RELATED PARTY ARRANGEMENTS - Capital Gains Incentive Fee (Details)	12 Months Ended
Dec. 31, 2025
RELATED PARTY ARRANGEMENTS
Capital gains incentive fee prior to listing (as a percent)	10.00%
Capital gains incentive fee subsequent to listing (as a percent)	15.00%

Percentage of cumulative aggregate realized capital gains under capital gains incentive fee, subsequent to listing of shares in securities exchange.

No definition available.

Name:	spcbdc_CapitalGainsIncentiveFeeAsPercentageOfCumulativeAggregateRealizedCapitalGainsSubsequentToListing
Namespace Prefix:	spcbdc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration