XML 57 R42.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Acquisitions (Narrative) (Details) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
May 13, 2018 store property | Apr. 01, 2018 store | Mar. 31, 2018 USD ($) store | Mar. 25, 2017 USD ($) store property
Business Acquisition [Line Items] |  |  |  |
Costs related to completed acquisitions | $ |  |  | $ 500 | $ 1,000
Sales for acquired entities | $ |  |  | 14,800 | 104,900
Net income (loss) for acquired entities | $ |  |  | 100 | (1,000)
Total consideration transferred, portion in cash | $ |  |  |  | 141,700
Payable to a seller | $ |  |  |  | 100
Change in estimates, property, plant and equipment | $ |  |  | 1,400 |
Change in estimates, intangible assets | $ |  |  | (2,200) |
Change in estimates, long-term deferred income tax assets | $ |  |  | (300) |
Change in current liabilities | $ |  |  | (100) |
Change in estimates, long-term capital leases and financing obligations | $ |  |  | 200 |
Change in estimates, other liabilities | $ |  |  | 100 |
Adjustments to goodwill related to purchase accounting | $ |  |  | $ 1,331 | $ 1,953
Maximum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Store acquisitions related to greenfield store growth strategy |  |  | 4 |
Minimum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Store acquisitions related to acquisition growth strategy |  |  | 5 |
Store acquisitions related to greenfield store growth strategy |  |  | 1 |
Free Service Tire Company, Inc. [Member] | Subsequent Event [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date | May 13, 2018 |  |  |
Number of stores acquired | 12 |  |  |
Number of retread centers acquired | property | 1 |  |  |
Number of wholesale centers acquired | property | 4 |  |  |
Liberty Auto Group, Inc. [Member] | Subsequent Event [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  | Apr. 01, 2018 |  |
Number of stores acquired |  | 4 |  |
Appalachian Tire Products, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Mar. 04, 2018 |
Number of stores acquired |  |  | 7 |
Mattoon Muffler, Inc. and Charleston Muffler, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Mar. 04, 2018 |
Number of stores acquired |  |  | 2 |
City Tire Co., Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Mar. 04, 2018 |
Number of stores acquired |  |  | 1 |
Devenir Enterprises, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Mar. 01, 2018 |
Number of stores acquired |  |  | 1 |
Valley Tire Co., Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jan. 14, 2018 |
Number of stores acquired |  |  | 3 |
MLR, Incorporated [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Dec. 17, 2017 |
Number of stores acquired |  |  | 1 |
TriGar Tire & Auto Service Center, LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Dec. 10, 2017 |
Number of stores acquired |  |  | 2 |
TriGar Tire & Auto Service Center, LLC., Operated By Monro [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of stores acquired |  |  | 1 |
TriGar Tire & Auto Service Center, LLC., Operated By Mr. Tire [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of stores acquired |  |  | 1 |
Auto MD, LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Aug. 13, 2017 |
Number of stores acquired |  |  | 8 |
UVR, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jul. 30, 2017 |
Number of stores acquired, both operating and not opened |  |  | 13 |
Number of stores acquired |  |  | 12 |
Number of stores never opened |  |  | 1 |
Norman Young Tires, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jul. 09, 2017 |
Number of stores acquired |  |  | 1 |
D&S Pulaski, LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jun. 25, 2017 |
Number of stores acquired |  |  | 1 |
J & R Diversified, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jun. 11, 2017 |
Number of stores acquired |  |  | 2 |
Michael N. McGroarty, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jun. 11, 2017 |
Number of stores acquired |  |  | 1 |
Tires Plus LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jun. 02, 2017 |
Number of stores acquired |  |  | 1 |
Bob Sumerel Tire Co., Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | May 21, 2017 |
Number of stores acquired |  |  | 1 |
Collier Automotive Group, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Apr. 23, 2017 |
Number of stores acquired |  |  | 1 |
Nona, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Feb. 26, 2017 |
Number of stores acquired |  |  |  | 16
Thrifty Tire of Roxboro, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Feb. 05, 2017 |
Number of stores acquired |  |  |  | 2
Hamel Tire Center Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Oct. 16, 2016 |
Number of stores acquired |  |  |  | 1
Parkway D/C Enterprises, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Oct. 02, 2016 |
Number of stores acquired |  |  |  | 3
Florida Tire Service, LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Sep. 19, 2016 |
Number of stores acquired |  |  |  | 1
Davco Development Company and Ricketts, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Sep. 18, 2016 |
Number of stores acquired |  |  |  | 2
Clark Tire & Auto, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Sep. 11, 2016 |
Number of stores acquired |  |  |  | 26
Number of retread centers acquired | property |  |  |  | 1
Number of wholesale centers acquired | property |  |  |  | 4
NTI, LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jul. 18, 2016 |
Number of stores acquired |  |  |  | 1
Kwik-Fit Tire & Service [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jul. 17, 2016 |
Number of stores acquired |  |  |  | 1
Task Holdings, Inc. and Autopar, Inc. Acquisition [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jul. 10, 2016 |
Number of stores acquired |  |  |  | 4
Harlow Tire Company Acquisition [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jun. 26, 2016 |
Number of stores acquired |  |  |  | 1
Express Tire Centers, LLC. Acquisition [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jun. 19, 2016 |
Number of stores acquired |  |  |  | 2
Pioneer Tire Pros Acquisition [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | May 08, 2016 |
Number of stores acquired |  |  |  | 1
McGee Tire Stores, Inc. Acquisition [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | May 01, 2016 |
Number of stores acquired |  |  |  | 29
Number of retread centers acquired | property |  |  |  | 1
Fiscal 2017 Acquisitions [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total consideration transferred | $ |  |  |  | $ 141,832
Fiscal 2018 Acquisitions [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total consideration transferred | $ |  |  | $ 22,614 |

X
- Definition This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to long term capital leases and financing obligations assumed in connection with a business combination for which the initial accounting was incomplete. + References No definition available. + Details
Name: | mnro_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentCapitalLeasesAndFinancingObligationsNoncurrent
Namespace Prefix: | mnro_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to current liabilities acquired in connection with a business combination for which the initial accounting was incomplete. + References No definition available. + Details
Name: | mnro_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentCurrentLiabilities
Namespace Prefix: | mnro_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to deferred long-term income tax asset acquired in connection with a business combination for which the initial accounting was incomplete. + References No definition available. + Details
Name: | mnro_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredIncomeTaxAsset
Namespace Prefix: | mnro_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to other liabilities assumed in connection with a business combination for which the initial accounting was incomplete. + References No definition available. + Details
Name: | mnro_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherLiabilities
Namespace Prefix: | mnro_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of retread centers acquired + References No definition available. + Details
Name: | mnro_NumberOfRetreadCentersAcquired
Namespace Prefix: | mnro_
Data Type: | xbrli:positiveIntegerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of stores acquired during the period, including operating stores and stores not opened. + References No definition available. + Details
Name: | mnro_NumberOfStoresAcquiredOperatingAndNotOpened
Namespace Prefix: | mnro_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Stores Never Opened + References No definition available. + Details
Name: | mnro_NumberOfStoresNeverOpened
Namespace Prefix: | mnro_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of wholesale centers acquired + References No definition available. + Details
Name: | mnro_NumberOfWholesaleCentersAcquired
Namespace Prefix: | mnro_
Data Type: | xbrli:positiveIntegerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of stores acquired and operating by the entity during the period. + References No definition available. + Details
Name: | mnro_Numberofstoresacquired
Namespace Prefix: | mnro_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Store acquisitions related to acquisition growth strategy + References No definition available. + Details
Name: | mnro_StoreAcquisitionsRelatedToAcquisitionGrowthStrategy
Namespace Prefix: | mnro_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Store acquisitions related to greenfield store growth strategy + References No definition available. + Details
Name: | mnro_StoreAcquisitionsRelatedToGreenfieldStoreGrowthStrategy
Namespace Prefix: | mnro_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e845-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e848-128460 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- 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_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + Details
Name: | us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 4A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=SL65897772-128472 + Details
Name: | us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 4A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=SL65897772-128472 + Details
Name: | us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e961-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillPurchaseAccountingAdjustments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_FreeServiceTireCompanyInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_LibertyAutoGroupInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_AppalachianTireProductsInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_MattoonMufflerInc.AndCharlestonMufflerInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_CityTireCo.Inc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_DevenirEnterprisesInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_ValleyTireCo.Inc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_MlrIncorporatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_TrigarTireAutoServiceCenterLlc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_TrigarTireAutoServiceCenterLlc.OperatedByMonroMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_TrigarTireAutoServiceCenterLlc.OperatedByMr.TireMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_AutoMdLlc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_UvrInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_NormanYoungTiresInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_DSPulaskiLlc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_JRDiversifiedInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_MichaelN.McgroartyInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_TiresPlusLlc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_BobSumerelTireCo.Inc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_CollierAutomotiveGroupInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_NonaInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_ThriftyTireOfRoxboroLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_HamelTireCenterInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_ParkwayDCEnterprisesInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_FloridaTireServiceLlc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_DavcoDevelopmentCompanyAndRickettsInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_ClarkTireAutoInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_NtiLlc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_KwikFitTireServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_TaskHoldingsInc.AndAutoparInc.AcquisitionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_HarlowTireCompanyAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_ExpressTireCentersLlc.AcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_PioneerTireProsAcquisitionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_McgeeTireStoresInc.AcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_Fiscal2017AcquisitionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mnro_CurrentPeriodAcquisitionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |