Goodwill And Intangible Assets (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Goodwill
Balance as of January 31, 2018		$ 969,168
Acquisitions		6,239
Dispositions		(2,301)
Goodwill Impairment	$ (47,434)	(47,434)	$ 0	$ 0
Foreign currency translation and other		(32,682)
Balance as of January 31, 2019	892,990	892,990	969,168
Americas
Goodwill
Balance as of January 31, 2018		488,775
Acquisitions		0
Dispositions		0
Goodwill Impairment		0
Foreign currency translation and other		(267)
Balance as of January 31, 2019	488,508	488,508	488,775
Europe
Goodwill
Balance as of January 31, 2018		395,363
Acquisitions		6,239
Dispositions		(2,301)
Goodwill Impairment		0
Foreign currency translation and other		(18,030)
Balance as of January 31, 2019	381,271	381,271	395,363
Asia Pacific [Member]
Goodwill
Balance as of January 31, 2018		85,030
Acquisitions		0
Dispositions		0
Goodwill Impairment	(47,434)	(47,434)
Foreign currency translation and other		(14,385)
Balance as of January 31, 2019	$ 23,211	$ 23,211	$ 85,030