Closing stock price on last trading day.

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- Definition

Common Stock Shares Initially Reserved For Future Issuance

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- Definition

The maximum number of shares (or other type of equity) approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-compensation plan, as stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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No definition available.

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- Definition

The number of years that an award under the equity-based compensation plan would be outstanding.

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No definition available.

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- Definition

The total shares, net of any subsequent amendments or adjustments, transferred from previous equity-based compensation plans.

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (j)

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 2

-Subparagraph (a)(1)

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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-Section 50

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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-Publisher FASB

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Name Accounting Standards Codification

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-Subparagraph (e)(1)

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Share Based Compensation (Narrative) (Details) (USD $)	12 Months Ended
Share Based Compensation (Narrative) (Details) (USD $)	Mar. 28, 2015	Mar. 29, 2014	Mar. 30, 2013	May 31, 2013	May 31, 2010	Aug. 31, 2007
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares authorized for issuance	5,001,620
Total shares exercisable	1,098,601	1,160,572	984,917
Weighted average exercise price, exercisable	$ 31.09
Options available for grant	1,963,763
Vesting period of employee options	4 years
Weighted average contractual term, options outstanding	2 years 8 months 12 days	3 years 1 month 6 days
Weighted average contractual term of all options exercisable	2 years 2 months 12 days	2 years 9 months 18 days
Compensation expenses recognition period related to nonvested fixed stock options	2 years
Aggregate intrinsic value, options outstanding	$ 46,700,000	$ 44,200,000
Aggregate intrinsic value of all options exercisable	37,200,000	31,500,000
Fair value of awards vested under the Company's stock plans	3,500,000	3,600,000	2,700,000
Aggregate intrinsic value, Company's closing stock price	$ 64.96mnro_ClosingStockPriceOnLastTradingDay	$ 56.51mnro_ClosingStockPriceOnLastTradingDay	$ 39.71mnro_ClosingStockPriceOnLastTradingDay
Aggregate intrinsic value of options exercised	10,300,000	7,400,000	10,600,000
Unrecognized compensation expense related to non-vested fixed stock options	3,100,000
Cash received from stock option exercises	8,664,000	4,314,000	2,957,000
Tax benefit from exercise of stock options	$ 2,208,000	$ 1,866,000	$ 2,764,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee options term	6 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee options term	10 years
Incentive Stock Option Plan 2007 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares initially reserved for future issuance	873,000
Common shares authorized for issuance						1,501,620
Share based compensation arrangement by share based payment award shares transferred from previous plan						628,620
Share based compensation arrangement by share based payment award additional number of shares authorized				2,000,000	1,500,000
Incentive Stock Option Plan 1994 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares authorized for issuance	675,345
Incentive Stock Option Plan 1998 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares authorized for issuance	4,016,250
Incentive Stock Option Plan 2003 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares authorized for issuance	315,000