Derivative Instruments - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023	Jan. 31, 2024
Derivatives, Fair Value [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Prepaid Expense and Other Assets, Current		Prepaid Expense and Other Assets, Current		Prepaid Expense and Other Assets, Current
Total derivative assets	$ 12		$ 12		$ 21
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other Accrued Liabilities, Current		Other Accrued Liabilities, Current		Other Accrued Liabilities, Current
Total derivative liabilities	$ 10		$ 10		$ 15
Amount of loss recognized in accumulated other comprehensive income, net of tax, (effective portion)	(5)	$ (13)	(3)	$ (26)
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	3	18	6	40
Interest and other income (expense), net	1	5	1	7
Net revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	5	17	10	37
Cost of revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	0	0	0	0
Operating expenses
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	(2)	$ 1	(4)	$ 3
Prepaid expenses and other current assets | Foreign exchange contracts | Foreign currency contracts designated as cash flow hedges
Derivatives, Fair Value [Line Items]
Total derivative assets	7		7		8
Prepaid expenses and other current assets | Foreign exchange contracts | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivative assets	5		5		13
Other accrued liabilities | Foreign exchange contracts | Foreign currency contracts designated as cash flow hedges
Derivatives, Fair Value [Line Items]
Total derivative liabilities	5		5		8
Other accrued liabilities | Foreign exchange contracts | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivative liabilities	$ 5		$ 5		$ 7