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FAIR VALUE (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 29, 2012	Feb. 28, 2011
Accumulated other comprehensive income
Cumulative unrealized losses relating to assets still held at each reporting date, net of taxes		$ (884)
ARS
Fair value measurement on recurring basis using significant unobservable inputs (Level 3)
Beginning balances	20,711	20,534
Total gains (losses):
Included in net income - realized	(626)
Included in other comprehensive income - unrealized	1,213	527
Sales at par	(3,250)	(350)
Sales at fair value	(18,048)
Ending balances		20,711
Accumulated other comprehensive income
Cumulative unrealized losses relating to assets still held at each reporting date, net of taxes		(884)
Other Non-financial Assets
Fair value measurement on non-recurring basis using significant unobservable inputs (Level 3)
Beginning balances	660,947	363,061
Total gains (losses):
Included in net income - realized	(20,069)	(11,858)
Acquired during the period	178,676	309,984
Acquisition adjustments during the period	9,946	(240)
Ending balances	$ 829,500	$ 660,947

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Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

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