05%	1.93%	0.05%
Loans and leases held for investment: \| Commercial real estate \| Interest Rate Reduction
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	$ 110		$ 128	$ 0
Loans and leases held for investment: \| Commercial real estate \| Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	4		22	6
Loans and leases held for investment: \| Commercial real estate \| Combination - Interest Rate Reduction & Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	9		9	0
Loans and leases held for investment: \| One-to-four family first mortgage
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	$ 18	$ 13	$ 31	$ 13
Percent of Total Loan class	0.31%	0.23%	0.55%	0.25%
Loans and leases held for investment: \| One-to-four family first mortgage \| Interest Rate Reduction
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	$ 0		$ 0	$ 0
Loans and leases held for investment: \| One-to-four family first mortgage \| Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	11		22	7
Loans and leases held for investment: \| One-to-four family first mortgage \| Combination - Interest Rate Reduction & Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	7		9	6
Loans and leases held for investment: \| Other consumer
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	$ 1
Percent of Total Loan class	0.06%
Loans and leases held for investment: \| Other consumer \| Interest Rate Reduction
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	$ 0
Loans and leases held for investment: \| Other consumer \| Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	0
Loans and leases held for investment: \| Other consumer \| Combination - Interest Rate Reduction & Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total	1
Commercial and industrial \| Other consumer
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total		$ 0	$ 2	$ 0
Percent of Total Loan class		0.02%	0.11%	0.02%
Commercial and industrial \| Other consumer \| Interest Rate Reduction
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total		$ 0	$ 1
Commercial and industrial \| Other consumer \| Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total		0	0
Commercial and industrial \| Other consumer \| Combination - Interest Rate Reduction & Term Extension
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total		$ 0	1
Real Property Collateral \| Asset Pledged as Collateral
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total collateral-dependent loans held for investment	2,555		2,555
Real Property Collateral \| Loans and leases held for investment: \| Multi-family \| Asset Pledged as Collateral
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total collateral-dependent loans held for investment	2,130		2,130
Real Property Collateral \| Loans and leases held for investment: \| Commercial real estate \| Asset Pledged as Collateral
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total collateral-dependent loans held for investment	346		346
Real Property Collateral \| Loans and leases held for investment: \| One-to-four family first mortgage \| Asset Pledged as Collateral
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total collateral-dependent loans held for investment	54		54
Real Property Collateral \| Commercial and industrial \| Commercial and Industrial \| Asset Pledged as Collateral
Financial Instruments Owned and Pledged as Collateral [Line Items]
Total collateral-dependent loans held for investment	$ 25		$ 25