Schedule II Valuation And Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2012		Jan. 31, 2011		Jan. 31, 2010
Valuation And Qualifying Accounts [Abstract]
Balance at beginning of period	$ 56,811		$ 54,627		$ 55,598
Charged to cost and expenses	10,546		11,517		10,953
Deductions	(30,772)		(20,970)		(38,564)
Other	16,128	[1]	11,637	[1]	26,640	[1]
Balance at end of period	$ 52,713		$ 56,811		$ 54,627

[1] "Other" primarily includes recoveries, dispositions and the effect of fluctuations in foreign currency.