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Share-based payments	6 Months Ended
Share-based payments	Jun. 30, 2025
Share-Based Payment Arrangement [Abstract]
Share-based payments	Share-based payments. As part of its incentive compensation program for executives and senior management employees, the Company provides share-based awards, which primarily include a combination of time-based restricted stock units and performance-based restricted stock units and are typically granted annually during the first quarter of the year. Each restricted stock unit represents a contractual right to receive a share of the Company's Common Stock. The time-based units generally vest on each of the first three anniversaries of the grant date, while the performance-based units vest upon achievement of certain financial objectives and an employee service requirement over a period of approximately three years. The Company has not granted stock options since 2021 and all outstanding stock option awards are already fully vested. The compensation expense associated with the share-based awards is calculated based on the fair value of the related award and recognized over the corresponding vesting period. During the first six months of 2025 and 2024, the Company granted time-based and performance-based restricted stock units with aggregate grant-date fair values of $15.3 million (215,000 units with an average grant price per unit of $71.36) and $13.8 million (225,000 units with an average grant price per unit of $61.44), respectively.