Consolidated Condensed Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
May 31, 2012	May 31, 2011
Net income	$ 27,859	$ 27,368
Auction rate security activity, before tax
Changes in fair market value		42
Settlements reclassified to income		(120)
Subtotal		(78)
Total other comprehensive income, before tax	1,731	(1,274)
Comprehensive income, before tax	29,590	26,094
Net income, tax	(4,387)	(2,763)
Auction rate security activity, tax
Changes in fair market value		(22)
Settlements reclassified to income		63
Subtotal		41
Total other comprehensive income, tax	(606)	547
Comprehensive income, tax	(4,993)	(2,216)
Net income	23,472	24,605
Auction rate security activity, net of tax
Changes in fair market value		20
Settlements reclassified to income		(57)
Subtotal		(37)
Total other comprehensive income, net of tax	1,125	(727)
Comprehensive income, net of tax	24,597	23,878
Interest rate swaps
Cash flow hedge activity, before tax
Changes in fair market value	(44)	(2,442)
Settlements reclassified to income	926	1,526
Subtotal	882	(916)
Cash flow hedge activity, tax
Changes in fair market value	15	1,111
Settlements reclassified to income	(324)	(695)
Subtotal	(309)	416
Cash flow hedge activity, net of tax
Changes in fair market value	(29)	(1,331)
Settlements reclassified to income	602	831
Subtotal	573	(500)
Foreign currency contracts
Cash flow hedge activity, before tax
Changes in fair market value	910	(487)
Ineffectiveness recorded in income	(35)	63
Settlements reclassified to income	(26)	144
Subtotal	849	(280)
Cash flow hedge activity, tax
Changes in fair market value	(318)	156
Ineffectiveness recorded in income	12	(20)
Settlements reclassified to income	9	(46)
Subtotal	(297)	90
Cash flow hedge activity, net of tax
Changes in fair market value	592	(331)
Ineffectiveness recorded in income	(23)	43
Settlements reclassified to income	(17)	98
Subtotal	$ 552	$ (190)

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