Operating Expenses (Schedule of Acquisition Related and Integration Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Acquisition-related and integration costs	$ 29.0	$ 216.1	$ 37.3
IAA
Business Acquisition [Line Items]
Financing	0.0	30.0	0.0
Severance	13.8	41.1	0.0
Integration	11.7	34.5	0.0
Acceleration of share-based payments expense	1.0	6.8	0.0
Legal	0.0	12.3	7.8
Investment banking, consulting and other acquisition-related costs	1.2	68.8	13.5
Settlement of pre-existing contractual arrangement	0.0	16.3	0.0
Acquisition-related and integration costs	27.7	209.8	21.3
Other acquisitions
Business Acquisition [Line Items]
Acquisition-related and integration costs	$ 1.3	$ 6.3	$ 16.0