v2.4.0.6
Business Acquisitions and Restructuring Charges (Details) (Acquired various solid waste businesses [Member], USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Mar. 31, 2012
Acquired various solid waste businesses [Member]
   
Purchase price:    
Cash used in acquisitions, net of cash acquired $ 10.2 $ 19.7
Holdbacks 1.0 0
Total 11.2 19.7
Allocated as follows:    
Working capital 0.2 (0.9)
Property and equipment 2.4 4.4
Other liabilities, net (0.4) 0
Value of assets acquired and liabilities assumed 2.2 3.5
Excess purchase price to be allocated 9.0 16.2
Excess purchase price allocated as follows:    
Other intangible assets 1.0 5.8
Goodwill 8.0 10.4
Total allocated $ 9.0 $ 16.2