Stock-Based Compensation (Details 5) - USD ($) $ in Thousands	3 Months Ended
	May. 29, 2015	May. 30, 2014
Option Grants and Stock Purchase Rights [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	$ 11,177	$ 11,268
Restricted Stock and Performance Share Awards [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	73,947	71,742
Cost of Subscription Revenue [Member] | Option Grants and Stock Purchase Rights [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	371	505
Cost of Subscription Revenue [Member] | Restricted Stock and Performance Share Awards [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	1,780	1,441
Cost of Service and Support Revenue [Member] | Option Grants and Stock Purchase Rights [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	1,404	964
Cost of Service and Support Revenue [Member] | Restricted Stock and Performance Share Awards [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	1,429	1,682
Research and Development Expense [Member] | Option Grants and Stock Purchase Rights [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	3,639	3,989
Research and Development Expense [Member] | Restricted Stock and Performance Share Awards [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	25,292	25,910
Sales and Marketing [Member] | Option Grants and Stock Purchase Rights [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	4,630	4,316
Sales and Marketing [Member] | Restricted Stock and Performance Share Awards [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	28,255	25,363
General and Administrative [Member] | Option Grants and Stock Purchase Rights [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	1,133	1,494
General and Administrative [Member] | Restricted Stock and Performance Share Awards [Member]
Total stock-based compensation costs [Abstract]
Stock-based compensation costs	$ 17,191	$ 17,346