Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Jan. 31, 2013
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Short-term borrowings	$ 10.6
Long-term debt	994.0
Currency derivatives [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Currency derivatives	13.3
Fair Value, Measurements, Recurring [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Short-term borrowings	10.6
Current portion of long-term debt	261.6
Long-term debt	994.0
Fair Value, Measurements, Recurring [Member] | Currency derivatives [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Currency derivatives	1.9
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Currency derivatives	13.3
Fair Value, Measurements, Recurring [Member] | Interest rate swaps [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Interest rate swaps	1.8
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Short-term borrowings	0
Current portion of long-term debt	0
Long-term debt	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Currency derivatives [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Currency derivatives	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Currency derivatives	0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Interest rate swaps [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Interest rate swaps	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Short-term borrowings	10.6
Current portion of long-term debt	261.6
Long-term debt	994.0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Currency derivatives [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Currency derivatives	1.9
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Currency derivatives	13.3
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Interest rate swaps [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Interest rate swaps	1.8
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Short-term borrowings	0
Current portion of long-term debt	0
Long-term debt	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Currency derivatives [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Currency derivatives	0
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Currency derivatives	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Interest rate swaps [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Interest rate swaps	$ 0