Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jan. 31, 2016	Jul. 31, 2015	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Loss Contingencies [Line Items]
Operating expenses, value added tax assessments			$ (8,796)	$ (6,229)	$ 0
CIDE tax	$ 17,300		17,300	24,600
Guarantor Obligations, Maximum Exposure, Undiscounted	4,600		4,600	5,500
Spain
Loss Contingencies [Line Items]
Operating expenses, value added tax assessments				(6,200)
Spain | Accrued expenses and other liabilities
Loss Contingencies [Line Items]
Operating expenses, value added tax assessments			(25,400)
Loss Contingency Accrual, Payments			12,300
Value added tax payable				43,700
Spain | Value added tax assessment
Loss Contingencies [Line Items]
Operating expenses, value added tax assessments			(16,400)	(6,200)
Spain | Interest Expense
Loss Contingencies [Line Items]
Operating expenses, value added tax assessments			(9,000)
European Subsidiary | Value added tax assessment
Loss Contingencies [Line Items]
Operating expenses, value added tax assessments	800	$ (9,600)	7,600
Operating Leases
Loss Contingencies [Line Items]
Rental expense for operating leases			45,300	$ 52,800	$ 55,500
2013 Synthetic Lease
Loss Contingencies [Line Items]
Residual value guarantee, aggregate amount	133,800		133,800
Future annual lease payments	$ 3,000		$ 3,000