Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified		1 Months Ended	3 Months Ended						3 Months Ended			6 Months Ended		3 Months Ended
	Jul. 31, 2013	Jun. 30, 2013 Synthetic Lease Facility property	Jul. 31, 2013 Synthetic Lease Facility	Jul. 31, 2013 Option One property	Jul. 31, 2013 Option Two property	Jul. 31, 2013 Option Three property	Jul. 31, 2013 Financial Guarantee	Jan. 31, 2013 Financial Guarantee	Jul. 31, 2013 Minimum Synthetic Lease Facility	Jul. 31, 2013 Maximum Synthetic Lease Facility	Jan. 31, 2013 SPAIN	Jul. 31, 2013 SPAIN subsidiary	Jul. 31, 2013 Accrued Expenses and Other Liabilities SPAIN	Jan. 31, 2013 Litigation Charge SPAIN	Jan. 31, 2013 Interest Expense SPAIN
Loss Contingencies [Line Items]
Option for Purchase During Lease, Minimum Number of Days Notice, Days			30 days
Number of Properties Subject to Purchase Options, During Lease		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			2.8
Aggregate amount of guarantees							46.2	31.3
Number of Subsidiaries Subject to Audit												1
Accrual for Value Added Tax Matters Increase (Decrease)											41.0			29.5	11.5
Value Added Tax Payable													55.0
CIDE tax	$ 26.1