Consolidated Statement Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2018	Apr. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 33,699	$ 30,654
Other comprehensive (loss) income:
Foreign currency translation adjustment	(88,252)	33,663
Total comprehensive (loss) income	$ (54,553)	$ 64,317

Other comprehensive income [Abstract]

No definition available.

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- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
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- Definition

Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 20
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- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- References

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