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Changes in Accumulated Other Comprehensive Income by Component (Details 1) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Reclassifications out of Accumulated Other Comprehensive Income [Line Items]                      
Revenue $ 2,141.5 $ 2,165.4 $ 2,111.7 $ 1,998.6 $ 2,028.3 $ 2,046.9 $ 2,060.6 $ 1,982.4 $ 8,417.2 $ 8,118.3 $ 8,192.9
Cost of operations                 5,234.7 5,005.7 4,865.1
Interest expense                 (360.0) (388.5) (440.2)
Selling, general and administrative                 853.8 820.9 825.4
Income before income taxes                 851.2 823.9 906.3
Tax expense                 (262.1) (251.8) (317.4)
Net income 236.7 171.1 56.4 124.9 127.0 152.8 149.5 142.8 589.1 572.1 588.9
Reclassification out of Accumulated Other Comprehensive Income [Member]
                     
Reclassifications out of Accumulated Other Comprehensive Income [Line Items]                      
Net income                 2.3 3.6 (1.3)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Gains (Losses) on Cash Flow Hedges [Member]
                     
Reclassifications out of Accumulated Other Comprehensive Income [Line Items]                      
Income before income taxes                 0.4 3.9 (8.3)
Tax expense                 (0.2) (1.6) 3.4
Net income                 0.2 2.3 (4.9)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Gains (Losses) on Cash Flow Hedges [Member] | Recycling commodity hedges [Member]
                     
Reclassifications out of Accumulated Other Comprehensive Income [Line Items]                      
Revenue                 0.2 3.3 (7.8)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Gains (Losses) on Cash Flow Hedges [Member] | Fuel hedges [Member]
                     
Reclassifications out of Accumulated Other Comprehensive Income [Line Items]                      
Cost of operations                 2.9 2.8 0.9
Reclassification out of Accumulated Other Comprehensive Income [Member] | Gains (Losses) on Cash Flow Hedges [Member] | Interest rate contracts [Member]
                     
Reclassifications out of Accumulated Other Comprehensive Income [Line Items]                      
Interest expense                 (2.7) (2.2) (1.4)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
                     
Reclassifications out of Accumulated Other Comprehensive Income [Line Items]                      
Selling, general and administrative                 3.5 2.2 6.1
Tax expense                 (1.4) (0.9) (2.5)
Net income                 $ 2.1 $ 1.3 $ 3.6