Stockholders' Equity - Restricted Stock Unit and Restricted Stock Activity (Details) - Restricted Stock Units (RSUs) $ / shares in Units, shares in Thousands, $ in Billions	6 Months Ended
	Jan. 31, 2023 USD ($) $ / shares shares
Number of Shares
Nonvested at beginning of period (in shares) | shares	11,467
Granted (in shares) | shares	975
Vested (in shares) | shares	(1,814)
Forfeited (in shares) | shares	(515)
Nonvested at end of period (in shares) | shares	10,113
Weighted Average Grant Date Fair Value
Nonvested, weighted average grant date fair value, at beginning of period (in dollars per shares) | $ / shares	$ 413.32
Granted, weighted average grant date fair value (in dollars per shares) | $ / shares	414.51
Vested, weighted average grant date fair value (in dollars per shares) | $ / shares	405.08
Forfeited, weighted average grant date fair value (in dollars per shares) | $ / shares	316.43
Nonvested, weighted average grant date fair value, at end of period (in dollars per shares) | $ / shares	$ 419.85
Unrecognized compensation cost related to non-vested RSUs | $	$ 3.7
Weighted average vesting period, in years	2 years 9 months 18 days