Investments in Securities - Investments In Trading Securities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Schedule of Investments in Trading Securities [Line Items]
Trading, at fair value	$ 50,129	$ 88,206
Mortgage-related securities
Schedule of Investments in Trading Securities [Line Items]
Trading, at fair value	3,211	4,606
Mortgage-related securities \| Consolidated Trusts
Schedule of Investments in Trading Securities [Line Items]
Trading, at fair value	427	593
Non-mortgage-related securities
Schedule of Investments in Trading Securities [Line Items]
Trading, at fair value	46,918	83,600
Non-mortgage-related securities \| Pledged as collateral
Schedule of Investments in Trading Securities [Line Items]
Trading, at fair value	$ 3,900	$ 4,200

Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
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-URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant