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Stock Compensation Plan (Schedule Of Share Based Compensation Restricted Stock Units Activity) (Details) (Restricted Stock Units (RSUs) [Member], USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Jul. 31, 2012
Restricted Stock Units (RSUs) [Member] |
Awards, outstanding beginning balance (in shares) | 408
Awards, granted (in shares) | 180
Awards, vested (in shares) | (234)
Awards, forfeited (in shares) | (36)
Awards, outstanding ending balance (in shares) | 318
Weighted-average grant-date fair value, outstanding beginning balance (in dollars per share) | $ 33.47
Weighted-average grant-date fair value, granted (in dollars per share) | $ 38.15
Weighted-average grant-date fair value, vested (in dollars per share) | $ 39.31
Weighted-average grant-date fair value, forfeited (in dollars per share) | $ 36.38
Weighted-average grant-date fair value, outstanding ending balance (in dollars per share) | $ 37.82

X
- Definition The number of restricted stock units vested during the period. + References No definition available. + Details
Name: | mtn_NumberOfRestrictedStockUnitsVestedDuringPeriod
Namespace Prefix: | mtn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of restricted share units, that were forfeited during the reporting period. + References No definition available. + Details
Name: | mtn_ShareBasedCompensationArrangementRestrictedStockUnitsForfeitedInPeriod
Namespace Prefix: | mtn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value as of the grant date of restricted share units that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan. + References No definition available. + Details
Name: | mtn_ShareBasedCompensationArrangementRestrictedStockUnitsForfeitedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | mtn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net number of restricted share units granted during the period. + References No definition available. + Details
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Namespace Prefix: | mtn_
Data Type: | xbrli:sharesItemType
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Period Type: | duration

X
- Definition The number of non-vested restricted share units, that validly exist and are outstanding as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | mtn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average fair value of nonvested restricted share units for which the employer is contingently obligated to issue equity instruments to an employee who has not yet satisfied service criteria necessary to gain title to underlying shares or units. + References No definition available. + Details
Name: | mtn_ShareBasedCompensationArrangementRestrictedStockUnitsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix: | mtn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average fair value as of grant date pertaining to restricted share units for which the grantee gained the right during the reporting period, by satisfying service requirements, to receive shares or units in accordance with the terms of the arrangement. + References No definition available. + Details
Name: | mtn_ShareBasedCompensationArrangementRestrictedStockUnitsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | mtn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value at grant date for nonvested restricted share units issued during the period. + References No definition available. + Details
Name: | mtn_ShareBasedCompensationArrangementRestriictedStockUnitsGrantedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | mtn_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration