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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-Publisher FASB

-Name Accounting Standards Codification

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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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.

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Property and equipment, net (Details) ¥ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2015 CNY (¥)	Mar. 31, 2014 CNY (¥)	Mar. 31, 2013 CNY (¥)	Mar. 31, 2015 USD ($)	Mar. 31, 2015 CNY (¥)
Property and Equipment, Net
Gross		¥ 9,161			¥ 14,905
Less: accumulated depreciation and amortization		(3,580)			(5,766)
Net book value		5,581		$ 1,474	9,139
Depreciation and Amortization
Depreciation and amortization expenses	¥ 2,282	1,295	¥ 764
Computer equipment and software
Property and Equipment, Net
Gross		5,675			9,829
Buildings and leasehold improvements
Property and Equipment, Net
Gross		2,434			2,828
Construction in progress
Property and Equipment, Net
Gross		780			1,818
Furniture, office and transportation equipment
Property and Equipment, Net
Gross		¥ 272			¥ 430