XML 40 R29.htm IDEA: XBRL DOCUMENT
v3.21.2

Cash Dividend (Narrative) (Details) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Sep. 25, 2021 | Sep. 26, 2020
Dividends to shareholders | $ 16,991 | $ 14,875
First Amendment To Credit Facility [Member] |  |
Debt instrument, Allowable dividend or distribution in next year | $ 38,500 |

X
- Definition Debt instrument, Allowable dividend or distribution in next year + References No definition available. + Details
Name: | mnro_DebtInstrumentAllowableDividendOrDistributionInNextYear
Namespace Prefix: | mnro_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDividends
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_CreditFacilityAxis=mnro_FirstAmendmentToCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |