Shareholders' equity - Narrative (Details) - USD ($) shares in Thousands |
3 Months Ended | 6 Months Ended | 102 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
Aug. 01, 2026 |
May 02, 2026 |
Aug. 02, 2025 |
May 03, 2025 |
Aug. 01, 2026 |
Aug. 02, 2025 |
Aug. 01, 2026 |
Sep. 09, 2026 |
Jan. 31, 2026 |
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| Class of Stock [Line Items] | |||||||||
| Accelerated Share Repurchases, Settlement (Payment) or Receipt | $ 50,000,000 | $ 50,000,000 | $ 50,000,000 | ||||||
| Treasury Stock, Shares, Acquired | 590 | ||||||||
| Amount repurchased | $ 87,200,000 | $ 82,700,000 | $ 32,300,000 | $ 117,400,000 | |||||
| 2017 Program | |||||||||
| Class of Stock [Line Items] | |||||||||
| Stock repurchase program, authorized amount | $ 2,100,000,000 | ||||||||
| Amount repurchased | 169,900,000 | $ 149,700,000 | 1,800,000,000 | ||||||
| Remaining authorized repurchase amount | $ 348,000,000.0 | $ 348,000,000.0 | $ 348,000,000.0 | ||||||
| 2017 Program | Subsequent Event | |||||||||
| Class of Stock [Line Items] | |||||||||
| Remaining authorized repurchase amount | $ 700,000,000 | ||||||||
| X | ||||||||||
- Definition Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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