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Acquisitions - Narrative (Details)
9 Months Ended
Oct. 28, 2012
Gennum [Member]
USD ($)
Mar. 20, 2012
Gennum [Member]
USD ($)
Mar. 20, 2012
Gennum [Member]
CAD
Mar. 07, 2012
Cycleo [Member]
USD ($)
Percentage of outstanding shares acquired   100.00% 100.00%  
Price paid per share     13.55  
Total acquisition consideration   $ 506,546,000    
Long-term debt   347,000,000    
Original issue discount on debt   3,000,000    
Change in control payment 9,600,000      
Cash paid for acquisition       5,000,000
Deferred compensation potential cash payment       $ 16,000,000