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Leasing (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Mar. 28, 2020 | Mar. 30, 2019
Sale Leaseback Transaction [Line Items] |  |
Finance lease and financing obligation assets, net | $ 196,575 | $ 128,029
Long-term finance leases and financing obligations | 298,373 | $ 238,089
Operating lease payments, related to options to extend, reasonably certain of being exercised | 74,500 |
Finance lease payments, related to options to extend, reasonable certain of being exercised | 115,800 |
Lease payments, leases signed but not yet commenced | 11,900 |
Failed Sale Leasebacks That Were Assumed Through Acquisitions [Member] |  |
Sale Leaseback Transaction [Line Items] |  |
Finance lease and financing obligation assets, net | 4,500 |
Long-term finance leases and financing obligations | $ 7,500 |
Minimum [Member] |  |
Sale Leaseback Transaction [Line Items] |  |
Remaining lease term | 1 year |
Option to extend, term of option | 1 year |
Maximum [Member] |  |
Sale Leaseback Transaction [Line Items] |  |
Remaining lease term | 38 years |
Option to extend, term of option | 30 years |

X
- Definition Finance lease payments, related to options to extend, reasonable certain of being exercised + References No definition available. + Details
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- Definition Lease payments, leases signed but not yet commenced + References No definition available. + Details
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Namespace Prefix: | mnro_
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- Definition Lessee, Option to extend, term of option + References No definition available. + Details
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- Definition Lessee, Remaining Lease Term + References No definition available. + Details
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- Definition Operating lease payments, related to options to extend, reasonably certain of being exercised + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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X
- Definition Amount of lessee's right to use underlying asset under finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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Period Type: | instant

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- 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
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- Details
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- Details
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- Details
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