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Derivative Financial Instruments (Details 2) - Cash flow hedges - USD ($) $ in Millions	9 Months Ended
	Oct. 31, 2015	Jan. 31, 2015
Europe
Forward contracts designated as hedging instruments
U.S. dollar forward contracts purchased, total notional amount	$ 110.6
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months)	18 months
Canada
Forward contracts designated as hedging instruments
U.S. dollar forward contracts purchased, total notional amount	$ 70.6
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months)	18 months
Foreign exchange currency contracts | Europe
Forward contracts designated as hedging instruments
U.S. dollar forward contracts outstanding	$ 107.4	$ 50.8
Foreign exchange currency contracts | Canada
Forward contracts designated as hedging instruments
U.S. dollar forward contracts outstanding	$ 55.6	$ 24.5

X

- Definition

The total notional amount of foreign exchange forward contracts purchased during the period. Expressed as an absolute value.

+ References

No definition available.

+ Details

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Article 12



-Section 13



-Sentence Column B

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Details

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- Details

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- Details

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