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Non-controlling Interest in VMware, Inc. - Additional Information (Detail) (USD $)
Dec. 31, 2011
Dec. 31, 2010
Noncontrolling Interest [Line Items]    
Non-controlling interest in VMware, Inc. $ 968,089,000 $ 762,736,000
Voting power of VMware's outstanding common stock 97.00%  
Percentage of economic interest in VMware 80.00% 80.00%