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Disaggregation of Revenues and Geographic Information - Summary of Revenues by Geographic Area (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021 USD ($) market	Oct. 31, 2020 USD ($)	Oct. 31, 2021 USD ($) market	Oct. 31, 2020 USD ($)
Disaggregation of Revenue [Line Items]
Number of primary geographical markets | market	2		2
Revenue	$ 1,327,263	$ 1,105,960	$ 3,762,657	$ 3,186,312
United States
Disaggregation of Revenue [Line Items]
Revenue	991,747	833,544	2,817,749	2,400,940
Other countries
Disaggregation of Revenue [Line Items]
Revenue	$ 335,516	$ 272,416	$ 944,908	$ 785,372

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