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Business Acquisitions, Disposition of Assets, Asset Impairments and Restructuring Charges (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Purchase price:      
Cash used in acquisitions, net of cash acquired $ 68.7 $ 95.3 $ 42.6
Excess purchase price to be allocated as follows:      
Goodwill 10,724.1 10,690.0 10,647.0
Acquired various solid waste businesses [Member]
     
Purchase price:      
Cash used in acquisitions, net of cash acquired 68.7 95.3  
Holdbacks 8.4 0.2  
Total 77.1 95.5  
Allocated as follows:      
Working capital 1.0 4.0  
Property and equipment 18.2 29.1  
Other liabilities, net (4.3) (5.8)  
Fair value of assets acquired and liabilities assumed 14.9 27.3  
Excess purchase price to be allocated 62.2 68.2  
Excess purchase price to be allocated as follows:      
Other intangible assets 23.2 17.1  
Goodwill 39.0 51.1  
Total allocated $ 62.2 $ 68.2