Summary of Revenue, Income (Loss) from Operations, Total Assets and Total Cash, Cash Equivalents and Available-for-Sale Investment Securities by Geographic Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 31, 2014		May 31, 2013		Feb. 28, 2014
Segment Reporting Information [Line Items]
Revenue	$ 423,754		$ 363,259
Income (loss) from operations	50,963		56,623
Cash, cash equivalents and available-for-sale investment securities	1,400,082		1,228,288
Total assets	3,070,010		2,654,933		3,106,619	[1]
Americas
Segment Reporting Information [Line Items]
Revenue	266,093		233,426
Income (loss) from operations	41,392		47,006
Cash, cash equivalents and available-for-sale investment securities	640,167		668,269
Total assets	2,072,512		1,905,108
EMEA
Segment Reporting Information [Line Items]
Revenue	100,774		80,050
Income (loss) from operations	24,185		20,506
Cash, cash equivalents and available-for-sale investment securities	578,924		400,712
Total assets	719,090		539,259
Asia Pacific
Segment Reporting Information [Line Items]
Revenue	56,887		49,783
Income (loss) from operations	14,100		12,242
Cash, cash equivalents and available-for-sale investment securities	180,991		159,307
Total assets	278,408		210,566
Corporate
Segment Reporting Information [Line Items]
Income (loss) from operations	$ (28,714)	[2]	$ (23,131)	[2]

[1] Derived from audited financial statements.

[2] Amounts represent share-based compensation expense for each of the three months ended May 31, 2014 and May 31, 2013, which was not allocated to geographic segments.