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

| X                                                                                                                                                                                                                                                                                                                                                                  |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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**Namespace Prefix:**mtn_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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**Period Type:**instant |
| X                                                                                                                                                                                                                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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 |
| X                                                                                                                                                                                                                                                                                         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The tax refund amount requested by the Company related to amended returns.
+ References
No definition available.
+ Details**Name:**mtn_TaxRefundOnAmendedReturns**Namespace Prefix:**mtn_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_IncomeTaxDisclosureAbstract**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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=d3e28446-109314Reference 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**Name:**us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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
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