Borrowings - Narrative (Details)	Sep. 30, 2025	Dec. 31, 2024
Debt Disclosure [Abstract]
Asset coverage ratio	197.00%	196.00%

Percentage of asset coverage ratio based on aggregate borrowings outstanding.

No definition available.

Name:	mcip_AssetCoverageRatioPercentage
Namespace Prefix:	mcip_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant