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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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Amount of investment banking, consulting and other acquisition-related costs costs in relation to business combinations.

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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

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