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Share Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2025
Share-Based Payment Arrangement [Abstract] |
Summary Of Non-Vested Share Award Related Compensation Expense Recognized | The following table summarizes time-based share award compensation expense and the related income tax benefit recognized (in millions):
| Years Ended December 31,
| 2025 |  | 2024 |  | 2023
Contract drilling expenses (exclusive of depreciation and reimbursable expenses) | $ | 9.3 |  |  | $ | 8.8 |  |  | $ | 6.8 |
General and administrative | 8.6 |  |  | 8.7 |  |  | 9.0 |
| 17.9 |  |  | 17.5 |  |  | 15.8 |
Tax benefit | (0.5) |  |  | (1.1) |  |  | (1.6) |
Total | $ | 17.4 |  |  | $ | 16.4 |  |  | $ | 14.2 |
Summary Of Value Of Non-Vested Share Awards Granted And Vested | The following table summarizes the value of time-based share awards granted and vested:
| Years Ended December 31,
| 2025 |  | 2024 |  | 2023
Weighted-average grant date fair value of share awards granted during the period (per share) | $ | 43.58 |  |  | $ | 69.89 |  |  | $ | 63.22 |
Total fair value of share awards vested during the period (in millions) | $ | 13.4 |  |  | $ | 30.0 |  |  | $ | 25.2 |
Summary Of Non-Vested Share Award Activity | The following table summarizes time-based share awards activity for the year ended December 31, 2025 (shares in thousands):
| Share Awards
| Awards |  | Weighted-Average Grant Date Fair Value
Share awards as of December 31, 2024 | 597 |  |  | $ | 60.58 |
Granted | 494 |  |  | $ | 43.58 |
Vested | (307) |  |  | $ | 56.80 |
Forfeited | (3) |  |  | $ | 58.00 |
Share awards as of December 31, 2025 | 781 |  |  | $ | 51.32 |
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions | The fair value of the performance awards is measured on the date of grant. The grant-date fair value per unit for the portion of the performance awards related to Performance-Based Objectives was equal to the closing price of the Company's stock on the grant date. The portion of these awards that were based on the Company's achievement of Market-based Objectives were valued at the date of grant using a Monte Carlo simulation with the following weighted average assumptions for the grants made in the years ended December 31, 2025, 2024 and 2023:
| Years Ended December 31,
| 2025 |  | 2024 |  | 2023
Expected price volatility | 48 | % |  | 49 | % |  | 60 | %
Expected dividend yield | — |  |  | — |  |  | — |
Risk-free interest rate | 3.90 | % |  | 4.31 | % |  | 4.32 | %
Schedule Of Summary Of Performance Award Activity | The following table summarizes the performance award activity for the year ended December 31, 2025 (shares in thousands):
| Awards(2) |  | Weighted Average Grant Date Fair Value Price(2)
Balance as of December 31, 2024 | 271 |  |  | $ | 61.69 |
Granted - Market-Based Objectives(1) | 236 |  |  | $ | 28.92 |
Balance as of December 31, 2025 | 507 |  |  | $ | 46.42 |
(1)The number of awards granted reflects the shares that would be granted if the target level of performance were to be achieved. The number of shares actually issued after considering forfeitures may range from zero to 472,000. (2)There were no forfeited or vested shares for the year ended December 31, 2025.

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 50 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/718-50/tableOfContent Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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