Cash and Cash Equivalents, Investments, and Funds Receivable and Amounts Held for Customers - Schedule of the Stated Maturity Date of the Security (Details) - USD ($) $ in Millions	Oct. 31, 2025	Jul. 31, 2025
Amortized Cost
Due within one year	$ 209	$ 1,694
Due within two years	71	62
Due within three years	58	61
Total available-for-sale debt securities	338	1,817
Fair Value
Due within one year	209	1,694
Due within two years	72	63
Due within three years	59	61
Total available-for-sale debt securities	$ 340	$ 1,818