Fair Value Measurements (Tables)

12 Months Ended

Feb. 28, 2014

Fair Value Measurements [Abstract]

Schedule Of Items Measured At Fair Value On A Recurring Basis

	As of February 28, 2014
(In thousands)	Level 1			Level 2			Total
Assets:
Money market securities	$	641,622		$	―		$	641,622
Mutual fund investments		5,609			―			5,609
Total assets at fair value	$	647,231		$	―		$	647,231
Percent of total assets at fair value		100.0	%		―	%		100.0	%
Percent of total assets		5.5	%		―	%		5.5	%
Liabilities:
Derivative instruments	$	―		$	1,351		$	1,351
Total liabilities at fair value	$	―		$	1,351		$	1,351
Percent of total liabilities		―	%		―	%		―	%

	As of February 28, 2013
(In thousands)	Level 1			Level 2			Total
Assets:
Money market securities	$	461,260		$	―		$	461,260
Mutual fund investments		4,024			―			4,024
Total assets at fair value	$	465,284		$	―		$	465,284
Percent of total assets at fair value		100.0	%		―	%		100.0	%
Percent of total assets		4.7	%		―	%		4.7	%
Liabilities:
Derivative instruments	$	―		$	517		$	517
Total liabilities at fair value	$	―		$	517		$	517
Percent of total liabilities		―	%		―	%		―	%