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Share-based Payments (Compensation Costs) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Total compensation costs related to share based payments | $ 57.5 | $ 44.5 | $ 33.9
Selling, general and administrative: |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Stock option compensation expense | 7.7 | 12.2 | 8.4
Equity-classified share units | 32.0 | 22.0 | 12.6
Liability-classified share units | 2.5 | 0.0 | (0.6)
Employee share purchase plan | 4.7 | 2.8 | 2.7
Total compensation costs related to share based payments | 46.9 | 37.0 | 23.1
Acquisition-related and integration costs: |  |  |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |
Acceleration of share-based payments expense | 6.8 | 0.0 | 0.0
Share-based continuing employment costs | 3.8 | 7.5 | 10.8
Total compensation costs related to share based payments | $ 10.6 | $ 7.5 | $ 10.8

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- Definition For transactions that are recognized separately from the acquisition of assets and assumptions of liabilities in the business combination, such as related to pre-existing relationships with the acquiree, this element represents the disclosure of the amount of acquisition related share based continuing employment costs which have been expensed. + References No definition available. + Details
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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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- Definition Amount of noncash expense for option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
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