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Share-Based Compensation - Compensation Expense for Share-Based Awards (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total share-based compensation expense | $ 19.4 | $ 15.3
Income tax benefit | (4.8) | (3.8)
Share-based compensation expense, net of tax benefit | 14.6 | 11.5
Restricted Stock |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total share-based compensation expense | 14.0 | 11.9
Performance Units |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total share-based compensation expense | $ 5.4 | $ 3.4

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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