Consolidated Statements Of Comprehensive Income (USD $)
In Thousands, unless otherwise specified
3 Months Ended
May 31, 2014
May 31, 2013
Consolidated Statements Of Comprehensive Income [Abstract]    
Net earnings $ 169,653 $ 146,651
Retirement plans:    
Net change in retirement benefit plan unrecognized actuarial losses 213 256
Cash flow hedges:    
Net change in cash flow hedge unrecognized losses 282 2,042
Other comprehensive income (loss), net of taxes 495 2,298
TOTAL COMPREHENSIVE INCOME $ 170,148 $ 148,949