Share-based Awards - Share-Based Compensation Expense (Detail) - USD ($) $ in Thousands		3 Months Ended
		May 31, 2019	May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense	[1]	$ 50,168	$ 46,005
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense		4,945	5,128
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense		21,904	19,520
Research and development
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense		16,002	14,782
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense		7,317	6,575
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total share-based compensation expense		$ 1,700	$ 4,000

[1] Total share-based compensation expense included $1.7 million and $4.0 million, respectively, of expense related to the Company’s employee stock purchase plan (“ESPP”) for the three months ended May 31, 2019 and May 31, 2018.