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Share capital | 6 Months Ended
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Jun. 30, 2025
Equity [Abstract] |
Share capital | Share capital On February 18, 2025, the Company's Board of Directors authorized an additional share repurchase program under which the Company could repurchase up to $750.0 million of the outstanding ordinary shares of the Company by way of redemption. Along with unutilized amounts under previous authorizations, this permitted the Company as of February 18, 2025 to repurchase up to $1.0 billion worth of ordinary shares. During March 2025, 1,360,537 shares were redeemed by the Company under our repurchase program for a total consideration of $250.0 million. During June 2025, a further 1,717,181 shares were redeemed by the Company under our repurchase program for a total consideration of $250.0 million. As of June 30, 2025, the Company had remaining authorization to repurchase up to $500.0 million of ordinary shares under the repurchase program.
| Total number of shares purchased | Average price paid per share | Total number of shares purchased as part of publicly announced program |  | Approximate dollar value of shares that may yet be purchased under the program (in millions)
March 3/12/2025 - 3/19/2025 | 1,360,537 |  | $183.75 |  | 1,360,537 |  |  | $750.0 |
June 6/13/2025 - 6/23/2025 | 1,717,181 |  | $145.59 |  | 1,717,181 |  |  | $500.0 |
| 3,077,718 |  | $162.46 |  | 3,077,718 |  |  |
During the year ended December 31, 2024, 2,179,699 ordinary shares were redeemed by the Company under this repurchase program for a total consideration of $500.0 million.
| Total number of shares purchased | Average price paid per share | Total number of shares purchased as part of publicly announced program |  | Approximate dollar value of shares that may yet be purchased under the program (in millions)
September 09/18/2024 - 09/25/2024 | 337,070 |  | $296.67 |  | 337,070 |  |  | $400.0 |
October 10/28/2024 - 10/31/2024 | 409,512 |  | $228.57 |  | 409,512 |  |  | $556.4 |
November 11/01/2024 - 11/07/2024 | 479,524 |  | $221.87 |  | 479,524 |  |  | $450.0 |
December 12/02/2024 - 12/19/2024 | 953,593 |  | $209.73 |  | 953,593 |  |  | $250.0 |
| 2,179,699 |  | $229.39 |  | 2,179,699 |  |  |
All ordinary shares redeemed under the repurchase program are canceled in accordance with the constitutional documents of the Company and the nominal value of these shares transferred to an undenominated capital fund as required under Irish Company law. Repurchases under the repurchase program may be effected from time to time in open market or privately negotiated transactions in accordance with agreed terms and limitations. The timing and amount of the repurchase transactions under this program will depend on a variety of factors, including market conditions and corporate and regulatory considerations. Depending upon results of operations, market conditions and the development of the economy, as well as other factors, generally we will consider share repurchases on an opportunistic basis from time to time.

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