Shareholders’ equity - Schedule of Share Activity (Details) - shares		3 Months Ended
	Aug. 01, 2024	Oct. 31, 2024	Oct. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	0	0
Treasury shares, beginning balance (in shares)		(1,061,473)		(30,827,929)
Total shares outstanding at end of period (in shares)		200,281,780	203,767,400
Treasury shares, ending balance (in shares)		(1,061,473)
Balance at end of period (in shares)		201,343,253
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
Treasury shares canceled (in shares)		(30,827,929)	0
Ordinary shares canceled (in shares)		(201,343,253)	0
Balance at end of period (in shares)		0	232,171,182
Common stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	0	0	0
Change in shares issued (in shares)	201,343,253	201,343,253	0
Balance at end of period (in shares)		201,343,253	0
Treasury Shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury shares, beginning balance (in shares)		(1,061,473)	(28,382,963)	(30,827,929)	(27,893,680)
Treasury shares canceled (in shares)		30,827,929	0
Repurchases of ordinary shares (in shares)		(1,310,163)	(697,398)
Treasury shares used to settle share-based compensation awards (in shares)		248,690	208,115
Treasury shares, ending balance (in shares)		(1,061,473)	(28,382,963)
Employee Benefit Trusts
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period (in shares)	0	0	274,031
Employee Benefit Trust shares used to settle share-based compensation awards (in shares)		0	253,212
Balance at end of period (in shares)		0	20,819