Derivative Instruments And Hedging Activities (Schedule Of Effect Of Derivative Instruments On The Consolidated Statements Of Earnings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Nov. 30, 2013		Nov. 30, 2012		Nov. 30, 2013		Nov. 30, 2012
Designated As Hedging Instrument [Member]
Derivative [Line Items]
Loss recognized in AOCL	$ (7,421)	[1]	$ (894)	[1]	$ (4,069)	[1]	$ (7,286)	[1]
Loss reclassified from AOCL into CAF Income	(2,155)	[1]	(3,327)	[1]	(7,665)	[1]	(9,855)	[1]
Gain recognized in CAF income	0	[2]	0	[2]	78	[2]	0	[2]
Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Loss recognized in CAF income	$ 0	[3]	$ (1)	[3]	$ 0	[3]	$ (2)	[3]

[1] (1)Represents the effective portion.

[2] Represents the ineffective portion.

[3] Represents the loss on interest rate swaps, the net periodic settlements and accrued interest.