Acquisition, Integration and Restructuring Expenses \| Global Business Optimization Program (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2020	Apr. 30, 2019
Restructuring Cost and Reserve
Acquisition, integration and restructuring expenses	$ 17,681	$ 6,221
Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring Charges	1,669	6,221
Restructuring and Related Cost, Cost Incurred to Date	61,581
Restructuring Charges \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring Charges	1,669
Employee Severance \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring Charges	1,379	4,147
Restructuring and Related Cost, Cost Incurred to Date	39,773
Professional services \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring Charges	290	2,074
Restructuring and Related Cost, Cost Incurred to Date	21,808
Minimum \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	70,000
Maximum \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	80,000
Europe \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring Charges	(251)	3,024
Restructuring and Related Cost, Cost Incurred to Date	37,165
Europe \| Minimum \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	40,000
Europe \| Maximum \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	45,000
Americas
Restructuring Cost and Reserve
Acquisition, integration and restructuring expenses		2,900
Restructuring Charges	17,000
Americas \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring Charges	1,017	2,911
Restructuring and Related Cost, Cost Incurred to Date	20,994
Americas \| Minimum \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	30,000
Americas \| Maximum \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring and Related Cost, Expected Cost	35,000
Asia-Pacific \| Global Business Optimization Program
Restructuring Cost and Reserve
Restructuring Charges	903	$ 286
Restructuring and Related Cost, Cost Incurred to Date	$ 3,422

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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