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Non-controlling Interest in VMware, Inc. - Additional Information (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Noncontrolling Interest [Abstract]    
Non-controlling interest in VMware, Inc. $ 1,166,648 $ 968,089
Voting power of VMware's outstanding common stock 97.00%  
Percentage of ownership interest in VMware, Inc. 80.00% 80.00%