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Acquisitions (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Feb. 01, 2013
Feb. 03, 2012
Jan. 28, 2011
Business Acquisition      
Estimated Cost $ 2,062    
Weighted Average Useful Life 6 years 1 month 6 days    
In-process research and development 108    
Total intangible assets 2,170 753 141
Cash and investments 407    
Accounts receivable 176    
Goodwill 3,487 1,500 284
Deferred revenue (417)    
Deferred tax liability, net (571)    
Other liabilities and noncontrolling interest assumed, net of assets acquired (213)    
Total 5,039    
Customer relationships
     
Business Acquisition      
Estimated Cost 687    
Weighted Average Useful Life 6 years 10 months 24 days    
Technology
     
Business Acquisition      
Estimated Cost 1,293    
Weighted Average Useful Life 5 years 7 months 6 days    
Non-compete agreements
     
Business Acquisition      
Estimated Cost 5    
Weighted Average Useful Life 4 years 4 months 24 days    
Trade names
     
Business Acquisition      
Estimated Cost $ 77    
Weighted Average Useful Life 6 years 7 months 6 days