Inventories (Tables)

12 Months Ended

Jan. 31, 2014

Inventory Disclosure [Abstract]

Components of Inventories

	January 31,
(in thousands)	2014		2013
Finished goods	$	1,333,926	$	1,291,235
Raw materials	874,799		790,732
Work-in-process	117,855		152,367
Inventories, net	$	2,326,580	$	2,234,334