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Employee compensation plans - Schedule of Stock Appreciation Rights (Details) - Stock Appreciation Rights (SARs) | 12 Months Ended
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Dec. 31, 2024 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of OARs Outstanding (in shares) | shares | 2,642,736
Strike price (in dollars per share) | $ 0
Weighted Average Remaining Contractual Life | 3 years
Fair value (in dollars per share) | $ 0
January 10, 2020 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of OARs Outstanding (in shares) | shares | 478,680
Strike price (in dollars per share) | $ 27.54
Weighted Average Remaining Contractual Life | 9 days
Fair value (in dollars per share) | $ 36.57
January 11, 2021 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of OARs Outstanding (in shares) | shares | 573,329
Strike price (in dollars per share) | $ 32.16
Weighted Average Remaining Contractual Life | 1 year
Fair value (in dollars per share) | $ 32.57
January 7, 2022 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of OARs Outstanding (in shares) | shares | 605,087
Strike price (in dollars per share) | $ 49.57
Weighted Average Remaining Contractual Life | 2 years
Fair value (in dollars per share) | $ 18.87
January 6, 2023 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of OARs Outstanding (in shares) | shares | 506,170
Strike price (in dollars per share) | $ 45.33
Weighted Average Remaining Contractual Life | 3 years
Fair value (in dollars per share) | $ 25.00
January 5, 2024 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of OARs Outstanding (in shares) | shares | 479,470
Strike price (in dollars per share) | $ 40.78
Weighted Average Remaining Contractual Life | 4 years
Fair value (in dollars per share) | $ 29.48

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