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Balance Sheet Details (Property And Equipment, Net Schedule) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Mar. 31, 2011
Balance Sheet Details [Abstract]    
Computer equipment and software $ 553 $ 504
Buildings 333 355
Leasehold improvements 113 105
Office equipment, furniture and fixtures 69 67
Land 63 66
Construction in progress 35 20
Warehouse equipment and other 10 10
Property, plant and equipment, gross 1,176 1,127
Less: accumulated depreciation (629) (614)
Property and equipment, net $ 547 $ 513 [1]
[1] Derived from audited consolidated financial statements.