Condensed Consolidated Balance Sheets (Parenthetical) $ in Millions	Jan. 31, 2025 USD ($) $ / shares shares	Jan. 31, 2025 £ / shares	Jul. 31, 2024 USD ($) $ / shares shares	Jul. 31, 2024 £ / shares
Allowance for credit loss | $	$ 31		$ 21
Ordinary shares, par value (in pound sterling per share) | $ / shares	$ 0.0001		$ 0.0001
Ordinary shares, shares authorized (in shares)	500,000,000		500,000,000
Ordinary shares, shares issued (in shares)	201,343,253		0
Treasury stock (in shares)	2,312,552		30,827,929
Ordinary shares
Ordinary shares, par value (in pound sterling per share) | £ / shares		£ 10		£ 10
Ordinary shares, shares authorized (in shares)	500,000,000		500,000,000
Ordinary shares, shares issued (in shares)	0		232,171,182