Name:	cim_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward
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Principal accretion (amortization) recognized during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

No definition available.

Name:	cim_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAccretionAmortization
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Collections made during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

No definition available.

Name:	cim_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetCollections
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Principal accretion (amortization) recognized during the period in relation to net asset (liability) financial instruments measured at fair value and categorized within Level 3 of the fair value hierarchy.

No definition available.

Name:	cim_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityNetAccretionAmortization
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Collections made during the period in relation to net asset (liability) financial instruments measured at fair value and categorized within Level 3 of the fair value hierarchy.

No definition available.

Name:	cim_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityNetCollections
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of purchases of net asset (liability) financial instruments measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

No definition available.

Name:	cim_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityNetPurchases
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of sales and settlements of net asset (liability) financial instruments measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

No definition available.

Name:	cim_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityNetSalesAndSettlements
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of transfers due to consolidation (deconsolidation) of net asset (liability) financial instruments out of level 3 of the fair value hierarchy.

No definition available.

Name:	cim_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetLiabilityNetTransfersDueToConsolidationDeconsolidation
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of transfers due to consolidation (deconsolidation) of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

No definition available.

Name:	cim_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersDueToConsolidationDeconsolidation
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Principal accretion (amortization) recognized during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy.

No definition available.

Name:	cim_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAccretionAmortization
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Collections made during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy.

No definition available.

Name:	cim_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityCollections
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Fair value of net asset (liability) financial instruments measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityNetValue
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

This element represents net realized gains or losses for the period arising from sales of net asset (liability) financial instruments measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings.

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetLiabilityNetRealizedGainLossonSaleIncludedinNetIncome
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

This element represents net unrealized gains or losses for the period for net asset (liability) financial instruments measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings.

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetLiabilityNetUnrealizedGainsLossesIncludedInEarnings
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Other Than Temporary Impairments

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetLiabilityOtherThanTemporaryImpairments
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Unrealized Gain (Loss)

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetLiabilityUnrealizedGainLoss
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Other than temporary impairments recognized during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetOtherThanTemporaryImpairments
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Realized Gain (Loss) on Sales and Settlements Included in Earnings

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetRealizedGainLossonSalesandSettlementsIncludedinEarnings
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales and Settlements

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetSalesandSettlements
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Unrealized Gain (Loss) Included in Earnings

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetUnrealizedGainLossIncludedinEarnings
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Realized Gain (Loss) on Sales and Settlements Included in Earnings

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisLiabilityRealizedGainLossonSalesandSettlementsIncludedinEarnings
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales and Settlements

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisLiabilitySalesandSettlements
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of transfers due to consolidation (deconsolidation) of financial instrument classified as a liability out of level 3 of the fair value hierarchy.

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisLiabilityTransfersdueToConsolidationDeconsolidation
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Unrealized Gain (Loss) Included in Earnings

No definition available.

Name:	cim_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisLiabilityUnrealizedGainLossIncludedinEarnings
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of realized gains (losses) recognized in the income statement arising from sales and settlements of financial instruments classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

No definition available.

Name:	cim_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationRealizedGainLossOnSaleIncludedInNetIncome
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of net unrealized gain (loss) recognized in the income statement of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

No definition available.

Name:	cim_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationUnrealizedGainsLossesIncludedInEarnings
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.

No definition available.

Name:	us-gaap_AssetsFairValueAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

Name:	us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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.

No definition available.

Name:	us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

Name:	us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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

Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

Name:	us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationRollForward
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Data Type:	xbrli:stringItemType
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Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258

Name:	us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchasesSalesIssuesSettlements
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Data Type:	xbrli:monetaryItemType
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Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258

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

Total carrying amount of mortgage loans as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.6)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Name:	us-gaap_MortgageLoansOnRealEstate
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of decrease in mortgage loans on real estate from amortization of premium.

Name:	us-gaap_MortgageLoansOnRealEstateAmortizationOfPremium
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The amount of principal collected on mortgage loans on real estate during the reporting period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.6)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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Data Type:	xbrli:monetaryItemType
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Total amount of additions to mortgage loans other than new loans during the reporting period.

Name:	us-gaap_MortgageLoansOnRealEstateOtherAdditions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Name:	us-gaap_DebtInstrumentAxis=cim_SecuritizedDebtLoansHeldForInvestmentAtFairValueMember
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Data Type:	na
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Name:	us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryAggregatedDisclosureMember
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Data Type:	na
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Name:	us-gaap_InvestmentTypeAxis=cim_NonAgencyResidentialMortgageBackedSecuritiesMember
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