Name:	fmcc_CashAndOtherNonMortgageInvestments
Namespace Prefix:	fmcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of credit protection available from mortgage insurers based on Unpaid Principal Balance for our Single-family Mortgage Portfolio. The amount is based on gross coverage without regard to netting of coverage that may exist to the extent an affected mortgage is covered under both primary and pool insurance.

No definition available.

Name:	fmcc_CreditProtectionCoverageFromMortgageInsurersForSingleFamilyMortgagePortfolio
Namespace Prefix:	fmcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the UPB of loans related to losses that were recovered in repurchase requests to Single-family seller/servicer during the reporting period.

No definition available.

Name:	fmcc_UPBOfLoansRelatedToRecoveredLossesFromRepurchaseRequestsToSingleFamilySellerServicers
Namespace Prefix:	fmcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Unpaid Principal Balance of the Single-family Mortgage Portfolio with mortgage insurance coverage. The amount is based on gross coverage without regard to netting of coverage that may exist to the extent an affected mortgage is covered under both primary and pool insurance.

No definition available.

Name:	fmcc_UnpaidPrincipalBalanceOfSingleFamilyMortgagePortfolioWithMortgageInsuranceCoverage
Namespace Prefix:	fmcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

UPB related to Repurchase Requests issued to Single-familly seller/servicers.

No definition available.

Name:	fmcc_UnpaidPrincipalBalanceRepurchaseRequestsIssuedToSingleFamilySellerServicers
Namespace Prefix:	fmcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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For an entity that discloses a concentration risk as a percentage of some financial balance or benchmark, this item identifies a second characteristic of the concentration. For example, "Europe" is the second characteristic in the phrase: "net assets in Europe are 70 percent of total net assets".

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
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