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Supplementary Balance Sheet Information (Composition Of Property, Plant And Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2015	Jul. 31, 2014	Apr. 30, 2014
Balance Sheet Related Disclosures [Abstract]
Land and land improvements	$ 413,775mtn_LandAndLandImprovementsGross	$ 348,328mtn_LandAndLandImprovementsGross	$ 350,674mtn_LandAndLandImprovementsGross
Buildings and building improvements	957,594us-gaap_BuildingsAndImprovementsGross	907,280us-gaap_BuildingsAndImprovementsGross	908,829us-gaap_BuildingsAndImprovementsGross
Machinery and equipment	777,011us-gaap_MachineryAndEquipmentGross	700,745us-gaap_MachineryAndEquipmentGross	701,825us-gaap_MachineryAndEquipmentGross
Furniture and fixtures	284,403us-gaap_FurnitureAndFixturesGross	269,209us-gaap_FurnitureAndFixturesGross	273,202us-gaap_FurnitureAndFixturesGross
Software	105,482us-gaap_CapitalizedComputerSoftwareGross	98,653us-gaap_CapitalizedComputerSoftwareGross	99,958us-gaap_CapitalizedComputerSoftwareGross
Vehicles	59,708mtn_VehiclesGross	55,724mtn_VehiclesGross	55,324mtn_VehiclesGross
Construction in progress	20,245us-gaap_ConstructionInProgressGross	31,487us-gaap_ConstructionInProgressGross	19,453us-gaap_ConstructionInProgressGross
Gross property, plant and equipment	2,618,218us-gaap_PropertyPlantAndEquipmentGross	2,411,426us-gaap_PropertyPlantAndEquipmentGross	2,409,265us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation	(1,359,125)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	(1,263,436)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	(1,244,878)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property, plant and equipment, net	$ 1,259,093us-gaap_PropertyPlantAndEquipmentNet	$ 1,147,990us-gaap_PropertyPlantAndEquipmentNet	$ 1,164,387us-gaap_PropertyPlantAndEquipmentNet

X

- Definition

Gross amount, as of the balance sheet date, of real estate held for productive use. This excludes land held for sale and alterations to land which improves its potential for use. Generally consisting of items having limited lives, such as walkways, driveways, fences, and parking lots, such improvements are depreciated over the useful lives of the subject assets.

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Gross amount, as of the balance sheet date, of long-lived, depreciable assets that include automobiles and trucks.

+ References

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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