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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2023
Share-Based Payment Arrangement [Abstract] |
Schedule of Stock-Based Compensation Expense | A summary of the Company's stock-based compensation expense is presented in the following table:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(in millions) | 2023 |  | 2022 |  | 2023 |  | 2022
PRSU expense | $ | 5.9 |  |  | $ | 6.4 |  |  | $ | 18.8 |  |  | $ | 22.6 |
Option expense | 0.5 |  |  | 0.5 |  |  | 1.6 |  |  | 0.5 |
RSU expense | 5.3 |  |  | 5.4 |  |  | 15.5 |  |  | 16.0 |
Total stock-based compensation expense | $ | 11.7 |  |  | $ | 12.3 |  |  | $ | 35.9 |  |  | $ | 39.1 |

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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