Commitments and Contingencies (Details)	9 Months Ended
	Oct. 31, 2020 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contingent Liability	$ 3,800,000
Guarantees, Fair Value Disclosure	10,900,000
Tax payments made [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss Contingency Accrual, Period Increase (Decrease)	11,200,000
Changes In Estimates [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss Contingency Accrual, Period Increase (Decrease)	12,300,000
Indemnification Agreement [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss Contingency Accrual, Period Increase (Decrease)	21,000,000.0
Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss Contingency Accrual	$ 4,900,000