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Comprehensive Income (Loss) (Details) (USD $)	Aug. 31, 2012	Feb. 29, 2012
Unrealized holding losses on cash flow hedges, net of tax	$ (4,747,000)	$ (5,589,000)
Interest rate swaps
Unrealized holding losses on cash flow hedges, net of tax	(4,647,000)	(5,559,000)
Deferred tax benefits included in accumulated other comprehensive loss	2,500,000	2,990,000
Foreign currency swaps and contracts
Unrealized holding losses on cash flow hedges, net of tax	(100,000)	(30,000)
Deferred tax benefits included in accumulated other comprehensive loss	$ 50,000	$ 20,000

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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