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Summary of Significant Accounting Policies (Summary Of Estimated Fair Value Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified | Apr. 30, 2015 | Jul. 31, 2014 | Apr. 30, 2014
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Carrying value | $ 379,796 us-gaap_LongTermDebtNoncurrent | $ 625,600 us-gaap_LongTermDebtNoncurrent | $ 799,223 us-gaap_LongTermDebtNoncurrent
6.50% Notes [Member] |  |  |
Carrying value | 215,000 us-gaap_LongTermDebtNoncurrent / us-gaap_LongtermDebtTypeAxis = mtn_SixPointFiveZeroPercentNotesMember |  |
Fair value | 221,988 us-gaap_DebtInstrumentFairValue / us-gaap_LongtermDebtTypeAxis = mtn_SixPointFiveZeroPercentNotesMember |  |
Industrial Development Bonds [Member] |  |  |
Carrying value | 41,200 us-gaap_LongTermDebtNoncurrent / us-gaap_LongtermDebtTypeAxis = mtn_IndustrialDevelopmentBondsMember |  |
Fair value | 42,848 us-gaap_DebtInstrumentFairValue / us-gaap_LongtermDebtTypeAxis = mtn_IndustrialDevelopmentBondsMember |  |
Other Long-Term Debt [Member] |  |  |
Carrying value | 11,875 us-gaap_LongTermDebtNoncurrent / us-gaap_LongtermDebtTypeAxis = mtn_OtherLongTermDebtMember |  |
Fair value | $ 12,521 us-gaap_DebtInstrumentFairValue / us-gaap_LongtermDebtTypeAxis = mtn_OtherLongTermDebtMember |  |

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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13476-108611 + Details
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Period Type: | instant

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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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- Details
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