Stockholders' Equity - Schedule of Restricted Stock Activity (Details) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jan. 31, 2025 USD ($) $ / shares shares
Restricted stock
Outstanding (in millions)
Beginning balance (in shares)	28
Granted (in shares)	12
Canceled (in shares)	(3)
Vested and converted to shares (in shares)	(12)
Ending balance (in shares)	26
Expected to vest (in shares)	23
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 202.95
Granted (in dollars per share) | $ / shares	302.73
Canceled (in dollars per share) | $ / shares	226.68
Vested and converted to shares (in dollars per share) | $ / shares	203.70
Ending balance (in dollars per share) | $ / shares	$ 250.50
Aggregate Intrinsic Value (in millions)
Aggregate Intrinsic Value, Outstanding | $	$ 8,796
Aggregate Intrinsic Value, Expected to vest | $	$ 7,693
Performance shares
Outstanding (in millions)
Granted (in shares)	1
Weighted Average Grant Date Fair Value
Granted (in dollars per share) | $ / shares	$ 290.64