Derivative Instruments - Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021	Jan. 31, 2022
Derivatives, Fair Value [Line Items]
Total derivative assets	$ 80		$ 80		$ 18
Total derivative liabilities	14		14		11
Amount of gain (loss) recognized in accumulated other comprehensive income, net of tax, (effective portion)	18	$ 4	73	$ 10
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	3	(6)	5	(10)
Interest and other expense, net	6	(2)	30	5
Net revenue
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	11	(5)	17	(10)
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	(2)	0
Operating expenses
Derivatives, Fair Value [Line Items]
Amount and location of gain (loss) reclassified from accumulated other comprehensive loss into income (effective portion)	(7)	$ (1)	(10)	$ 0
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		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	5		5		6
Other accrued liabilities | Foreign Exchange Contract | Foreign currency contracts designated as cash flow hedges
Derivatives, Fair Value [Line Items]
Total derivative liabilities	13		13		7
Other accrued liabilities | Foreign Exchange Contract | Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Total derivative liabilities	$ 1		$ 1		$ 4