Earnings Per Share (Tables)

3 Months Ended

Apr. 30, 2013

Earnings Per Share [Abstract]

Reconciliation of Numerators and Denominators for Basic and Diluted EPS Computations

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

	Three Months Ended April 30,
(in thousands)	2013		2012
Net earnings for basic and diluted EPS	$	83,577	$	81,534
Weighted-average shares for basic EPS		127,318		126,723
Incremental shares based upon the assumed exercise of stock options and unvested restricted stock units		1,123		1,455
Weighted-average shares for diluted EPS		128,441		128,178