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Stock Compensation Plan (Schedule of Share Based Compensation SARs Activity) (Details) (Stock Appreciation Rights (SARs) [Member], USD $) In Thousands, except Per Share data | 12 Months Ended
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Jul. 31, 2011
Stock Appreciation Rights (SARs) [Member] |
Awards, outstanding beginning balance | 1,228
Awards, granted | 371
Awards, vested | (288)
Awards, forfeited | (11)
Awards, outstanding ending balance | 1,300
Weighted-average grant-date fair value, outstanding beginning balance | $ 7.37
Weighted-average grant-date fair value, granted | $ 13.84
Weighted-average grant-date fair value, vested | $ 14.98
Weighted-average grant-date fair value, forfeited | $ 10.95
Weighted-average grant-date fair value, outstanding ending balance | $ 11.17

X
- Definition The number of stock appreciation rights, that were forfeited during the reporting period. + Details
Name: | mtn_ShareBasedCompensationArrangementSarsForfeitedInPeriod
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 stock appreciation rights 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. + Details
Name: | mtn_ShareBasedCompensationArrangementSarsForfeitedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | mtn
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of grants made during the period on stock appreciation rights. + Details
Name: | mtn_ShareBasedCompensationArrangementSarsGrantsInPeriod
Namespace Prefix: | mtn
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value at grant date for nonvested stock appreciation rights issued during the period. + Details
Name: | mtn_ShareBasedCompensationArrangementSarsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | mtn
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of non-vested stock appreciation rights, that validly exist and are outstanding as of the balance sheet date. + Details
Name: | mtn_ShareBasedCompensationArrangementSarsNonvestedNumber
Namespace Prefix: | mtn
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average fair value of nonvested stock appreciation rights 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 the underlying shares or units. + Details
Name: | mtn_ShareBasedCompensationArrangementSarsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix: | mtn
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of stock appreciation rights, that vested during the reporting period. + Details
Name: | mtn_ShareBasedCompensationArrangementSarsVestedInPeriod
Namespace Prefix: | mtn
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value as of grant date pertaining to stock appreciation rights for which the grantee gained the right during the reporting period, by satisfying service requirements, to retain shares or units, in accordance with the terms of the arrangement. + Details
Name: | mtn_ShareBasedCompensationArrangementSarsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | mtn
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration