Goodwill And Intangible Assets (Schedule Of Estimated Amortization Expense) (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2013
Finite-Lived Intangible Assets [Line Items]
2014	$ 50,800
2015	45,600
2016	36,900
2017	32,400
2018	27,600
Capitalized software and development costs
Finite-Lived Intangible Assets [Line Items]
2014	21,000
2015	16,200
2016	10,900
2017	8,200
2018	6,200
Acquired intangible assets
Finite-Lived Intangible Assets [Line Items]
2014	29,800
2015	29,400
2016	26,000
2017	24,200
2018	$ 21,400

Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275

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Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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