Equity Compensation - Narrative (Details) shares in Thousands, $ in Millions	3 Months Ended					9 Months Ended
	Oct. 31, 2023 USD ($) shares	Jul. 31, 2023 USD ($)	Apr. 30, 2023 USD ($)	Oct. 31, 2022 USD ($)	Jul. 31, 2022 USD ($)	Oct. 31, 2023 USD ($) period shares	Oct. 31, 2022 USD ($)	Jan. 31, 2022 USD ($)	May 11, 2021 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of common stock issued to settle liability-classified restricted common stock		$ 8	$ 1	$ 3	$ 5	$ 9	$ 8
Market capitalization						2,000
Share-based compensation expense	$ 181			172		$ 543	496
Expected dividends						0.00%
1998 Employee Qualified Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of compensation that eligible employees can use to purchase common stock, maximum						15.00%
Percentage of fair market value eligible employees can purchase common stock, minimum						85.00%
Number of exercise period | period						4
Term of exercise period						6 months
Term of offering period						24 months
Upchain
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized related to acquisition									$ 13
Shares issued in period (in shares) | shares						39
Value of shares issued						$ 8
Other Fiscal 2022 Acquisitions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized related to acquisition								$ 11
Remaining shares estimated to be issued (in shares) | shares	33					33
Fiscal 2023 Acquisitions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized related to acquisition	$ 5					$ 5
Series of Individually Immaterial Business Acquisitions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Value of shares issued						$ 1
Remaining shares estimated to be issued (in shares) | shares	13					13
Restricted Stock Units (RSUs) and Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vested in period, fair value						$ 476	402
Awards granted in period (in shares) | shares						3,544
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted in period (in shares) | shares						3,233
Share based compensation expense	$ 151			130		$ 445	383
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted in period (in shares) | shares						311
Share based compensation expense	11			13		$ 32	$ 42
Market capitalization						$ 2,000
Award vesting period						3 years
Expected dividends						0.00%	0.00%
Performance Stock Units | Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting percentage (in percentage)						33.33%
Performance Stock Units | Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting percentage (in percentage)						33.33%
Performance Stock Units | Share-based Compensation Award, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting percentage (in percentage)						33.33%
Restricted Stock | Fiscal 2023 Acquisitions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period						2 years
Shares issued in period (in shares) | shares						40
Common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 5			$ 10		$ 15	$ 27
Common stock | Series of Individually Immaterial Business Acquisitions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued in period (in shares) | shares						9