v2.4.0.6
Business Acquisitions, Disposition of Assets, Asset Impairments and Restructuring Charges (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Purchase price:    
Cash used in acquisitions, net of cash acquired $ 42.6 $ 58.9
Acquired various solid waste businesses [Member]
   
Purchase price:    
Cash used in acquisitions, net of cash acquired 42.6 58.9
Fair value of operations surrendered 48.3 44.0
Holdbacks 1.7 0.6
Total 92.6 103.5
Allocated as follows:    
Working capital 7.1 5.1
Property and equipment 44.5 40.8
Other liabilities, net (7.8) (6.1)
Value of assets acquired and liabilities assumed 43.8 39.8
Excess purchase price to be allocated 48.8 63.7
Excess purchase price to be allocated as follows:    
Other intangible assets 33.1 21.9
Goodwill 15.7 41.8
Total allocated $ 48.8 $ 63.7