v3.24.2
Business Acquisitions, Investments and Restructuring Charges - Acquisitions (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Purchase price:      
Cash used in acquisitions, net of cash acquired of $0.8 and $15.0, respectively $ 201.0 $ 987.7  
Excess purchase price allocated as follows:      
Goodwill 15,864.9   $ 15,834.5
Series of Individually Immaterial Business Acquisitions      
Purchase price:      
Cash acquired 0.8 15.0  
Cash used in acquisitions, net of cash acquired of $0.8 and $15.0, respectively 40.9 918.7  
Holdbacks 0.0 8.1  
Fair value, future minimum finance lease payments 0.0 0.5  
Total 40.9 927.3  
Allocated as follows:      
Accounts receivable 1.9 26.1  
Prepaid expenses 0.0 1.0  
Landfill development costs 0.0 0.5  
Property and equipment 20.3 160.3  
Operating right-of-use lease assets 0.0 1.7  
Other assets 0.0 0.1  
Parts and supplies 0.1 2.2  
Accounts payable (0.3) (5.3)  
Deferred revenue 0.0 (8.1)  
Environmental remediation liabilities 0.0 (5.6)  
Closure and post-closure liabilities 0.0 (10.5)  
Operating right-of-use lease liabilities 0.0 (1.7)  
Deferred income tax liabilities (1.3) (9.2)  
Other liabilities (0.2) (1.2)  
Fair value of tangible assets acquired and liabilities assumed 20.5 150.3  
Excess purchase price to be allocated 20.4 777.0  
Excess purchase price allocated as follows:      
Other intangible assets 4.2 103.0  
Goodwill 16.2 674.0  
Total allocated $ 20.4 $ 777.0