Restructuring, Other Exit Costs, and Facility Reductions (Details) $ in Millions	3 Months Ended
	Apr. 30, 2026 USD ($)
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 99
Additions	30
Payments	(77)
Ending Balance	52
Employee termination costs
Restructuring Reserve [Roll Forward]
Beginning Balance	97
Additions	27
Payments	(75)
Ending Balance	49
Other exit costs
Restructuring Reserve [Roll Forward]
Beginning Balance	2
Additions	3
Payments	(2)
Ending Balance	$ 3