Revenue Recognition - Narrative (Details) $ in Millions	12 Months Ended
	Jan. 31, 2022 USD ($) category	Jan. 31, 2021 USD ($)
Revenue from External Customer [Line Items]
Number of revenue categories | category	3
Contract with customer, liability, revenue recognized | $	$ 2,500	$ 2,240
Minimum
Revenue from External Customer [Line Items]
Subscription payment terms	30 days
EBA payment terms	30 days
Maximum
Revenue from External Customer [Line Items]
Subscription payment terms	45 days
EBA payment terms	60 days