v3.5.0.2
Segment Reporting - Financial Information by Regional Segment (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Segment Reporting Information [Line Items]          
Gross Revenue $ 2,917.6 $ 2,833.9 $ 8,487.1 $ 8,244.0  
Intercompany Revenue (508.3) (489.9) (1,478.6) (1,419.2)  
Total revenue 2,409.3 2,344.0 7,008.5 6,824.8  
Depreciation, Amortization, Depletion and Accretion 272.1 266.8 805.0 785.5  
Operating Income (Loss) 417.9 442.9 1,145.6 1,204.9  
Capital Expenditures 226.7 232.8 738.7 732.0  
Total Assets 20,661.7 20,791.8 20,661.7 20,791.8 $ 20,535.9
Group 1 | Operating Segments          
Segment Reporting Information [Line Items]          
Gross Revenue 1,347.9 1,295.8 3,907.9 3,764.6  
Intercompany Revenue (269.3) (259.5) (778.7) (753.4)  
Total revenue 1,078.6 1,036.3 3,129.2 3,011.2  
Depreciation, Amortization, Depletion and Accretion 105.9 101.2 313.0 295.6  
Operating Income (Loss) 235.1 220.8 670.2 642.9  
Capital Expenditures 119.3 125.0 337.8 318.7  
Total Assets 9,199.3 9,341.5 9,199.3 9,341.5  
Group 2 | Operating Segments          
Segment Reporting Information [Line Items]          
Gross Revenue 1,516.5 1,492.6 4,433.4 4,347.6  
Intercompany Revenue (235.5) (227.0) (689.8) (655.9)  
Total revenue 1,281.0 1,265.6 3,743.6 3,691.7  
Depreciation, Amortization, Depletion and Accretion 136.2 139.1 405.3 408.5  
Operating Income (Loss) 261.8 239.0 748.4 717.4  
Capital Expenditures 96.4 89.2 259.1 266.7  
Total Assets 9,908.9 9,929.2 9,908.9 9,929.2  
Corporate Entities | Corporate Entities          
Segment Reporting Information [Line Items]          
Gross Revenue 53.2 45.5 145.8 131.8  
Intercompany Revenue (3.5) (3.4) (10.1) (9.9)  
Total revenue 49.7 42.1 135.7 121.9  
Depreciation, Amortization, Depletion and Accretion 30.0 26.5 86.7 81.4  
Operating Income (Loss) (79.0) (16.9) (273.0) (155.4)  
Capital Expenditures 11.0 18.6 141.8 146.6  
Total Assets $ 1,553.5 $ 1,521.1 $ 1,553.5 $ 1,521.1