Goodwill and Purchased and Other Intangibles (Details 1) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2014
Purchased technology [Member]
Amortization Expense in Future Periods [Abstract]
Remainder of 2014	$ 56,202
2015	61,572
2016	22,999
2017	15,541
2018	9,144
Thereafter	20,105
Total expected amortization expense	185,563
Other intangible assets [Member]
Amortization Expense in Future Periods [Abstract]
Remainder of 2014	56,297
2015	68,180
2016	62,234
2017	52,932
2018	41,868
Thereafter	103,097
Total expected amortization expense	$ 384,608