Restructuring - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
		Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Restructuring Cost and Reserve [Line Items]
Charges	[1],[2]	$ 828	$ 0	$ 0
The Plan
Restructuring Cost and Reserve [Line Items]
Charges		828
The Plan | Workforce reduction
Restructuring Cost and Reserve [Line Items]
Charges		683
The Plan | Real estate exits and office space reductions
Restructuring Cost and Reserve [Line Items]
Charges		$ 145

[1] Amounts include amortization of intangible assets acquired through business combinations, as follows: Fiscal Year Ended January 31,202320222021Cost of revenues$1,035 $897 $662 Marketing and sales916 727 459 

[2] Amounts include stock-based compensation expense, as follows:  Fiscal Year Ended January 31, 202320222021Cost of revenues$499 $386 $241 Research and development1,136 918 703 Marketing and sales1,256 1,104 941 General and administrative368 371 305 Restructuring 20 0 0