The accumulated increase (decrease) in fair value of credit derivatives or similar instruments related to financial assets designated as measured at fair value through profit or loss. [Refer: Derivatives [member]; Increase (decrease) in fair value of financial assets designated as measured at fair value through profit or loss related credit derivatives or similar instruments; Financial assets]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 9
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_9_d&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_AccumulatedChangesInFairValueOfFinancialAssetsRelatedCreditDerivativesOrSimilarInstruments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

The accumulated increase (decrease) in the fair value of financial liabilities that is attributable to changes in the credit risk of the liabilities. [Refer: Credit risk [member]; Market risk [member]; Increase (decrease) in fair value of financial liability, attributable to changes in credit risk of liability]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 10
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_10_a&doctype=Standard
-URIDate 2025-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 10A
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_10A_a&doctype=Standard
-URIDate 2025-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 45
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_45_a&doctype=Standard
-URIDate 2025-03-27

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 46
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_46_a&doctype=Standard
-URIDate 2025-03-27

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 45
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_45_a&doctype=Standard
-URIDate 2025-03-27

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2027-01-01
-Name IFRS
-Number 19
-IssueDate 2025-01-01
-Paragraph 46
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_46_a&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_AccumulatedChangesInFairValueOfFinancialLiabilityAttributableToChangesInCreditRiskOfLiability
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfInformationAboutCreditExposuresDesignatedAsMeasuredAtFairValueThroughProfitOrLossAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The fair value of financial assets. [Refer: At fair value [member]; Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 25
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_25&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_FinancialAssetsAtFairValue
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	ifrs-full_FinancialAssetsDesignatedAsMeasuredAtFairValueAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities]

+ References

+ Details

Name:	ifrs-full_FinancialLiabilitiesAtFairValue
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_NotionalAmount
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Refers to hedge ratio of derivative instrument.

+ References

No definition available.

+ Details

Name:	mrno_HedgeRatio
Namespace Prefix:	mrno_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	mrno_InterestRateRisksAbstract
Namespace Prefix:	mrno_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of interest rate risk exposure adopted by the company.

+ References

No definition available.

+ Details

Name:	mrno_PercentageOfInterestRateRiskExposureAdopted
Namespace Prefix:	mrno_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	ifrs-full_ClassesOfFinancialLiabilitiesAxis=mrno_WarrantLiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level2OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_InterestRateRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_InterestRateSwapContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mrno_SabadellSAInstitucionDeBancaMultipleSabadellMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mrno_CiaxabankSAInstitucionDeBancaMultipleCaixabankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Financial instruments - Fair value and risk management, Interest-Bearing Financial Instruments (Details)	12 Months Ended
	Dec. 31, 2025 MXN ($)	Dec. 31, 2024 MXN ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 MXN ($)	Dec. 31, 2023 USD ($)
Warrants Liability [Member] \| Level 2 [Member]
Financial liabilitys measured at fair value [Abstract]
Carrying amount	$ (7,965,416)	$ (75,827,403)
Interest Rate Risk [Member] \| Warrants Liability [Member]
Financial liabilitys measured at fair value [Abstract]
Carrying amount		(75,827,403)
Effects recognized in P&L		(51,946,426)
Interest Rate Risk [Member] \| Warrants Liability [Member] \| Level 2 [Member]
Financial liabilitys measured at fair value [Abstract]
Carrying amount	7,965,416	(75,827,403)
Effects recognized in P&L	$ (63,526,324)	(51,946,426)
Interest Rate Risk [Member] \| Interest Rate Swaps [Member]
Interest rate risks [Abstract]
Percentage of interest rate risk exposure adopted	70.00%
Hedge ratio	1
Financial assets measured at fair value [Abstract]
Carrying amount		0		$ 116,923,727
Effects recognized in P&L		(43,348,480)		(75,868,263)
Interest Rate Risk [Member] \| Interest Rate Swaps [Member] \| Sabadell [Member] \| Level 2 [Member]
Financial assets measured at fair value [Abstract]
Nominal amount			$ 0		$ 73,376,432
Carrying amount		0		68,146,850
Effects recognized in P&L		(19,726,835)		(45,855,988)
Interest Rate Risk [Member] \| Interest Rate Swaps [Member] \| Ciaxabank [Member] \| Level 2 [Member]
Financial assets measured at fair value [Abstract]
Nominal amount			$ 0		$ 57,438,000
Carrying amount		0		48,776,877
Effects recognized in P&L		$ (23,621,645)		$ (30,012,275)