Balance Sheet Details (Property And Equipment, Net Schedule) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,279	$ 1,219
Less accumulated depreciation	(731)	(651)
Property and equipment, net	548	568
Computer Equipment And Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	660	575
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	336	339
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	129	121
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	72	72
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	64	64
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	10	10
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 8	$ 38

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References+ Details

Gross amount of long-lived 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, furniture and fixtures, and computer equipment.

+ References+ Details

- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived 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, furniture and fixtures, and computer equipment.

+ References+ Details