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Acquisitions - Narrative (Details) $ in Millions	3 Months Ended		12 Months Ended
Acquisitions - Narrative (Details) $ in Millions	Apr. 30, 2022 USD ($) tradingDay businessCombination shares	Apr. 30, 2021 USD ($)	Jan. 31, 2022 tradingDay
Business Acquisition [Line Items]
Fair value of common stock issued related to business combination	$ 10	$ 3
Allocated share-based compensation expense	$ 155	$ 116
Consecutive trading days \| tradingDay	90		90
Other
Business Acquisition [Line Items]
Number of businesses combinations \| businessCombination	2
Consideration transferred	$ 114
Payments to acquire businesses	96
Fair value of common stock issued related to business combination	10
Business combination, consideration transferred, other	97
Allocated share-based compensation expense	5
Employee benefits and share-based compensation	2
Goodwill	43
Other \| Certain Employees of Acquiree
Business Acquisition [Line Items]
Fair value of common stock issued related to business combination	5
Other \| Prepaid expenses and other current assets
Business Acquisition [Line Items]
Business combination, contingent consideration, liability	$ 10
Other \| Restricted Stock
Business Acquisition [Line Items]
Shares issued in period (in shares) \| shares	40,289
Other \| Share-based Compensation Award, Tranche One
Business Acquisition [Line Items]
PSU annual vesting percentage (in percentage)	40.00%
Other \| Share-based Compensation Award, Tranche Two
Business Acquisition [Line Items]
PSU annual vesting percentage (in percentage)	60.00%