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Long-Term Incentive Employee Compensation (Tables) | 12 Months Ended
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Dec. 31, 2024
Share-Based Payment Arrangement [Abstract] |
Long-Term Incentive Employee Compensation Costs | LTIP costs are primarily recorded within General and administrative expenses in our Consolidated Statements of Operations, at their grant date fair value over the requisite service period (typically three years) on a straight-line basis and are reduced by forfeitures as they occur. The following table summarizes our share-based compensation expense associated with our LTIP awards.
For the Year Ended December 31 | 2024 |  | 2023 |  | 2022
Equity-based awards | $ | 25.9 |  |  | $ | 20.2 |  |  | $ | 18.1 |
Liability-based awards | 2.6 |  |  | 1.7 |  |  | 1.0 |
Total share-based compensation expense | $ | 28.5 |  |  | $ | 21.9 |  |  | $ | 19.1 |
The income tax benefit realized during 2024, 2023 and 2022 associated with exercised stock options and vested restricted stock was $1.8, $0.9 and $2.4, respectively.
Rollforward of Outstanding Restricted Stock | The table below provides a rollforward of our outstanding RSUs and PSUs.
| 2024 |  | 2023 |  | 2022
Restricted Stock and Performance Units | Shares |  | Weighted Average Grant Date Fair Value |  | Shares |  | Weighted Average Grant Date Fair Value |  | Shares |  | Weighted Average Grant Date Fair Value
Outstanding as of January 1 | 0.7 |  |  | $ | 88.40 |  |  | 0.7 |  |  | $ | 76.36 |  |  | 0.7 |  |  | $ | 71.21 |
Granted | 0.4 |  |  | 135.01 |  |  | 0.3 |  |  | 99.33 |  |  | 0.3 |  |  | 77.72 |
Performance adjustment | 0.1 |  |  | 98.67 |  |  | — |  |  | — |  |  | — |  |  | — |
Vested and issued | (0.3) |  |  | 91.13 |  |  | (0.2) |  |  | 69.91 |  |  | (0.3) |  |  | 66.20 |
Forfeited | (0.1) |  |  | 108.62 |  |  | (0.1) |  |  | 77.20 |  |  | — |  |  | — |
Outstanding as of December 31 | 0.8 |  |  | $ | 109.06 |  |  | 0.7 |  |  | $ | 88.40 |  |  | 0.7 |  |  | $ | 76.36 |
Vested pending issuance | 0.1 |  |  | $ | 76.51 |  |  | 0.1 |  |  | $ | 98.67 |  |  | 0.1 |  |  | $ | 63.88 |
Number of Outstanding Equity Settled RSUs, Cash Settled RSUs and RSAs | The table below provides the number of our outstanding shares by award type. Cash-settled RSUs and PSUs outstanding were not material.
As of December 31 | 2024 |  | 2023 |  | 2022
Equity-settled RSUs | 0.4 |  |  | 0.4 |  |  | 0.4 |
Equity-settled PSUs | 0.3 |  |  | 0.3 |  |  | 0.2 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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