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Share-Based Compensation - Schedule of Share-Based Payment Arrangement Activity Expensed (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Cost (reversal) of employee share-based compensation included in income, before income tax | $ 12.4 | $ 13.8
Income tax benefit | (3.0) | (3.3)
Total cost of share-based compensation, after tax | 9.4 | 10.5
Stock options |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Cost (reversal) of employee share-based compensation included in income, before income tax | 0.1 | 0.4
Restricted stock units |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Cost (reversal) of employee share-based compensation included in income, before income tax | 4.6 | 4.1
Restricted stock awards |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Cost (reversal) of employee share-based compensation included in income, before income tax | 0.2 | 0.4
Performance based restricted share unit awards |  |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |
Cost (reversal) of employee share-based compensation included in income, before income tax | $ 7.5 | $ 8.9

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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