The number of units sold as shares during the period.

No definition available.

Name:	mcaau_AdditionalUnitsSoldOfShares
Namespace Prefix:	mcaau_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The price per share amount of warrants or rights outstanding.

+ References

No definition available.

+ Details

Name:	mcaau_ClassOfWarrantOrRightPriceOfWarrantsOrRights
Namespace Prefix:	mcaau_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The period of time after a business combination for transfer, assign or sell any shares or warrants of the company subject to certain limited exceptions in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	mcaau_ThresholdDaysForTransferAssignOrSellAnySharesOrWarrantsAfterCompletionOfInitialBusinessCombinationSubjectToCertainLimitedExceptions
Namespace Prefix:	mcaau_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

+ Details

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

- Definition

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.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=mcaau_PrivatePlacementWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_OverAllotmentOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

PRIVATE PLACEMENT (Details) - Private Placement Warrants - USD ($)			6 Months Ended
	Nov. 12, 2021	Nov. 09, 2021	Jun. 30, 2023
PRIVATE PLACEMENT
Number of warrants issued	13,500,000
Price of warrants		$ 1.00	$ 1.00
Over-allotment option
PRIVATE PLACEMENT
Additional units sold of shares	1,500,000
Private Placement
PRIVATE PLACEMENT
Number of warrants issued		12,000,000
Price of warrants		$ 1.00
Aggregate purchase price	$ 11,500,000	$ 12,000,000
Threshold days for transfer, assign or sell any shares or warrants of the company, after the completion of the initial business combination subject to certain limited exceptions			30 days