Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Loss Contingencies
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 3,300	$ 3,700
Value added tax assessments	1,652	1,049	$ (8,796)
Europe | Spain
Loss Contingencies
Loss Contingency Accrual, Payments			12,300
Value added tax payable	10,700
Europe | Spain | Value added tax assessment
Loss Contingencies
Loss Contingency Accrual, Period Increase (Decrease)	1,200	1,500	(16,400)
Europe | Spain | Interest Expense
Loss Contingencies
Loss Contingency Accrual, Period Increase (Decrease)	900	1,100	(9,000)
Europe | Spain | Accrued expenses and other liabilities
Loss Contingencies
Loss Contingency Accrual, Period Increase (Decrease)	2,100	2,600	(25,400)
Americas | Brazil | Accrued expenses and other liabilities
Loss Contingencies
CIDE tax	23,600
European Subsidiary | Value added tax assessment
Loss Contingencies
Value added tax assessments			7,600
Operating Leases
Loss Contingencies
Rental expense for operating leases	$ 83,600	$ 53,000	$ 45,300