Shareholders’ equity - Schedule of Share Activity (Details) - shares	3 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	201,343,253
Treasury shares, beginning balance (in shares)	(5,447,701)		(4,759,053)
Treasury shares, ending balance (in shares)	(5,447,701)
Balance at end of period (in shares)	201,343,253
Total shares outstanding at end of period (in shares)	195,895,552	200,281,780
Ordinary shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	0	232,171,182
Treasury shares canceled (in shares)	0	(30,827,929)
Ordinary shares canceled (in shares)	0	(201,343,253)
Balance at end of period (in shares)	0	0
Common stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	201,343,253	0
Change in shares issued (in shares)	0	201,343,253
Balance at end of period (in shares)	201,343,253	201,343,253
Treasury shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury shares, beginning balance (in shares)	(5,447,701)	(1,061,473)	(4,759,053)	(30,827,929)
Treasury shares canceled (in shares)	0	30,827,929
Repurchases of ordinary shares (in shares)	(901,308)	(1,310,163)
Treasury shares used to settle share-based compensation awards (in shares)	212,660	248,690
Treasury shares, ending balance (in shares)	(5,447,701)	(1,061,473)