Income Taxes (Details) $ in Thousands	9 Months Ended
	Oct. 31, 2020 USD ($)
Valuation Allowance [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (35,600)
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	41,800
Income Tax Expense Benefit Continuing Operations Discrete Items	77,400
Pre-Tax Losses Without Tax Benefits Recognized	180,700
United States
Valuation Allowance [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	(10,600)
GERMANY
Valuation Allowance [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	(6,000)
SWITZERLAND
Valuation Allowance [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (78,900)