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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 |  |  |

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