Summary of Significant Accounting Policies Summary Of Property, Plant and Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Jan. 31, 2014
Property, Plant and Equipment
Computer equipment and furniture	$ 334,817ment_ComputerEquipmentAndFurnitureGross	$ 319,698ment_ComputerEquipmentAndFurnitureGross
Buildings and building equipment	110,854us-gaap_BuildingsAndImprovementsGross	101,073us-gaap_BuildingsAndImprovementsGross
Land and improvements	21,650us-gaap_Land	21,321us-gaap_Land
Leasehold Improvements	38,035us-gaap_LeaseholdImprovementsGross	38,900us-gaap_LeaseholdImprovementsGross
Property, plant, and equipment, gross	505,356us-gaap_PropertyPlantAndEquipmentGross	480,992us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation and amortization	(334,619)	(320,827)
Property, plant, and equipment, net	$ 170,737us-gaap_PropertyPlantAndEquipmentNet	$ 160,165us-gaap_PropertyPlantAndEquipmentNet

Computer equipment and furniture.

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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 depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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

+ References

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