Segment Information (Financial Information By Geographic Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 30, 2013		Apr. 30, 2012		Jan. 31, 2013
Segment Reporting Information [Line Items]
Net sales	$ 6,147,757		$ 5,910,063	[1]
Operating Income (Loss)	36,031		82,458
Stock-based compensation expense	(3,091)		(2,941)	[1]
Depreciation and amortization	17,967		13,397	[1]
Capital expenditures	7,734		14,258
Identifiable assets	6,110,101				6,830,960
Long-lived assets	81,081				84,395
Goodwill and acquisition-related intangible assets, net	395,637				412,500
Americas
Segment Reporting Information [Line Items]
Net sales	2,292,782	[2]	2,457,488	[2]
Operating Income (Loss)	27,231		49,778
Depreciation and amortization	4,246		3,782
Capital expenditures	1,697		9,761
Identifiable assets	1,787,264				2,004,295
Long-lived assets	29,026	[2]			30,492	[2]
Goodwill and acquisition-related intangible assets, net	2,966				2,966
Sales to unaffiliated customers, as percentage of total sales	83.00%		82.00%
Long-lived assets, as percentage of total assets	90.00%				90.00%
Europe
Segment Reporting Information [Line Items]
Net sales	3,854,975		3,452,575
Operating Income (Loss)	11,891		35,621
Depreciation and amortization	13,721		9,615
Capital expenditures	6,037		4,497
Identifiable assets	4,322,837				4,826,665
Long-lived assets	52,055				53,903
Goodwill and acquisition-related intangible assets, net	$ 392,671				$ 409,534

[1] (1) See Note 2 - Restatement of Consolidated Financial Statements.

[2] Net sales to unaffiliated customers in the United States represented 83% and 82%, respectively, of the total Americas' net sales to unaffiliated customers for the fiscal quarters ended April 30, 2013 and April 30, 2012. Total long-lived assets in the United States represented 90% of the Americas' total long-lived assets at both April 30, 2013 and January 31, 2013.