INCOME TAXES - Portfolio for Tax Purpose (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
INCOME TAXES
Aggregate cost of portfolio company securities	$ 902,143,550	$ 875,823,177
Gross unrealized appreciation of portfolio company securities	38,379,839	28,927,746
Gross unrealized depreciation of portfolio company securities	(65,262,547)	(58,602,607)
Gross unrealized appreciation on foreign currency translations of portfolio company securities	11,142
Gross unrealized depreciation on foreign currency translations of portfolio company securities	(811,301)	(1,414,678)
Aggregate fair value of portfolio company securities	$ 874,460,683	$ 844,733,638

Amount of fair value of investment for federal income tax purpose.

No definition available.

Name:	scm_TaxBasisOfInvestmentsFairValue
Namespace Prefix:	scm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of cumulative income in foreign currency translation on investment from unrealized gain when value exceeds cost for federal income tax purpose.

+ References

No definition available.

+ Details

Name:	scm_TaxBasisOfInvestmentsGrossUnrealizedAppreciationOnForeignCurrencyTranslation
Namespace Prefix:	scm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cumulative decrease in foreign currency translation on investment from unrealized gain when value exceeds cost for federal income tax purpose.

+ References

No definition available.

+ Details

Name:	scm_TaxBasisOfInvestmentsGrossUnrealizedDepreciationOnForeignCurrencyTranslation
Namespace Prefix:	scm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

Amount of cost of investment for federal income tax purpose.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(h)(2)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3

+ Details

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

- Definition

Amount of cumulative increase in investment from unrealized gain when value exceeds cost for federal income tax purpose.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(h)(2)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3

+ Details

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

- Definition

Amount of cumulative decrease in investment from unrealized loss when cost for federal income tax purpose exceeds value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(h)(2)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479886/946-10-S99-3

+ Details

Name:	us-gaap_TaxBasisOfInvestmentsGrossUnrealizedDepreciation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant