Goodwill And Intangible Assets (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 31, 2015
Goodwill [Roll Forward]
Balance as of February 1, 2014	$ 230,472us-gaap_Goodwill
Goodwill acquired during the year	554us-gaap_GoodwillAcquiredDuringPeriod
Foreign currency translation adjustment	(32,461)us-gaap_GoodwillTranslationAdjustments
Balance as of January 31, 2015	198,565us-gaap_Goodwill
Americas
Goodwill [Roll Forward]
Balance as of February 1, 2014	4,888
Goodwill acquired during the year	554
Foreign currency translation adjustment	0
Balance as of January 31, 2015	5,442
Europe
Goodwill [Roll Forward]
Balance as of February 1, 2014	225,584
Goodwill acquired during the year	0
Foreign currency translation adjustment	(32,461)
Balance as of January 31, 2015	$ 193,123

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Section 45

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Section 50

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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