Net Income Per Share (Computation of Basic and Diluted Net Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
Oct. 31, 2024	Oct. 31, 2023
Earnings Per Share [Abstract]
Net income	$ 350.7	$ 194.2
Weighted-average shares used to compute net income per share, basic (in shares)	326.8	310.1
Weighted-average effect of potentially dilutive securities:
Convertible senior notes (in shares)	5.9	11.6
Warrants related to the issuance of convertible senior notes (in shares)	12.2	16.0
Employee equity incentive plans (in shares)	9.6	12.1
Weighted-average shares used to compute net income per share, diluted (in shares)	354.5	349.8
Net income per share, basic (in usd per share)	$ 1.07	$ 0.63
Net income per share, diluted (in usd per share)	$ 0.99	$ 0.56

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