XML 46 R34.htm IDEA: XBRL DOCUMENT v2.4.0.8
Reconciliation of Weighted Average Shares Outstanding Used for Computation of Basic and Diluted Net Income Per Common Share (Detail)
3 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Earnings Per Share [Line Items]    
Basic weighted-average common shares outstanding 144,075,666 146,289,751
Effect of dilutive options, stock appreciation rights, performance stock units and restricted stock units 1,830,878 2,509,305
Diluted weighted-average shares outstanding 145,906,544 148,799,056