Condensed Consolidated Financial Statements (Policy)	3 Months Ended
Jun. 24, 2017
Condensed Consolidated Financial Statements [Abstract]
Revisions And Reclassifications	Revisions We have evaluated the principal vs. agent accounting guidance in assessing the appropriate presentation for certain transactions primarily related to our fiscal 2017 acquisitions. We have determined agent accounting is appropriate for such transactions and therefore concluded that amounts previously presented on a gross basis should have been recorded on a net basis. Accordingly, we have revised amounts previously recorded in connection with these transactions during the first quarter of fiscal 2017. The revisions resulted in a reduction of sales and cost of sales by equal amounts of $1.6 million and did not impact gross profit as previously reported.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued new accounting guidance for the reporting of revenue from contracts with customers. This guidance provides guidelines a company will apply to determine the measurement of revenue and timing of when it is recognized. Additional guidance has subsequently been issued to amend or clarify the reporting of revenue from contracts with customers. The guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2017. Early adoption is permitted, but not before the original effective date of December 15, 2016. While the evaluation of the impact of the new revenue recognition guidance on our Consolidated Financial Statements has not yet been fully determined, we anticipate the provisions to primarily impact the deferral of revenue generated by the sale of an extended warranty. Generally, in relation to these provisions, the new guidance will require the transaction price of an arrangement including an extended warranty to be allocated based on the relative standalone selling prices of the extended warranty and the original service/product rather than the contract price of the extended warranty. Therefore, the allocation may impact the amount of revenue deferred. We are required to adopt this guidance utilizing one of two methods: retrospective restatement for each reporting period presented at time of adoption, or a modified retrospective approach with the cumulative effect of initially applying this guidance recognized at the date of initial application. We intend to elect an adoption methodology after we have fully evaluated the impact on our Consolidated Financial Statements. However, we do not expect this change to have a material impact on our Consolidated Financial Statements. We are currently preparing to implement changes to our accounting policies, systems and controls to support the new revenue recognition and disclosure requirements. In February 2016, the FASB issued new accounting guidance related to leases. This guidance establishes a right of use (“ROU”) model that requires a lessee to record a ROU asset and lease liability on the balance sheet for all leases with terms longer than twelve months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition. The guidance is effective for financial statements issued for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. Early adoption is permitted. Approximately 50% of our store leases and all of our land leases are currently not recorded on our balance sheet. Recording ROU assets and liabilities for these leases is expected to have a material impact on our balance sheet. We are currently evaluating the impact that recording ROU assets and liabilities will have on our Consolidated Statement of Comprehensive Income and the financial statement impact that the standard will have on leases which are currently recorded on our Consolidated Balance Sheet. In March 2016, the FASB issued new accounting guidance intended to simplify various aspects related to accounting for share-based payments and their presentation in the financial statements. This guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2016. We have adopted this guidance during the first quarter of fiscal 2018. Amendments to this guidance related to accounting for excess tax benefits have been adopted prospectively and had an immaterial impact on the Consolidated Statement of Comprehensive Income for the quarter ended June 24, 2017. Excess tax benefits related to share-based payments are now included in operating cash flows rather than financing cash flows. This change has been applied prospectively in accordance with the guidance and prior periods have not been adjusted. We have previously classified cash paid for tax withholding purposes as a financing activity in the statement of cash flows. Therefore, there is no change related to this requirement. The amendments allow for a one-time accounting policy election to either account for forfeitures as they occur or continue to estimate forfeitures as required by current guidance. We have elected to continue estimating forfeitures through applying a forfeiture rate. In August 2016, the FASB issued new accounting guidance related to cash flow classification. This guidance clarifies and provides specific guidance on eight cash flow classification issues that are not addressed by current GAAP and thereby reduce the current diversity in practice. This guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2017. Early adoption is permitted. We are currently evaluating the potential impact of the adoption of this guidance on our Consolidated Financial Statements. In January 2017, the FASB issued new accounting guidance which clarifies the definition of a business, particularly when evaluating whether transactions should be accounted for as acquisitions or dispositions of assets or businesses. This guidance provides a screen to determine when a set of assets and activities (collectively referred to as a “set”) is not a business. This screen requires that when substantially all of the fair value of the assets is concentrated in a single identifiable asset or group of similar identifiable assets, the set is not a business. If the screen is not met, the guidance provides a framework to evaluate whether both an input and a substantive process are present to be considered a business. This guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2017. Early adoption is permitted for certain transactions. We are currently evaluating the potential impact of the adoption of this guidance on our Consolidated Financial Statements. In January 2017, the FASB issued new accounting guidance simplifying the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test, which required the determination of an implied fair value of goodwill. Under this guidance, an entity should perform its annual or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. This guidance is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019, and should be applied on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. This guidance is not expected to have an impact on our Consolidated Financial Statements. In March 2017, the FASB issued accounting guidance related to the presentation of net periodic pension cost and net periodic postretirement benefit cost. This guidance requires employers to present the service cost component of the net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. The other components of net benefit cost are to be presented separately from the service cost component and outside of any subtotal of income from operations. Employers will have to disclose the line(s) used to present the other components of net periodic benefit cost, if the components are not presented separately in the income statement. This guidance is effective for fiscal years and interim periods beginning after December 15, 2017, and should be applied retrospectively. Early adoption is permitted as of the beginning of an annual period for which financial statements have not yet been issued. This guidance is not expected to have an impact on our Consolidated Financial Statements. Other recent authoritative guidance issued by the FASB (including technical corrections to the Accounting Standards Codification) and the Securities and Exchange Commission did not, or are not expected to have a material effect on Monro’s Consolidated Financial Statements.
Guarantees	Guarantees At the time we issue a guarantee, we recognize an initial liability for the fair value, or market value, of the obligation we assume under that guarantee. Monro has guaranteed certain lease payments, primarily related to franchisees, amounting to $6.6 million. This amount represents the maximum potential amount of future payments under the guarantees as of June 24, 2017. The leases are guaranteed through April 2020. In the event of default by the franchise owner, Monro generally retains the right to assume the lease of the related store, enabling Monro to re-franchise the location or to operate that location as a Company-operated store. We have recorded a liability related to anticipated defaults under the foregoing leases of $.6 million as of June 24, 2017 and March 25, 2017.

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued new accounting guidance for the reporting of revenue from contracts with customers. This guidance provides guidelines a company will apply to determine the measurement of revenue and timing of when it is recognized. Additional guidance has subsequently been issued to amend or clarify the reporting of revenue from contracts with customers. The guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2017. Early adoption is permitted, but not before the original effective date of December 15, 2016. While the evaluation of the impact of the new revenue recognition guidance on our Consolidated Financial Statements has not yet been fully determined, we anticipate the provisions to primarily impact the deferral of revenue generated by the sale of an extended warranty. Generally, in relation to these provisions, the new guidance will require the transaction price of an arrangement including an extended warranty to be allocated based on the relative standalone selling prices of the extended warranty and the original service/product rather than the contract price of the extended warranty. Therefore, the allocation may impact the amount of revenue deferred. We are required to adopt this guidance utilizing one of two methods: retrospective restatement for each reporting period presented at time of adoption, or a modified retrospective approach with the cumulative effect of initially applying this guidance recognized at the date of initial application. We intend to elect an adoption methodology after we have fully evaluated the impact on our Consolidated Financial Statements. However, we do not expect this change to have a material impact on our Consolidated Financial Statements. We are currently preparing to implement changes to our accounting policies, systems and controls to support the new revenue recognition and disclosure requirements.

In February 2016, the FASB issued new accounting guidance related to leases. This guidance establishes a right of use (“ROU”) model that requires a lessee to record a ROU asset and lease liability on the balance sheet for all leases with terms longer than twelve months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition. The guidance is effective for financial statements issued for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. Early adoption is permitted. Approximately 50% of our store leases and all of our land leases are currently not recorded on our balance sheet. Recording ROU assets and liabilities for these leases is expected to have a material impact on our balance sheet. We are currently evaluating the impact that recording ROU assets and liabilities will have on our Consolidated Statement of Comprehensive Income and the financial statement impact that the standard will have on leases which are currently recorded on our Consolidated Balance Sheet.

In March 2016, the FASB issued new accounting guidance intended to simplify various aspects related to accounting for share-based payments and their presentation in the financial statements. This guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2016. We have adopted this guidance during the first quarter of fiscal 2018. Amendments to this guidance related to accounting for excess tax benefits have been adopted prospectively and had an immaterial impact on the Consolidated Statement of Comprehensive Income for the quarter ended June 24, 2017. Excess tax benefits related to share-based payments are now included in operating cash flows rather than financing cash flows. This change has been applied prospectively in accordance with the guidance and prior periods have not been adjusted. We have previously classified cash paid for tax withholding purposes as a financing activity in the statement of cash flows. Therefore, there is no change related to this requirement. The amendments allow for a one-time accounting policy election to either account for forfeitures as they occur or continue to estimate forfeitures as required by current guidance. We have elected to continue estimating forfeitures through applying a forfeiture rate.

In August 2016, the FASB issued new accounting guidance related to cash flow classification. This guidance clarifies and provides specific guidance on eight cash flow classification issues that are not addressed by current GAAP and thereby reduce the current diversity in practice. This guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2017. Early adoption is permitted. We are currently evaluating the potential impact of the adoption of this guidance on our Consolidated Financial Statements.

In January 2017, the FASB issued new accounting guidance which clarifies the definition of a business, particularly when evaluating whether transactions should be accounted for as acquisitions or dispositions of assets or businesses. This guidance provides a screen to determine when a set of assets and activities (collectively referred to as a “set”) is not a business. This screen requires that when substantially all of the fair value of the assets is concentrated in a single identifiable asset or group of similar identifiable assets, the set is not a business. If the screen is not met, the guidance provides a framework to evaluate whether both an input and a substantive process are present to be considered a business. This guidance is effective for fiscal years and interim periods within those years beginning after December 15, 2017. Early adoption is permitted for certain transactions. We are currently evaluating the potential impact of the adoption of this guidance on our Consolidated Financial Statements.

In January 2017, the FASB issued new accounting guidance simplifying the accounting for goodwill impairment by removing Step 2 of the goodwill impairment test, which required the determination of an implied fair value of goodwill. Under this guidance, an entity should perform its annual or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. This guidance is effective for annual or interim goodwill impairment tests in fiscal years beginning after December 15, 2019, and should be applied on a prospective basis. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. This guidance is not expected to have an impact on our Consolidated Financial Statements.

In March 2017, the FASB issued accounting guidance related to the presentation of net periodic pension cost and net periodic postretirement benefit cost. This guidance requires employers to present the service cost component of the net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. The other components of net benefit cost are to be presented separately from the service cost component and outside of any subtotal of income from operations. Employers will have to disclose the line(s) used to present the other components of net periodic benefit cost, if the components are not presented separately in the income statement. This guidance is effective for fiscal years and interim periods beginning after December 15, 2017, and should be applied retrospectively. Early adoption is permitted as of the beginning of an annual period for which financial statements have not yet been issued. This guidance is not expected to have an impact on our Consolidated Financial Statements.

Other recent authoritative guidance issued by the FASB (including technical corrections to the Accounting Standards Codification) and the Securities and Exchange Commission did not, or are not expected to have a material effect on Monro’s Consolidated Financial Statements.