Derivative Instruments - Schedule of Fair Values of Outstanding Derivative Instruments (Details) - USD ($) $ in Millions	Jul. 31, 2026	Jan. 31, 2026
Derivatives, Fair Value [Line Items]
Derivative assets:	$ 44	$ 21
Derivative liabilities:	94	148
Non-designated hedges \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:AccruedLiabilitiesCurrent
Derivatives, Fair Value [Line Items]
Derivative liabilities:	8	12
Non-designated hedges \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:PrepaidExpenseAndOtherAssetsCurrent
Derivatives, Fair Value [Line Items]
Derivative assets:	5	4
Cash flow hedges \| Cash flow hedges \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:AccruedLiabilitiesCurrent
Derivatives, Fair Value [Line Items]
Derivative liabilities:	51	71
Cash flow hedges \| Cash flow hedges \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherAssetsNoncurrent
Derivatives, Fair Value [Line Items]
Derivative assets:	18	2
Cash flow hedges \| Cash flow hedges \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilitiesNoncurrent
Derivatives, Fair Value [Line Items]
Derivative liabilities:	35	65
Cash flow hedges \| Cash flow hedges \| Location, Statement of Financial Position, Balance [Axis]: us-gaap:PrepaidExpenseAndOtherAssetsCurrent
Derivatives, Fair Value [Line Items]
Derivative assets:	$ 21	$ 15