Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	Apr. 30, 2014	Jan. 31, 2014	Apr. 30, 2014 Synthetic Lease Facility property	Apr. 30, 2014 Minimum Synthetic Lease Facility	Apr. 30, 2014 Maximum Synthetic Lease Facility	Apr. 30, 2014 Accrued Expenses and Other Liabilities SPAIN	Jan. 31, 2014 Accrued Expenses and Other Liabilities SPAIN	Apr. 30, 2014 Option One property	Apr. 30, 2014 Option Two property	Apr. 30, 2014 Option Three property
Loss Contingencies [Line Items]
Minimum number of days' notice to opt for purchase during lease, days			30 days
Number of properties subject to purchase during lease period			1
Option expiration, days until lease expiration, days				270 days	360 days
Minimum number of properties, for which an option needs to be elected								2	2	2
Residual value guarantee, aggregate amount			$ 133.8
Future minimum payments			2.6
Guarantor Obligations, Maximum Exposure, Undiscounted	11.7	13.4
Value added tax payable						58.2	56.4
CIDE tax	$ 27.6	$ 25.3