Trading Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Schedule of Trading Securities [Line Items]
Trading securities	$ 2,859,444	$ 9,136,813
Trading Securities, Net Unrealized Gain (Loss)	(20,467)	(9,290)
U.S. government securities [Member]
Schedule of Trading Securities [Line Items]
Trading securities	8,357	23,610
Trading Securities, Net Unrealized Gain (Loss)	0	40
Residential agency mortgage-backed securities [Member]
Schedule of Trading Securities [Line Items]
Trading securities	2,807,950	9,068,900
Trading Securities, Net Unrealized Gain (Loss)	(20,447)	(9,338)
Municipal securities [Member]
Schedule of Trading Securities [Line Items]
Trading securities	18,825	25,783
Trading Securities, Net Unrealized Gain (Loss)	(11)	34
Other trading securities [Member]
Schedule of Trading Securities [Line Items]
Trading securities	24,312	18,520
Trading Securities, Net Unrealized Gain (Loss)	$ (9)	$ (26)