Capital Stock Value Including Mandatorily Redeemable Stock

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- Definition

Capital Stock Value Including Mandatorily Redeemable Stock Percent

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Concentration Risk, Threshold Percentage

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- Definition

Fees related to standby letters of credit

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The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of Federal Home Loan Bank (FHLBank) advances to member financial institutions.

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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Amount of interest income from Federal Home Loan Bank (FHLBank) advances to member financial institutions.

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No definition available.

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- Definition

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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Activities with Stockholders (Business Concentrations) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Related Party Transaction [Line Items]
Advances	$ 124,489		$ 124,489		$ 110,230
Advances	1,405	$ 1,284	2,696	$ 2,470
Residential Portfolio Segment
Related Party Transaction [Line Items]
Financing Receivable, Allowance for Credit Loss, Noncurrent	15,524		15,524		14,546
Standby Letters of Credit [Member]
Related Party Transaction [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	20,963		20,963		18,263
Athene Annuity and Life Company
Related Party Transaction [Line Items]
Capital Stock Value Including Mandatorily Redeemable Stock	$ 1,256		$ 1,256		$ 1,057
Capital Stock Value Including Mandatorily Redeemable Stock Percent	17.00%		17.00%		16.00%
Financing Receivable, Allowance for Credit Loss, Noncurrent					$ 0
Advances	$ 27,695		$ 27,695		23,271
Advances			545		863
Athene Annuity and Life Company \| Residential Portfolio Segment
Related Party Transaction [Line Items]
Financing Receivable, Allowance for Credit Loss, Noncurrent	0		0
Superior Guaranty Insurance Company
Related Party Transaction [Line Items]
Capital Stock Value Including Mandatorily Redeemable Stock	$ 3		$ 3		$ 4
Capital Stock Value Including Mandatorily Redeemable Stock Percent	0.00%		0.00%		0.00%
Financing Receivable, Allowance for Credit Loss, Noncurrent					$ 93
Advances	$ 0		$ 0		0
Advances			0		0
Superior Guaranty Insurance Company \| Residential Portfolio Segment
Related Party Transaction [Line Items]
Financing Receivable, Allowance for Credit Loss, Noncurrent	83		83
Wells Fargo Bank N.A.
Related Party Transaction [Line Items]
Capital Stock Value Including Mandatorily Redeemable Stock	$ 1,014		$ 1,014		$ 741
Capital Stock Value Including Mandatorily Redeemable Stock Percent	14.00%		14.00%		11.00%
Advances	$ 22,000		$ 22,000		$ 16,000
Advances			562		348
Standbyletters of Credit Fees			7		13
Wells Fargo Bank N.A. \| Residential Portfolio Segment
Related Party Transaction [Line Items]
Financing Receivable, Allowance for Credit Loss, Noncurrent	5		5		5
Wells Fargo Bank N.A. \| Standby Letters of Credit [Member]
Related Party Transaction [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	13,900		13,900		10,900
Principal Owner [Member]
Related Party Transaction [Line Items]
Capital Stock Value Including Mandatorily Redeemable Stock	$ 2,273		$ 2,273		$ 1,802
Capital Stock Value Including Mandatorily Redeemable Stock Percent	31.00%		31.00%		27.00%
Financing Receivable, Allowance for Credit Loss, Noncurrent					$ 98
Advances	$ 49,695		$ 49,695		39,271
Advances			1,107		$ 1,211
Principal Owner [Member] \| Residential Portfolio Segment
Related Party Transaction [Line Items]
Financing Receivable, Allowance for Credit Loss, Noncurrent	$ 88		$ 88
Stockholders' Equity, Total [Member] \| Stockholders' Capital Stock Outstanding Concenetration Risk [Member] \| Minimum [Member]
Related Party Transaction [Line Items]
Concentration Risk, Threshold Percentage			10.00%