Stockholders’ equity - Schedule of Share Activity (Details) - shares	3 Months Ended	12 Months Ended
	Oct. 31, 2024	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	0	0
Treasury stock, beginning balance (in shares)		(4,759,053)	(30,827,929)
Treasury stock, ending balance (in shares)		(4,759,053)	(30,827,929)
Balance at end of period (in shares)		201,343,253	0
Total shares outstanding at end of period (in shares)		196,584,200	201,343,253	204,003,471
Ordinary shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	232,171,182	232,171,182	232,171,182	232,171,182
Treasury shares canceled (in shares)		(30,827,929)	0	0
Change in shares issued (in shares)		(201,343,253)	0	0
Balance at end of period (in shares)		0	232,171,182	232,171,182
Common stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	0	0	0	0
Change in shares issued (in shares)	201,343,253	201,343,253	0	0
Balance at end of period (in shares)		201,343,253	0	0
Treasury shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock, beginning balance (in shares)		(4,759,053)	(30,827,929)	(27,893,680)	(21,078,577)
Treasury shares canceled (in shares)		30,827,929	0	0
Shares repurchases (in shares)		(5,026,408)	(3,317,654)	(7,022,242)
Treasury shares used to settle share-based compensation awards (in shares)		267,355	383,405	207,139
Treasury stock, ending balance (in shares)		(4,759,053)	(30,827,929)	(27,893,680)
Employee Benefit Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	0	0	274,031	846,491
Employee Benefit Trust shares used to settle share-based compensation awards (in shares)		0	253,212	572,460
Shares sold upon termination of Employee Benefit Trust (in shares)		0	20,819	0
Balance at end of period (in shares)		0	0	274,031