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Summary of Significant Accounting Policies (Summary Of Estimated Fair Value Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Jul. 31, 2014	Jan. 31, 2014
Carrying value	$ 634,739us-gaap_LongTermDebtNoncurrent	$ 625,600us-gaap_LongTermDebtNoncurrent	$ 798,319us-gaap_LongTermDebtNoncurrent
6.50% Notes [Member]
Carrying value	215,000us-gaap_LongTermDebtNoncurrent / us-gaap_LongtermDebtTypeAxis = mtn_SixPointFiveZeroPercentNotesMember
Fair value	223,063us-gaap_DebtInstrumentFairValue / us-gaap_LongtermDebtTypeAxis = mtn_SixPointFiveZeroPercentNotesMember
Industrial Development Bonds [Member]
Carrying value	41,200us-gaap_LongTermDebtNoncurrent / us-gaap_LongtermDebtTypeAxis = mtn_IndustrialDevelopmentBondsMember
Fair value	47,014us-gaap_DebtInstrumentFairValue / us-gaap_LongtermDebtTypeAxis = mtn_IndustrialDevelopmentBondsMember
Other Long-Term Debt [Member]
Carrying value	11,984us-gaap_LongTermDebtNoncurrent / us-gaap_LongtermDebtTypeAxis = mtn_OtherLongTermDebtMember
Fair value	$ 12,679us-gaap_DebtInstrumentFairValue / us-gaap_LongtermDebtTypeAxis = mtn_OtherLongTermDebtMember

X

- 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=28364263&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=28364263&loc=d3e13476-108611

+ Details

Name:	us-gaap_DebtInstrumentFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- 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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: 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

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=mtn_IndustrialDevelopmentBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=mtn_OtherLongTermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=mtn_SixPointFiveZeroPercentNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: