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Property and Equipment, Net (Summary of Property and Equipment) (Detail) - USD ($) $ in Thousands	Jan. 31, 2019	Jan. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,197,144	$ 855,587
Less accumulated depreciation and amortization	(400,237)	(308,978)
Property and equipment, net	796,907	546,609
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	22,694	8,451
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	433,863	255,093
Computers, equipment, and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	539,090	425,025
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	38,840	34,809
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	162,657	132,209
Construction in Progress for owned real estate projects
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 355,000	$ 177,000

X

- Definition

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, 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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