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Pension Plan (Details 4)	12 Months Ended
Pension Plan (Details 4)	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011
Schedule of assumptions used to determine benefit obligations and net periodic pension cost
Weighted average discount rate (net periodic pension cost)	5.05%	5.85%	6.05%
Earnings progression (net periodic pension cost)	3.00%	3.00%	3.00%
Expected long-term rate of return on plan assets	8.00%	8.00%	8.00%
Weighted average discount rate (benefit obligations)	4.60%	5.05%	5.85%
Earnings progression (benefit obligations)	3.00%	3.00%	3.00%

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

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