Commitments And Contingencies (Narrative) (Details) (USD $)			3 Months Ended		3 Months Ended			12 Months Ended				12 Months Ended			1 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Apr. 30, 2013 SPAIN subsidiary	Jan. 31, 2013 SPAIN Accrued Expenses and Other Liabilities	Jan. 31, 2013 Subsequent Event SPAIN	Jan. 31, 2013 Subsequent Event SPAIN Litigation Charge	Jan. 31, 2013 Subsequent Event SPAIN Interest Expense	Jan. 31, 2013 Synthetic Lease Facility	Jan. 31, 2013 Synthetic Lease Facility Option One property	Jan. 31, 2013 Synthetic Lease Facility Option Two property	Jan. 31, 2013 Synthetic Lease Facility Option Three property	Jan. 31, 2013 Operating Leases	Jan. 31, 2012 Operating Leases	Jan. 31, 2011 Operating Leases	Jun. 30, 2013 2013 Synthetic Lease Subsequent Event property	Jun. 30, 2013 2013 Synthetic Lease Minimum Subsequent Event	Jun. 30, 2013 2013 Synthetic Lease Maximum Subsequent Event	Jun. 30, 2013 2013 Synthetic Lease Option One Subsequent Event property	Jun. 30, 2013 2013 Synthetic Lease Option Two Subsequent Event property	Jun. 30, 2013 2013 Synthetic Lease Option Three Subsequent Event property
Loss Contingencies [Line Items]
Rental expense for operating leases												$ 51,500,000	$ 56,500,000	$ 53,500,000
Lease period during which purchase option is available, years								4 years
Option expiration, days until lease expiration, days								180 days								270 days	360 days
Minimum number of properties, for which an option needs to be elected									2									2
Number of properties, subject to options on lease expiration										2	2								2	2
Residual value guarantee, aggregate amount								124,700,000							133,800,000
Future minimum payments	222,700,000							800,000
Minimum number of days' notice to opt for purchase during lease, days															30 days
Number of properties subject to purchase options during lease period															1
Future annual lease payments															2,800,000
Number of subsidiaries subject to audit			1
Increase in accrual for value added tax matters					41,000,000	29,500,000	11,500,000
Value added tax payable	236,000,000	187,500,000		55,600,000
CIDE tax	29,700,000
Aggregate amount of guarantees, outstanding	$ 31,300,000	$ 28,400,000