Common shares, treasury shares, and dividends - Additional Information (Detail) - USD ($)			12 Months Ended
	Mar. 14, 2022	Jan. 29, 2022	Jan. 29, 2022	Jan. 30, 2021	Feb. 01, 2020	Jan. 21, 2022	Aug. 23, 2021	Aug. 22, 2021
Class of Stock [Line Items]
Common shares, par value (usd per share)		$ 0.18	$ 0.18	$ 0.18
Accelerated share repurchases, total Value committed to repurchase						$ 250,000,000
Accelerated share repurchases, payment		$ 250,000,000	$ 250,000,000
Treasury stock, shares, acquired		2,500,000
Accelerated share repurchases, initial price paid per share		$ 80
Accelerated share repurchases, prepayment amount, percent paid up front		80.00%	80.00%
Treasury stock reissued (in shares)			2,500,000	0	400,000
Treasury shares retired (in shares)			0
Cumulative undeclared dividends			$ 0
Subsequent Event
Class of Stock [Line Items]
Treasury stock, shares, acquired	800,000
Accelerated share repurchases, prepayment amount, percent to be paid upon final settlement	20.00%
2017 Program
Class of Stock [Line Items]
Remaining authorized repurchase amount		$ 413,200,000	413,200,000				$ 225,000,000	$ 165,600,000
Increase to authorized amount		500,000,000	500,000,000
Stock repurchase program, authorized amount		$ 1,159,400,000	1,159,400,000
Series A Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Dividends on redeemable convertible preferred shares			$ 1,700,000	$ 1,700,000	$ 1,700,000