XML 85 R63.htm IDEA: XBRL DOCUMENT
v3.24.3

GUARANTEES AND COMMITMENTS - Credit Quality Indicators (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Total |  |  |  |  |
Total | $ 10,668,844 |  | $ 10,668,844 |  | $ 9,623,119
Agricultural Finance |  |  |  |  |
Total |  |  |  |  |
Current period charge-offs | 0 | $ 0 | 4,043 | $ 0 |
Rural Infrastructure Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 935,251 |  | 935,251 |  | 618,946
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Two |  |  |  |  |
Total | 547,129 |  | 547,129 |  | 720,522
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Three |  |  |  |  |
Total | 641,415 |  | 641,415 |  | 187,746
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Four |  |  |  |  |
Total | 176,273 |  | 176,273 |  | 593,841
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Five |  |  |  |  |
Total | 565,944 |  | 565,944 |  | 701,937
Current period charge-offs | 0 | 0 | 0 | 0 |
Prior |  |  |  |  |
Total | 1,242,792 |  | 1,242,792 |  | 611,548
Current period charge-offs | 0 | 0 | 0 | 0 |
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 274,551 |  | 274,551 |  | 100,223
Current period charge-offs | 0 | 0 | 0 | 0 |
Total |  |  |  |  |
Total | 4,383,355 |  | 4,383,355 |  | 3,534,763
Current period charge-offs | 0 | 0 | 0 | 0 |
Acceptable | Rural Infrastructure Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 932,310 |  | 932,310 |  | 618,946
Year Two |  |  |  |  |
Total | 536,679 |  | 536,679 |  | 681,272
Year Three |  |  |  |  |
Total | 582,812 |  | 582,812 |  | 187,746
Year Four |  |  |  |  |
Total | 176,273 |  | 176,273 |  | 593,841
Year Five |  |  |  |  |
Total | 565,944 |  | 565,944 |  | 701,937
Prior |  |  |  |  |
Total | 1,242,792 |  | 1,242,792 |  | 611,548
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 274,551 |  | 274,551 |  | 100,223
Total |  |  |  |  |
Total | 4,311,361 |  | 4,311,361 |  | 3,495,513
Special mention | Rural Infrastructure Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 2,941 |  | 2,941 |  | 0
Year Two |  |  |  |  |
Total | 10,450 |  | 10,450 |  | 9,850
Year Three |  |  |  |  |
Total | 34,475 |  | 34,475 |  | 0
Year Four |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Five |  |  |  |  |
Total | 0 |  | 0 |  | 0
Prior |  |  |  |  |
Total | 0 |  | 0 |  | 0
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 0 |  | 0 |  | 0
Total |  |  |  |  |
Total | 47,866 |  | 47,866 |  | 9,850
Substandard | Rural Infrastructure Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Two |  |  |  |  |
Total | 0 |  | 0 |  | 29,400
Year Three |  |  |  |  |
Total | 24,128 |  | 24,128 |  | 0
Year Four |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Five |  |  |  |  |
Total | 0 |  | 0 |  | 0
Prior |  |  |  |  |
Total | 0 |  | 0 |  | 0
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 0 |  | 0 |  | 0
Total |  |  |  |  |
Total | 24,128 |  | 24,128 |  | 29,400
Long-Term Standby Purchase Commitments and Guaranteed Securities |  |  |  |  |
Total |  |  |  |  |
Total | 3,808,570 |  | 3,808,570 |  | 3,932,857
Long-Term Standby Purchase Commitments and Guaranteed Securities | Agricultural Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 12,104 |  | 12,104 |  | 169,429
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Two |  |  |  |  |
Total | 132,985 |  | 132,985 |  | 246,512
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Three |  |  |  |  |
Total | 234,087 |  | 234,087 |  | 517,862
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Four |  |  |  |  |
Total | 494,402 |  | 494,402 |  | 535,398
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Five |  |  |  |  |
Total | 529,317 |  | 529,317 |  | 266,882
Current period charge-offs | 0 | 0 | 0 | 0 |
Prior |  |  |  |  |
Total | 1,369,941 |  | 1,369,941 |  | 1,256,770
Current period charge-offs | 0 | 0 | 0 | 0 |
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 424,571 |  | 424,571 |  | 404,991
Current period charge-offs | 0 | 0 | 0 | 0 |
Total |  |  |  |  |
Total | 3,197,407 |  | 3,197,407 |  | 3,397,844
Current period charge-offs | 0 | 0 | 0 | 0 |
Long-Term Standby Purchase Commitments and Guaranteed Securities | Rural Infrastructure Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 0 |  | 0 |  | 0
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Two |  |  |  |  |
Total | 0 |  | 0 |  | 0
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Three |  |  |  |  |
Total | 0 |  | 0 |  | 0
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Four |  |  |  |  |
Total | 0 |  | 0 |  | 0
Current period charge-offs | 0 | 0 | 0 | 0 |
Year Five |  |  |  |  |
Total | 0 |  | 0 |  | 0
Current period charge-offs | 0 | 0 | 0 | 0 |
Prior |  |  |  |  |
Total | 363,689 |  | 363,689 |  | 419,190
Current period charge-offs | 0 | 0 | 0 | 0 |
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 247,474 |  | 247,474 |  | 115,823
Current period charge-offs | 0 | 0 | 0 | 0 |
Total |  |  |  |  |
Total | 611,163 |  | 611,163 |  | 535,013
Current period charge-offs | 0 | $ 0 | 0 | $ 0 |
Long-Term Standby Purchase Commitments and Guaranteed Securities | Acceptable | Agricultural Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 12,104 |  | 12,104 |  | 169,429
Year Two |  |  |  |  |
Total | 127,022 |  | 127,022 |  | 246,441
Year Three |  |  |  |  |
Total | 219,900 |  | 219,900 |  | 515,396
Year Four |  |  |  |  |
Total | 478,659 |  | 478,659 |  | 534,395
Year Five |  |  |  |  |
Total | 516,045 |  | 516,045 |  | 264,815
Prior |  |  |  |  |
Total | 1,297,238 |  | 1,297,238 |  | 1,185,811
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 411,223 |  | 411,223 |  | 391,335
Total |  |  |  |  |
Total | 3,062,191 |  | 3,062,191 |  | 3,307,622
Long-Term Standby Purchase Commitments and Guaranteed Securities | Acceptable | Rural Infrastructure Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Two |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Three |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Four |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Five |  |  |  |  |
Total | 0 |  | 0 |  | 0
Prior |  |  |  |  |
Total | 363,689 |  | 363,689 |  | 419,190
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 247,474 |  | 247,474 |  | 115,823
Total |  |  |  |  |
Total | 611,163 |  | 611,163 |  | 535,013
Long-Term Standby Purchase Commitments and Guaranteed Securities | Special mention | Agricultural Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Two |  |  |  |  |
Total | 5,963 |  | 5,963 |  | 71
Year Three |  |  |  |  |
Total | 12,941 |  | 12,941 |  | 2,466
Year Four |  |  |  |  |
Total | 14,561 |  | 14,561 |  | 872
Year Five |  |  |  |  |
Total | 6,926 |  | 6,926 |  | 531
Prior |  |  |  |  |
Total | 46,864 |  | 46,864 |  | 44,631
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 12,134 |  | 12,134 |  | 8,565
Total |  |  |  |  |
Total | 99,389 |  | 99,389 |  | 57,136
Long-Term Standby Purchase Commitments and Guaranteed Securities | Special mention | Rural Infrastructure Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Two |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Three |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Four |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Five |  |  |  |  |
Total | 0 |  | 0 |  | 0
Prior |  |  |  |  |
Total | 0 |  | 0 |  | 0
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 0 |  | 0 |  | 0
Total |  |  |  |  |
Total | 0 |  | 0 |  | 0
Long-Term Standby Purchase Commitments and Guaranteed Securities | Substandard | Agricultural Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Two |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Three |  |  |  |  |
Total | 1,246 |  | 1,246 |  | 0
Year Four |  |  |  |  |
Total | 1,182 |  | 1,182 |  | 131
Year Five |  |  |  |  |
Total | 6,346 |  | 6,346 |  | 1,536
Prior |  |  |  |  |
Total | 25,839 |  | 25,839 |  | 26,328
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 1,214 |  | 1,214 |  | 5,091
Total |  |  |  |  |
Total | 35,827 |  | 35,827 |  | 33,086
Long-Term Standby Purchase Commitments and Guaranteed Securities | Substandard | Rural Infrastructure Finance |  |  |  |  |
Year One |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Two |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Three |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Four |  |  |  |  |
Total | 0 |  | 0 |  | 0
Year Five |  |  |  |  |
Total | 0 |  | 0 |  | 0
Prior |  |  |  |  |
Total | 0 |  | 0 |  | 0
Revolving Loans - Amortized Cost Basis |  |  |  |  |
Total | 0 |  | 0 |  | 0
Total |  |  |  |  |
Total | $ 0 |  | $ 0 |  | $ 0

X
- Definition Financing Receivable, Originated Five or More Years before Latest Fiscal Year + References No definition available. + Details
Name: | agm_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYearAbstract
Namespace Prefix: | agm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Originated Four Years before Latest Fiscal Year + References No definition available. + Details
Name: | agm_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYearAbstract
Namespace Prefix: | agm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Originated in Current Fiscal Year + References No definition available. + Details
Name: | agm_FinancingReceivableOriginatedInCurrentFiscalYearAbstract
Namespace Prefix: | agm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year + References No definition available. + Details
Name: | agm_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYearAbstract
Namespace Prefix: | agm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Originated Three Years before Latest Fiscal Year + References No definition available. + Details
Name: | agm_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYearAbstract
Namespace Prefix: | agm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Originated Two Years before Latest Fiscal Year + References No definition available. + Details
Name: | agm_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYearAbstract
Namespace Prefix: | agm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Revolving + References No definition available. + Details
Name: | agm_FinancingReceivableRevolvingAbstract
Namespace Prefix: | agm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FinancingReceivableBeforeAllowanceForCreditLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated four years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated three years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated two years before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=agm_AgriculturalFinanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=agm_RuralInfrastructureFinanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_GuaranteeObligationsByNatureAxis=agm_LongTermStandbyPurchaseCommitmentsAndGuaranteedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |