Summary of Identifiable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	May 31, 2014	Feb. 28, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 309,131	$ 294,306
Accumulated Amortization	(167,805)	(160,907)
Net Amount	141,326	133,399	[1]
Trademarks, Copyrights and Patents
Finite-Lived Intangible Assets [Line Items]
Gross Amount	107,849	105,269
Accumulated Amortization	(36,692)	(34,784)
Net Amount	71,157	70,485
Purchased Technologies
Finite-Lived Intangible Assets [Line Items]
Gross Amount	80,906	79,433
Accumulated Amortization	(58,310)	(55,960)
Net Amount	22,596	23,473
Customer and Reseller Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount	96,987	89,992
Accumulated Amortization	(64,848)	(63,075)
Net Amount	32,139	26,917
Covenants Not To Compete
Finite-Lived Intangible Assets [Line Items]
Gross Amount	14,469	10,690
Accumulated Amortization	(6,501)	(5,977)
Net Amount	7,968	4,713
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Gross Amount	8,920	8,922
Accumulated Amortization	(1,454)	(1,111)
Net Amount	$ 7,466	$ 7,811

[1] Derived from audited financial statements.