Name:	ck0001715933_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAmortizationOfPremiumAndAccretionOfDiscountNet
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Fair value measurement with unobservable inputs reconciliation recurring basis asset purchases including payments received in kind and reorganizations.

No definition available.

Name:	ck0001715933_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesIncludingPaymentsReceivedInKindAndReorganizations
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Fair value measurement with unobservable inputs reconciliation recurring basis asset sales and paydowns of investments and reorganizations.

No definition available.

Name:	ck0001715933_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSalesAndPaydownsOfInvestmentsAndReorganizations
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Investment valuations and fair value measurements.

No definition available.

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Net change in unrealized appreciation depreciation.

No definition available.

Name:	ck0001715933_NetChangeInUnrealizedAppreciationDepreciation
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Data Type:	xbrli:monetaryItemType
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Net change in unrealized appreciation depreciation in investments held.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 102
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-102

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 101
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-101

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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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 101
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-101

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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Period Type:	instant

Indicates line item in statement of income or comprehensive income that includes gain (loss) from asset measured at fair value using unobservable input (level 3).