Derivative Instruments - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Jan. 31, 2022
Derivatives, Fair Value [Line Items]
Total derivative assets	$ 96		$ 18
Total derivative liabilities	20		11
Amount of gain (loss) recognized in accumulated other comprehensive income, net of tax, (effective portion)	55	$ 6
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	2	(4)
Net revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	6	(5)
Cost of revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	(1)	0
Operating expenses
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	(3)	1
Interest and other expense, net
Derivatives, Fair Value [Line Items]
Interest and other expense, net	24	$ 7
Prepaid expenses and other current assets | Foreign Exchange Contract | Foreign currency contracts designated as cash flow hedges
Derivatives, Fair Value [Line Items]
Total derivative assets	75		12
Prepaid expenses and other current assets and long-term other assets | Foreign Exchange Contract | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivative assets	21		6
Other accrued liabilities | Foreign Exchange Contract | Foreign currency contracts designated as cash flow hedges
Derivatives, Fair Value [Line Items]
Total derivative liabilities	15		7
Other accrued liabilities | Foreign Exchange Contract | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivative liabilities	$ 5		$ 4