Trading Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	$ 5,441,038	$ 5,193,505
Trading Securities, Net Unrealized Gain (Loss)	8,362	98,635
U.S. government securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	426,825	10,959
Trading Securities, Net Unrealized Gain (Loss)	(194)	28
Residential agency mortgage-backed securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	4,898,485	5,105,137
Trading Securities, Net Unrealized Gain (Loss)	8,571	98,124
Municipal securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	67,120	37,413
Trading Securities, Net Unrealized Gain (Loss)	(142)	323
Other trading securities [Member]
Schedule of Trading Securities [Line Items]
Trading Securities, Fair Value	48,608	39,996
Trading Securities, Net Unrealized Gain (Loss)	$ 127	$ 160