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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to finance leases and financing obligations current assumed in connection with a business combination for which the initial accounting was incomplete.

No definition available.

Name:	mnro_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinanceLeasesAndFinancingObligationsCurrent
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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to long term finance leases and financing obligations assumed in connection with a business combination for which the initial accounting was incomplete.

No definition available.

Name:	mnro_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentFinanceLeasesAndFinancingObligationsNoncurrent
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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to finance lease assets acquired in connection with a business combination for which the initial accounting was incomplete.

No definition available.

Name:	mnro_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyFinanceLeaseAssets
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Number Of Distribution Center

No definition available.

Name:	mnro_NumberOfDistributionCenter
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of retread centers acquired

No definition available.

Name:	mnro_NumberOfRetreadCentersAcquired
Namespace Prefix:	mnro_
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Balance Type:	na
Period Type:	duration

Number of stores yet to open

No definition available.

Name:	mnro_NumberOfStoresYetToOpen
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Balance Type:	na
Period Type:	duration

Number of wholesale centers acquired

No definition available.

Name:	mnro_NumberOfWholesaleCentersAcquired
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Period Type:	duration

The number of stores acquired and operating by the entity during the period.

No definition available.

Name:	mnro_Numberofstoresacquired
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Store acquisitions related to acquisition growth strategy

No definition available.

Name:	mnro_StoreAcquisitionsRelatedToAcquisitionGrowthStrategy
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Store acquisitions related to greenfield store growth strategy

No definition available.

Name:	mnro_StoreAcquisitionsRelatedToGreenfieldStoreGrowthStrategy
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Period Type:	duration

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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Data Type:	xbrli:dateItemType
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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.

No definition available.

Name:	us-gaap_BusinessAcquisitionLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.

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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to inventory acquired in connection with a business combination for which the initial accounting was incomplete.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to property, plant, and equipment acquired in connection with a business combination for which the initial accounting was incomplete.

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Data Type:	xbrli:monetaryItemType
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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The number of businesses acquired by the entity during the period.

No definition available.

Name:	us-gaap_NumberOfBusinessesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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Namespace Prefix:
Data Type:	na
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Name:	us-gaap_BusinessAcquisitionAxis=mnro_SSUnlimitedInc.Member
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Data Type:	na
Balance Type:
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Namespace Prefix:
Data Type:	na
Balance Type:
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Data Type:	na
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Balance Type:
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