Earnings Per Share (Tables)

6 Months Ended

Jul. 31, 2014

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

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)	2014		2013		2014		2013
Net earnings for basic and diluted EPS	$	124,120	$	106,781	$	249,729	$	190,358
Weighted-average shares for basic EPS	129,252		127,826		129,093		127,572
Incremental shares based upon the assumed exercise of stock options and unvested restricted stock units	656		945		758		1,034
Weighted-average shares for diluted EPS	129,908		128,771		129,851		128,606