Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021	Jan. 31, 2022	Mar. 31, 2021	Mar. 15, 2021
Significant Accounting Policies [Line Items]
Subscriptions revenue contracts term			3 years
Accounts receivable, net of allowances	$ 200,841		$ 200,841		$ 226,191
Short-term unbilled receivable	9,700		9,700		13,900
Revenue expected to be recognized from remaining performance obligation	1,452,600		1,452,600
Revenue recognized from performance obligations satisfied in prior periods	1,700		2,500
Revenue recognized from deferred revenue	$ 190,000	$ 153,100	$ 408,700	$ 314,800
Deferred commission, amortization period	5 years		5 years
Capitalized commission costs	$ 9,200	9,100	$ 23,000	22,400
Amortization of deferred commissions	6,200	$ 4,800	17,600	$ 13,300
Subscription
Significant Accounting Policies [Line Items]
Deferred revenue, subscription revenue	507,000		$ 507,000		484,100
Coupa K.K.
Significant Accounting Policies [Line Items]
Ownership percentage							51.00%
Variable Interest Entity, Primary Beneficiary | Coupa K.K.
Significant Accounting Policies [Line Items]
Ownership percentage						51.00%
Maximum
Significant Accounting Policies [Line Items]
Payment terms of customers			30 days
Other Assets
Significant Accounting Policies [Line Items]
Long-term unbilled receivables	$ 220		$ 220		$ 1,900