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Operating Expenses (Schedule of Acquisition Related and Integration Costs) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Business Acquisition [Line Items] |  |  |
Total acquisition-related and integration costs | $ 216.1 | $ 37.3 | $ 30.2
IAA |  |  |
Business Acquisition [Line Items] |  |  |
Financing | 30.0 | 0.0 | 0.0
Severance | 41.1 | 0.0 | 0.0
Integration | 34.5 | 0.0 | 0.0
Acceleration of share-based payments expense | 6.8 | 0.0 | 0.0
Legal | 12.3 | 7.8 | 0.0
Investment banking, consulting and other acquisition-related costs | 68.8 | 13.5 | 0.0
Settlement of pre-existing contractual arrangement | 16.3 | 0.0 | 0.0
Total acquisition-related and integration costs | 209.8 | 21.3 | 0.0
Other acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Total acquisition-related and integration costs | $ 6.3 | $ 16.0 | $ 30.2

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-5 + Details
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- Definition Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs. + References No definition available. + Details
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