v2.4.0.8
Net Earnings Per Share (Basic And Dilutive Net Earnings Per Share Reconciliations) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Aug. 31, 2013
Aug. 31, 2012
Aug. 31, 2013
Aug. 31, 2012
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]        
Net earnings $ 140,274 $ 111,636 $ 286,925 $ 232,382
Weighted average common shares outstanding 223,610 228,366 224,114 228,069
Weighted average common shares and dilutive potential common shares 227,634 231,696 228,093 231,749
Basic net earnings per share $ 0.63 $ 0.49 $ 1.28 $ 1.02
Diluted net earnings per share $ 0.62 $ 0.48 $ 1.26 $ 1.00
Stock Options [Member]
       
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]        
Dilutive potential common shares 3,319 2,958 3,257 3,196
Stock-Settled Restricted Stock Units [Member]
       
Schedule of Basic and Dilutive Net Earnings Per Share Reconciliation [Line Items]        
Dilutive potential common shares 705 372 722 484