Leases - Lease Costs and Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	$ 18	$ 22	$ 36	$ 45
Variable lease cost	4	3	8	8
Cash paid for operating leases included in operating cash flows			55	60
Non-cash operating lease liabilities arising from obtaining operating lease right-of-use assets			38	37
Variable lease payments			8	8
Cost of subscription and maintenance revenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	1	2	3	4
Variable lease cost	0	1	0	1
Cost of other revenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	0	1	1	2
Variable lease cost	0	0	0	0
Marketing and sales
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	8	9	15	19
Variable lease cost	2	1	4	3
Research and development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	6	7	12	14
Variable lease cost	1	1	2	3
General and administrative
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	3	3	5	6
Variable lease cost	$ 1	$ 0	$ 2	$ 1