Consolidated Statements of Stockholders’ Equity - USD ($) $ in Millions	Total	Ordinary shares	Common stock	Paid-in capital	Retained earnings	Treasury shares	Employee Benefit Trust	Accumulated other comprehensive loss
Beginning balance at Jul. 31, 2022		$ 30	$ 0	$ 760	$ 7,594	$ (2,782)	$ (107)	$ (830)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury shares canceled		0			0	0
Ordinary shares canceled (in shares)		0		0
Common stock issued			0				61
Share-based compensation expense				49
Other				0			0
Net income	$ 1,889				1,889
Cash dividends declared					(858)
Share repurchases						(667)
Shares issued under employee stock plans					(68)	24
Total other comprehensive loss	(58)							(58)
Ending balance at Jul. 31, 2023	5,037	30	0	809	8,557	(3,425)	(46)	(888)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury shares canceled		0			0	0
Ordinary shares canceled (in shares)		0		0
Common stock issued			0				45
Share-based compensation expense				53
Other				2			1
Net income	1,735				1,735
Cash dividends declared					(631)
Share repurchases						(558)
Shares issued under employee stock plans					(72)	47
Total other comprehensive loss	(43)							(43)
Ending balance at Jul. 31, 2024	5,616	30	0	864	9,589	(3,936)	0	(931)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury shares canceled		(4)			(3,932)	3,936
Ordinary shares canceled (in shares)		(26)		26
Common stock issued			0				0
Share-based compensation expense				36
Other				0			0
Net income	1,856				1,856
Cash dividends declared					(652)
Share repurchases						(953)
Shares issued under employee stock plans					(85)	54
Total other comprehensive loss	(40)							(40)
Ending balance at Jul. 31, 2025	$ 5,832	$ 0	$ 0	$ 926	$ 6,776	$ (899)	$ 0	$ (971)