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Goodwill and Purchased and Other Intangibles (Details 1) (USD $)
In Thousands, unless otherwise specified
May 31, 2013
Purchased technology [Member]
 
Amortization Expense in Future Periods [Abstract]  
Remainder of 2013 $ 35,578
2014 66,544
2015 51,819
2016 13,136
2017 6,736
Thereafter 3,430
Total expected amortization expense 177,243
Other intangible assets [Member]
 
Amortization Expense in Future Periods [Abstract]  
Remainder of 2013 39,362
2014 67,134
2015 61,229
2016 55,605
2017 47,170
Thereafter 103,522
Total expected amortization expense $ 374,022