v3.24.0.1
Goodwill and Other Intangible Assets, Net (Finite-lived Intangible Assets) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Gross Intangible Assets    
Beginning Balance $ 1,158.4 $ 1,016.8
Acquisitions 203.9 132.9
Adjustments and Other (677.0) 8.7
Ending Balance 685.3 1,158.4
Accumulated Amortization    
Beginning Balance (811.2) (757.3)
Additions Charged to Expense (66.3) (53.9)
Adjustments and Other 688.4 0.0
Ending Balance (189.1) (811.2)
Other Intangible Assets, Net 496.2 347.2
Customer relationships    
Gross Intangible Assets    
Beginning Balance 1,013.5 898.4
Acquisitions 197.3 109.2
Adjustments and Other (579.1) 5.9
Ending Balance 631.7 1,013.5
Accumulated Amortization    
Beginning Balance (709.1) (666.8)
Additions Charged to Expense (53.7) (42.3)
Adjustments and Other 597.1 0.0
Ending Balance (165.7) (709.1)
Other Intangible Assets, Net 466.0 304.4
Non-compete agreements    
Gross Intangible Assets    
Beginning Balance 67.9 60.4
Acquisitions 4.2 7.7
Adjustments and Other (41.7) (0.2)
Ending Balance 30.4 67.9
Accumulated Amortization    
Beginning Balance (50.9) (44.6)
Additions Charged to Expense (6.5) (6.3)
Adjustments and Other 41.7 0.0
Ending Balance (15.7) (50.9)
Other Intangible Assets, Net 14.7 17.0
Other intangible assets    
Gross Intangible Assets    
Beginning Balance 77.0 58.0
Acquisitions 2.4 16.0
Adjustments and Other (56.2) 3.0
Ending Balance 23.2 77.0
Accumulated Amortization    
Beginning Balance (51.2) (45.9)
Additions Charged to Expense (6.1) (5.3)
Adjustments and Other 49.6 0.0
Ending Balance (7.7) (51.2)
Other Intangible Assets, Net $ 15.5 $ 25.8