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Income Taxes (Details) (USD $) In Millions, unless otherwise specified | 1 Months Ended | 9 Months Ended
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Dec. 31, 2007 | Apr. 30, 2015
Income Tax Disclosure [Abstract] |  |
Net Operating Loss Carryforwards Recognized | $ 8.0 mtn_NetOperatingLossCarryforwardsRecognized |
Operating Loss Carryforward |  | 73.8 mtn_OperatingLossCarryforward
Tax Refund on Amended Returns |  | 6.2 mtn_TaxRefundOnAmendedReturns
Unrecognized Tax Benefits, Period Increase (Decrease) |  | 27.7 us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease
Reduction in Federal Tax Liability |  | 19.6 mtn_ReductionInFederalTaxLiability
Tax Adjustments, Settlements, and Unusual Provisions |  | $ 23.8 us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions

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- Definition The amount of Section 382 net operating loss carryforwards recognized, or utilized, each year through calendar year December 31, 2007. + References No definition available. + Details
Name: | mtn_NetOperatingLossCarryforwardsRecognized
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of Section 382 net operating loss carryforwards that the Company is seeking to utilize under amended previously filed tax returns. + References No definition available. + Details
Name: | mtn_OperatingLossCarryforward
Namespace Prefix: | mtn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition The reduction in federal tax liability the Company has taken relating to net operating loss carryforwards that the Company is seeking to utilize under amended previously filed tax returns. + References No definition available. + Details
Name: | mtn_ReductionInFederalTaxLiability
Namespace Prefix: | mtn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The tax refund amount requested by the Company related to amended returns. + References No definition available. + Details
Name: | mtn_TaxRefundOnAmendedReturns
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- Details
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- Definition Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=51675352&loc=d3e28446-109314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=51675352&loc=d3e28511-109314 + Details
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- Definition The net amount of all increases and decreases in unrecognized tax benefits for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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