Acquisition, Integration and Restructuring Expenses | TS Acquisition, Integration and Restructuring Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs	$ 6,221	$ 33,225
TS
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs		27,617
TS | Restructuring Charges
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs		10,872
TS | IT Related Costs [Member]
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs		7,330
TS | Professional services
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs		3,567
TS | Transaction Related Costs [Member]
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs		878
TS | Other Expense
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs		4,970
Americas
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs	2,900	13,900
Americas | Restructuring Charges
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs		3,400
Europe
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs	$ 3,000	18,000
Europe | Restructuring Charges
Acquisition and integration expenses [Line Items]
Business Combination, Acquisition Related Costs		$ 7,500