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Operating Expenses (Schedule of Acquisition Related and Integration Costs) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Business Acquisition [Line Items] |  |  |  |
Total acquisition-related and integration costs | $ 6.0 | $ 23.1 | $ 22.9 | $ 195.6
IAA acquisition |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Financing | 0.0 | 0.0 | 0.0 | 30.0
Severance | 2.9 | 6.6 | 10.6 | 29.3
Integration | 2.7 | 11.7 | 9.7 | 28.8
Acceleration of share-based payments expense | 0.1 | 0.6 | 1.0 | 6.5
Legal | 0.0 | 0.1 | 0.0 | 12.2
Investment banking, consulting and other acquisition-related costs | 0.1 | 2.9 | 1.2 | 67.2
Settlement of pre-existing contractual arrangement | 0.0 | 0.0 | 0.0 | 16.3
Total acquisition-related and integration costs | 5.8 | 21.9 | 22.5 | 190.3
Other acquisitions |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total acquisition-related and integration costs | $ 0.2 | $ 1.2 | $ 0.4 | $ 5.3

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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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