Schedule II Valuation And Qualifying Accounts (Details) (Allowance for Doubtful Accounts Receivable and Sales Returns, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2013		Jan. 31, 2012		Jan. 31, 2011
Allowance for Doubtful Accounts Receivable and Sales Returns
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 56,753		$ 60,584		$ 58,119
Charged to cost and expenses	9,653		10,813		11,798
Deductions	(24,425)		(30,772)		(20,970)
Other	16,303	[1]	16,128	[1]	11,637	[1]
Balance at end of period	$ 58,284		$ 56,753		$ 60,584

[1] (1)“Other” primarily includes recoveries, acquisitions and dispositions and the effect of fluctuations in foreign currencies.