Transactions With Other FHLBanks (Details2) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Mar. 31, 2023	Jun. 30, 2024
Federal Home Loan Banks [Abstract]
Bonds Transferred to Other Federal Home Loan Banks, PAR	$ 0	$ 1,000,000	$ 0

Par amount of transfers and assumptions of primary liability of consolidated obligations to another Federal Home Loan Bank (FHLBank).

No definition available.

Name:	fhlbt_BondsTransferredToOtherFederalHomeLoanBanksPAR
Namespace Prefix:	fhlbt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration