Leases - Lease Costs and Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	$ 18	$ 23
Variable lease cost	4	5
Cash paid for operating leases included in operating cash flows	28	34
Non-cash operating lease liabilities arising from obtaining operating lease right-of-use assets	38	23
Variable lease payments	4	5
Cost of subscription and maintenance revenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	2	2
Variable lease cost	0	0
Cost of other revenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	1	1
Variable lease cost	0	0
Marketing and sales
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	7	10
Variable lease cost	2	2
Research and development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	6	7
Variable lease cost	1	2
General and administrative
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	2	3
Variable lease cost	$ 1	$ 1