Investments in Securities - Trading 1 (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Schedule of Investments in Trading Securities [Line Items]
Trading, at fair value	$ 50,585	$ 50,129
Mortgage-related
Schedule of Investments in Trading Securities [Line Items]
Trading, at fair value	2,358	3,211
Non-mortgage-related securities
Schedule of Investments in Trading Securities [Line Items]
Trading, at fair value	48,227	46,918
Non-mortgage-related securities | Pledged as collateral
Schedule of Investments in Trading Securities [Line Items]
Trading, at fair value	4,900	3,900
Consolidated trusts | Mortgage-related
Schedule of Investments in Trading Securities [Line Items]
Trading, at fair value	$ 391	$ 427