Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation Plans (Details)

v2.4.1.9
Share-Based Compensation Plans (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
May 02, 2015
May 03, 2014
Share-based compensation    
Share-based compensation expense $ 4.5us-gaap_AllocatedShareBasedCompensationExpense $ 4.0us-gaap_AllocatedShareBasedCompensationExpense
Non-Vested Deferred Stock Units and Restricted Stock Shares    
Unrecognized compensation cost    
Unrecognized compensation cost $ 27.2us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockAndRestrictedStockUnitMember
 
Compensation recognition period 1 year 10 months 24 days  
DSUs    
Additional information    
Shares relinquished for tax withholding 85,247us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
 
Vesting period 3 years  
Time-Based DSUs    
Shares    
Non-Vested at the beginning of the period (in shares) 378,518us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Granted (in shares) 344,620us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Vested (in shares) (228,837)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Forfeited (in shares) (10,529)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Non-Vested at the end of the period (in shares) 483,772us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Weighted-Average Grant-Date Fair Value    
Non-Vested at the beginning of the period (in dollars per share) $ 42.67us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Granted (in dollars per share) $ 52.28us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Vested (in dollars per share) $ 43.81us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Forfeited (in dollars per share) $ 34.58us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Non-Vested at the end of the period (in dollars per share) $ 49.16us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Time-Based DSUs | Awards granted prior to April 3, 2013    
Shares    
Non-Vested at the end of the period (in shares) 17,576us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardDateAxis
= mw_GrantedPriorTo3April2013Member
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsTimeBasedMember
 
Performance-Based DSUs, including performance units    
Shares    
Non-Vested at the beginning of the period (in shares) 170,789us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedIncludingPerformanceUnitsMember
 
Granted (in shares) 28,660us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedIncludingPerformanceUnitsMember
 
Vested (in shares) (18,977)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedIncludingPerformanceUnitsMember
 
Forfeited (in shares) (20,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedIncludingPerformanceUnitsMember
 
Non-Vested at the end of the period (in shares) 160,472us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedIncludingPerformanceUnitsMember
 
Weighted-Average Grant-Date Fair Value    
Non-Vested at the beginning of the period (in dollars per share) $ 43.94us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedIncludingPerformanceUnitsMember
 
Granted (in dollars per share) $ 52.75us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedIncludingPerformanceUnitsMember
 
Vested (in dollars per share) $ 46.41us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedIncludingPerformanceUnitsMember
 
Forfeited (in dollars per share) $ 33.09us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedIncludingPerformanceUnitsMember
 
Non-Vested at the end of the period (in dollars per share) $ 46.58us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedIncludingPerformanceUnitsMember
 
Performance-based DSUs    
Shares    
Granted (in shares) 22,645us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedMember
 
Additional information    
Number of shares of common stock received for each performance share 1mw_CommonStockContingentRight
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedMember
 
Performance-based DSUs | Granted in April 2014    
Additional information    
Number of shares of common stock received for each performance share 1mw_CommonStockContingentRight
/ us-gaap_AwardDateAxis
= mw_GrantedInApril2014Member
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceBasedMember
 
Vesting period 1 year  
Performance units    
Shares    
Granted (in shares) 6,015us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceUnitsMember
 
Performance units | Maximum    
Additional information    
Number of shares of common stock received for each performance share 2.25mw_CommonStockContingentRight
/ us-gaap_AwardTypeAxis
= mw_RestrictedStockUnitsPerformanceUnitsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
 
Restricted Stock    
Shares    
Non-Vested at the beginning of the period (in shares) 67,790us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Granted (in shares) 3,276us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Vested (in shares) (22,498)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Forfeited (in shares) (19,360)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Non-Vested at the end of the period (in shares) 29,208us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Weighted-Average Grant-Date Fair Value    
Non-Vested at the beginning of the period (in dollars per share) $ 37.05us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Granted (in dollars per share) $ 57.23us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Vested (in dollars per share) $ 30.57us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Forfeited (in dollars per share) $ 27.77us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
 
Non-Vested at the end of the period (in dollars per share) $ 50.47us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember