Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Loss Contingencies
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 3,700	$ 4,600
Value added tax assessments	1,049	(8,796)	$ (6,229)
Europe | Spain
Loss Contingencies
Value added tax payable	7,300
Value added tax assessments	1,500		(6,229)
Europe | Spain | Value added tax assessment
Loss Contingencies
Loss Contingency Accrual, Period Increase (Decrease)	1,500	(16,400)
Europe | Spain | Interest Expense
Loss Contingencies
Loss Contingency Accrual, Period Increase (Decrease)	1,100	(9,000)
Loss Contingency Accrual, Payments		12,300
Europe | Spain | Accrued expenses and other liabilities
Loss Contingencies
Loss Contingency Accrual, Period Increase (Decrease)	2,600	(25,400)	(6,229)
Americas | Brazil | Accrued expenses and other liabilities
Loss Contingencies
CIDE tax	22,800
Operating Leases
Loss Contingencies
Rental expense for operating leases	53,000	$ 45,300	$ 52,800
2013 Synthetic Lease
Loss Contingencies
Residual value guarantee, aggregate amount	133,800
Future annual lease payments	$ 3,400