Derivative Instruments - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022	Jan. 31, 2023
Derivatives, Fair Value [Line Items]
Total derivative assets	$ 12		$ 12		$ 14
Total derivative liabilities	11		11		31
Amount of (loss) gain recognized in accumulated other comprehensive income, net of tax, (effective portion)	(13)	$ 18	(26)	$ 73
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	18	3	40	5
Interest and other (expense) income, net	5	6	7	30
Net revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	17	11	37	17
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	(1)	0	(2)
Operating expenses
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	1	$ (7)	3	$ (10)
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	8		8		9
Prepaid expenses and other current assets and long-term other assets | Foreign exchange contracts | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivative assets	4		4		5
Other accrued liabilities | Foreign exchange contracts | Foreign currency contracts designated as cash flow hedges
Derivatives, Fair Value [Line Items]
Total derivative liabilities	8		8		20
Other accrued liabilities | Foreign exchange contracts | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivative liabilities	$ 3		$ 3		$ 11