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Stock-Based Compensation | 3 Months Ended
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Mar. 31, 2025
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation | Stock-Based Compensation: We issue various long-term incentive awards, including performance share units, restricted stock units and stock appreciation rights under the Lennox International Inc. 2019 Equity and Incentive Plan, as it may be amended and restated from time to time. Stock-based compensation expense related to continuing operations is included in Selling, general and administrative expenses in the accompanying Consolidated Statements of Operations as follows (in millions):
| For the Three Months Ended March 31, |  |
| 2025 |  | 2024 |  |  |  |
Stock-based compensation expense | $ | 6.3 |  |  | $ | 6.6 |  |  |  |  |
Equity awards granted in February 2025 were as follows:
| Shares |  | Weighed-Average Grant Date Fair Value per Share |  |  |  |
Performance Share Units | 17,427 |  |  | $ | 560.53 |  |  |  |  |
Restricted Stock Units | 19,338 |  |  | $ | 560.53 |  |  |  |  |
Stock Appreciation Rights | 37,306 |  |  | $ | 161.50 |  |  |  |  |

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