Name:	mnro_BusinessAcquisitionPurchasePriceAllocationGoodwillAmount1
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The number of stores acquired by the entity during the period.

No definition available.

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Total cash payments made to acquire business adjusted for purchase accounting.

No definition available.

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Data Type:	xbrli:monetaryItemType
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The number of single store acquisition transactions during the period.

No definition available.

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In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Amount of assets acquired at the acquisition date.

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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of deferred tax asset attributable to deductible temporary differences and carryforwards that are expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The amount of inventory recognized as of the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Data Type:	xbrli:monetaryItemType
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The amount of property, plant, and equipment recognized as of the acquisition date.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

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Data Type:	na
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Name:	us-gaap_BusinessAcquisitionAxis=mnro_GoldCoastAcquisitionMember
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Data Type:	na
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Name:	us-gaap_BusinessAcquisitionAxis=mnro_HennellyAcquistionMember
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Data Type:	na
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Name:	us-gaap_BusinessAcquisitionAxis=mnro_KanRockAcquisitionMember
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Data Type:	na
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Data Type:	na
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Data Type:	na
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Namespace Prefix:
Data Type:	na
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Name:	us-gaap_BusinessAcquisitionAxis=mnro_SingleStoreAcquisitionsMember
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Data Type:	na
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Name:	us-gaap_BusinessAcquisitionAxis=mnro_SsFirestoneAcquisitionMember
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Data Type:	na
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