[Line Items] for Income Taxes [Table]

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- Definition

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)(3)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319

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- Definition

Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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-Paragraph 15
-Subparagraph (e)
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- Definition

Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319

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- Definition

Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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-Publisher FASB
-Name Accounting Standards Codification
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Income Taxes Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Income Taxes
Undistributed earnings of foreign subsidiaries	$ 478,660
Unrecognized tax benefits, income tax penalties and interest expense	950	$ 1,717	$ 884
Income tax penalties and interest accrued	10,160	$ 9,817
Unrecognized tax benefits that would impact effective tax rate	$ 28,939
Earliest Tax Year \| Domestic Tax Authority
Income Taxes
Open tax year	2014
Earliest Tax Year \| Japan
Income Taxes
Open tax year	2012
Earliest Tax Year \| Israel
Income Taxes
Open tax year	2012
Earliest Tax Year \| Ireland
Income Taxes
Open tax year	2013
Earliest Tax Year \| India
Income Taxes
Open tax year	2009
Earliest Tax Year \| France
Income Taxes
Open tax year	2014
Latest Tax Year \| Domestic Tax Authority
Income Taxes
Open tax year	2017
Latest Tax Year \| Japan
Income Taxes
Open tax year	2017
Latest Tax Year \| Israel
Income Taxes
Open tax year	2017
Latest Tax Year \| Ireland
Income Taxes
Open tax year	2017
Latest Tax Year \| India
Income Taxes
Open tax year	2017
Latest Tax Year \| France
Income Taxes
Open tax year	2017
Minimum
Income Taxes
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 0
Maximum
Income Taxes
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 2,000