Related Party Disclosures and Other Transactions - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Related Party Transactions [Abstract]
Loans from other FHLBanks	$ 700,000	$ 0
Loans to other FHLBanks	$ 0	$ 0

Amount of Federal Home Loan Bank (FHLBank) loans from another FHLBank.

No definition available.

Name:	us-gaap_LoansFromOtherFederalHomeLoanBanks
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant