Retirement Benefit Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Defined Contribution Plan Disclosure [Line Items]
Projected benefit obligation of plan assets	$ 76	$ 107
Accumulated benefit obligation	69	100
Fair value of plan assets	76	112
Other long-term liabilities	5	9
Net periodic (benefit) cost	3	$ 3	$ 3
Estimated future employer contributions in next fiscal year	$ 5
Mandatory Retirement Savings, Cash Balance Plan
Defined Contribution Plan Disclosure [Line Items]
Weighted-average interest crediting rate	1.00%	1.00%	1.00%
Supplementary Retirement Savings, Cash Balance Plan
Defined Contribution Plan Disclosure [Line Items]
Weighted-average interest crediting rate	0.30%	0.30%	0.10%
United States
Defined Contribution Plan Disclosure [Line Items]
Maximum annual contributions per employee	75.00%
Cost recognized	$ 26	$ 24	$ 22
Foreign Plan
Defined Contribution Plan Disclosure [Line Items]
Contributions paid by employer	$ 39	$ 38	$ 32