v3.25.4

Share-based compensation - Narrative (Details) - USD ($) $ in Millions | 5 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2025 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Jun. 23, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  | $ 14 | $ 0 | $ 0 |
Related Party |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  | $ 3 |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Share-based payment arrangement, award vesting period |  | 2 years |  |  |
Unrecognized compensation cost, excluding options | $ 4 | $ 4 |  |  |
Unrecognized compensation expense, amortization, weighted average period |  | 2 years |  |  |
Granted (in shares) |  | 118,632 |  |  |
Number of common shares issued upon conversion of equity award (in shares) | 1 | 1 |  |  |
Restricted Stock Units (RSUs) | Minimum | Share-Based Payment Arrangement, Tranche One |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Share-based payment arrangement, award vesting period |  | 1 year |  |  |
Restricted Stock Units (RSUs) | Maximum | Share-Based Payment Arrangement, Tranche One |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Share-based payment arrangement, award vesting period |  | 3 years |  |  |
Performance Shares |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Share-based payment arrangement, award vesting period |  | 3 years |  |  |
Unrecognized compensation cost, excluding options | $ 35 | $ 35 |  |  |
Unrecognized compensation expense, amortization, weighted average period |  | 2 years |  |  |
Granted (in shares) |  | 656,544 |  |  |
Expected dividend yield |  | 0.00% |  |  |
Performance Shares | 2023 Performance Shares, Earnings Per Share |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Plan modification, target weight | 50.00% |  |  |  |
Performance Shares | 2023 Performance Shares, Return On Invested Capital |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Plan modification, target weight | 50.00% |  |  |  |
Performance Shares | 2024 Performance Shares, Earnings Per Share |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Plan modification, target weight | 50.00% |  |  |  |
Performance Shares | 2024 Performance Shares, Total Shareholder Return |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Plan modification, target weight | 50.00% |  |  |  |
Employee Stock Option |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Share-based payment arrangement, award vesting period |  | 5 years |  |  |
Unrecognized compensation cost, options | $ 2 | $ 2 |  |  |
Unrecognized compensation expense, amortization, weighted average period |  | 2 years |  |  |
Expected dividend yield |  | 0.00% |  |  |
Share-based payment award, contractual term |  | 10 years |  |  |
2025 Omnibus Incentive Plan |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  | 25,500,000

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