Earnings Per Share

6 Months Ended

Jul. 31, 2013

Earnings Per Share [Abstract]

Earnings Per Share

EARNINGS PER SHARE

Basic earnings per share (“EPS”) is computed as net earnings divided by the weighted-average number of common shares outstanding for the period. Diluted EPS includes the dilutive effect of the assumed exercise of stock options and unvested restricted stock units.

The following table summarizes the reconciliation of the numerators and denominators for the basic and diluted EPS computations:

	Three Months Ended July 31,				Six Months Ended July 31,
(in thousands)	2013		2012		2013		2012
Net earnings for basic and diluted EPS	$	106,781	$	91,801	$	190,358	$	173,335
Weighted-average shares for basic EPS	127,826		126,631		127,572		126,677
Incremental shares based upon the assumed exercise of    stock options and unvested restricted stock units	945		1,032		1,034		1,243
Weighted-average shares for diluted EPS	128,771		127,663		128,606		127,920

For the three months ended July 31, 2013 and 2012, there were 412,000 and 1,026,000 stock options and restricted stock units excluded from the computations of earnings per diluted share due to their antidilutive effect. For the six months ended July 31, 2013 and 2012, there were 589,000 and 886,000 stock options and restricted stock units excluded from the computations of earnings per diluted share due to their antidilutive effect.