Leases - Lease Costs and Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	$ 17	$ 21	$ 53	$ 66
Variable lease cost	4	4	12	12
Cash paid for operating leases included in operating cash flows			81	84
Non-cash operating lease liabilities arising from obtaining operating lease right-of-use assets			44	49
Variable lease payments			12	12
Cost of subscription and maintenance revenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	2	2	5	6
Variable lease cost	1	0	1	1
Cost of other revenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	1	1	2	3
Variable lease cost	0	0	0	0
Marketing and sales
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	7	9	22	28
Variable lease cost	1	2	5	5
Research and development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	5	7	17	21
Variable lease cost	2	1	4	4
General and administrative
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease cost	2	2	7	8
Variable lease cost	$ 0	$ 1	$ 2	$ 2