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Background Information	6 Months Ended
Background Information	Jun. 30, 2011
Background Information [Abstract]
Nature of Operations [Text Block]	Background Information The Federal Home Loan Bank of Cincinnati (the FHLBank), a federally chartered corporation, is one of 12 District Federal Home Loan Banks (FHLBanks). The FHLBanks serve the public by enhancing the availability of credit for residential mortgages and targeted community development. The FHLBank is regulated by the Federal Housing Finance Agency (Finance Agency).