Segment Information (Financial Information By Geographic Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended										12 Months Ended
	Jan. 31, 2013		Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012		Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2013		Jan. 31, 2012		Jan. 31, 2011
Segment Reporting Information [Line Items]
Net sales	$ 7,442,372	[1],[2]	$ 6,037,475	$ 5,968,419	$ 5,910,063	$ 6,874,391	[3]	$ 6,404,585	$ 6,214,304	$ 6,154,033	$ 25,358,329		$ 25,647,313	[4]	$ 23,619,938	[4]
Stock-based compensation expense											(13,616)		(11,994)	[4]	(10,353)	[4]
Operating income	57,356	[1],[2]	63,595	60,311	82,458	70,604		83,252	73,138	77,552	263,720		304,546	[4]	321,408	[4]
Depreciation and amortization											58,353		57,332	[4]	47,285	[4]
Capital expenditures											38,365		44,559		30,800
Identifiable assets	6,830,960		5,896,457	5,329,270	5,660,297	5,796,268	[4]	6,372,222	6,199,574	6,550,939	6,830,960		5,796,268	[4]
Long-lived assets	84,395		83,373	82,770	89,093	88,881	[4]	88,178	91,330	96,045	84,395		88,881	[4]
Goodwill and acquisition-related intangible assets, net	412,500					152,893					412,500		152,893
Loss on disposal of subsidiaries						28,294		0	0	0	0		28,294	[4]	0	[4]
Value added tax assessment	29,462		0	0	0						29,462		0	[4]	0	[4]
Americas
Segment Reporting Information [Line Items]
Net sales											9,823,515	[5]	10,405,428	[5]	10,096,732	[5]
Operating income											150,055	[6]	173,978	[6]	178,043	[6]
Depreciation and amortization											16,210		16,338		16,200
Capital expenditures											19,842		29,240		17,216
Identifiable assets	2,004,295	[5]				1,892,256	[5]				2,004,295	[5]	1,892,256	[5]
Long-lived assets	30,492					33,103					30,492		33,103
Goodwill and acquisition-related intangible assets, net	2,966					2,966					2,966		2,966
Loss on disposal of subsidiaries						28,300
Americas | Geographic Concentration Risk | UNITED STATES | Sales Revenue, Segment
Segment Reporting Information [Line Items]
Concentration risk, percentage											85.00%		83.00%		82.00%
Americas | Geographic Concentration Risk | UNITED STATES | Assets, Total
Segment Reporting Information [Line Items]
Concentration risk, percentage											78.00%		78.00%
Europe
Segment Reporting Information [Line Items]
Net sales											15,534,814		15,241,885		13,523,206
Operating income											127,281	[7]	142,562	[7]	153,718	[7]
Depreciation and amortization											42,143		40,994		31,085
Capital expenditures											18,523		15,319		13,584
Identifiable assets	4,826,665					3,904,012					4,826,665		3,904,012
Long-lived assets	53,903					55,778					53,903		55,778
Goodwill and acquisition-related intangible assets, net	409,534	[8]				149,927	[8]				409,534	[8]	149,927	[8]
Value added tax assessment											$ 29,500

[1] During the fourth quarter of fiscal 2013, the Company recorded a $41.0 million increase in an accrual for various value added tax matters in one of the Company’s subsidiaries in Spain, which decreased earnings per diluted share by $0.89 for the quarter ended January 31, 2013 (see Note 14 - Commitments and Contingencies for further discussion).

[2] During the fourth quarter of fiscal 2013, the Company recorded an income tax benefit of $25.1 million for the reversal of deferred tax valuation allowances related to a specific jurisdiction in Europe which had been recorded in prior fiscal years, which increased earnings per diluted share by $0.66 for the quarter ended January 31, 2013 (see further discussion in Note 9 - Income Taxes).

[3] During the fourth quarter of fiscal 2012, the Company recorded a $28.3 million loss on disposal of subsidiaries related to the closure of the commercial operations in Brazil and Colombia, which decreased earnings per diluted share by $0.46 for the quarter ended January 31, 2012 (see also Note 7 - Loss on Disposal of Subsidiaries).

[4] See Note 2 - Restatement of Consolidated Financial Statements.

[5] Net sales to unaffiliated customers in the United States represented 85%, 83% and 82%, respectively, of the total Americas' net sales to unaffiliated customers for the fiscal years ended January 31, 2013, 2012 and 2011, respectively. Total assets excluding goodwill, intangible assets and investments in subsidiaries in the United States represented 78% of the Americas total assets at both January 31, 2013 and 2012.

[6] During fiscal 2012, the Company incurred a $28.3 million loss on disposal of subsidiaries related to the closure of the operations in Brazil and Colombia (see further discussion in Note 7 - Loss on Disposal of Subsidiaries).

[7] Operating income in Europe for the fiscal year ended January 31, 2013 includes a value added tax assessment of $29.5 million in relation to an assessment and penalties for various value added tax matters in one of the Company’s subsidiaries in Spain (see further discussion in Note 14 - Commitments and Contingencies).

[8] During fiscal 2013, the Company completed the acquisition of SDG (see further discussion in Note 5 - Goodwill and Intangible Assets and Note 6 - Acquisitions).