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Capital and Mandatorily Redeemable Capital Stock (MRCS) (Tables)
6 Months Ended
Jun. 30, 2024
Federal Home Loan Banks [Abstract]  
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]
Minimum Capital Requirements

For details on our minimum capital requirements, including how the ratios below were calculated, see Minimum Capital Requirements in Note 12 – Capital and Mandatorily Redeemable Capital Stock (MRCS) to the financial statements in our 2023 Form 10-K. We complied with our minimum regulatory capital requirements as shown below.

As ofJune 30, 2024December 31, 2023
RequirementActualRequirementActual
Total regulatory capital$4,913 $8,462 $4,735 $8,339 
Total regulatory capital ratio4.00 %6.89 %4.00 %7.04 %
Leverage capital$6,141 $12,693 $5,919 $12,508 
Leverage capital ratio5.00 %10.33 %5.00 %10.57 %
Risk-based capital $2,081 $8,462 $2,199 $8,339 

Total regulatory capital and leverage capital includes MRCS but does not include AOCI. Under the FHFA regulation on capital classifications and critical capital levels for the FHLBs, we are adequately capitalized.

Additionally, an FHFA Advisory Bulletin sets forth guidance for each FHLB to maintain a ratio of at least two percent of capital stock to total assets. In accordance with this guidance, the FHFA considers the proportion of capital stock to assets, measured on a daily average basis at month end, when assessing each FHLB’s capital management practices.
Stockholders' Equity, Total [Member]  
Concentration Risk [Line Items]  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Capital Concentration

The following member(s) (including any successor) had regulatory capital stock exceeding 10% of our total regulatory capital stock outstanding (which includes MRCS) as of June 30, 2024.

As of June 30, 2024Regulatory Capital Stock Outstanding% of Total OutstandingAmount of Which is Classified as a Liability (MRCS)
The Northern Trust Company$343 10.4 %$