Derivative Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Jan. 31, 2013
Fair value of derivatives in a gain position [Member] | Currency derivatives [Member] | Cash Flow Hedging [Member] | Other Current Assets [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	$ 1.9
Fair value of derivatives in a gain position [Member] | Currency derivatives [Member] | Cash Flow Hedging [Member] | Other Assets [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	0.4
Fair value of derivatives in a gain position [Member] | Currency derivatives [Member] | Cash Flow Hedging [Member] | Accrued Expenses [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	3.4
Fair value of derivatives in a gain position [Member] | Currency derivatives [Member] | Cash Flow Hedging [Member] | Other Liabilities [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	0.9
Fair value of derivatives in a gain position [Member] | Currency derivatives [Member] | Not designated as hedges [Member] | Other Current Assets [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	0.4
Fair value of derivatives in a gain position [Member] | Currency derivatives [Member] | Not designated as hedges [Member] | Accrued Expenses [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	0.4
Fair value of derivatives in a gain position [Member] | Interest rate swaps [Member] | Fair Value Hedging [Member] | Other Current Assets [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	1.8
Fair value of derivatives in a loss position [Member] | Currency derivatives [Member] | Cash Flow Hedging [Member] | Other Current Assets [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	(0.4)
Fair value of derivatives in a loss position [Member] | Currency derivatives [Member] | Cash Flow Hedging [Member] | Other Assets [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	(0.3)
Fair value of derivatives in a loss position [Member] | Currency derivatives [Member] | Cash Flow Hedging [Member] | Accrued Expenses [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	(13.9)
Fair value of derivatives in a loss position [Member] | Currency derivatives [Member] | Cash Flow Hedging [Member] | Other Liabilities [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	(3.8)
Fair value of derivatives in a loss position [Member] | Currency derivatives [Member] | Not designated as hedges [Member] | Other Current Assets [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	0
Fair value of derivatives in a loss position [Member] | Currency derivatives [Member] | Not designated as hedges [Member] | Accrued Expenses [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	(0.2)
Fair value of derivatives in a loss position [Member] | Interest rate swaps [Member] | Fair Value Hedging [Member] | Other Current Assets [Member]
Fair values of derivative instruments
Fair value of derivatives in a gain (loss) position	$ 0