v2.4.0.6
Landfill and Environmental Costs (Details 1) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Activity in asset retirement obligation liabilities, which includes liabilities for final capping, closure and post-closure    
Asset retirement obligation liabilities, beginning of year $ 1,052.4 $ 1,037.0
Non-cash additions 8.1 8.2
Acquisitions/divestitures and other adjustments 0 (2.5)
Asset retirement obligation adjustments 0.4 4.6
Payments (26.7) (11.8)
Accretion expense 19.2 19.7
Asset retirement obligation liabilities, end of period 1,053.4 1,055.2
Less: Current portion (107.7) (89.0)
Long-term portion $ 945.7 $ 966.2