v3.5.0.2
Business Acquisitions and Restructuring Charges - Acquisitions (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Purchase price:      
Cash used in acquisitions, net of cash acquired $ 30.7 $ 535.9  
Excess purchase price allocated as follows:      
Goodwill 11,163.1   $ 11,145.5
Waste Business Acquisitions [Member]      
Purchase price:      
Cash used in acquisitions, net of cash acquired 30.7 535.9  
Contingent consideration 0.0 75.8  
Holdbacks 3.3 2.6  
Fair value, future minimum lease payments 0.0 1.5  
Total 34.0 615.8  
Allocated as follows:      
Accounts receivable 0.5 36.1  
Landfill airspace 0.0 159.7  
Property and equipment 11.8 144.9  
Other assets 0.1 1.8  
Accounts payable 0.0 (7.1)  
Environmental remediation liabilities (0.1) (2.8)  
Closure and post-closure liabilities (0.1) (11.3)  
Other liabilities (0.7) (9.5)  
Fair value of tangible assets acquired and liabilities assumed 11.5 311.8  
Excess purchase price allocated as follows:      
Other intangible assets 5.3 10.1  
Goodwill 17.2 293.9  
Total allocated $ 22.5 $ 304.0