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Commitments and Contingencies, Contractual Obligations (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Scheduled maturities of debt obligations [Abstract]    
2014 $ 1,125.0  
2015 1,300.0  
2016 750.0  
2017 800.0  
2018 350.0  
Thereafter 13,032.7  
Total 17,357.7 16,179.3
Estimated cash interest payments [Abstract]    
2014 860.9  
2015 796.6  
2016 772.6  
2017 758.4  
2018 705.1  
Thereafter 14,198.4  
Total 18,092.0  
Operating lease obligations [Abstract]    
2014 42.4  
2015 41.2  
2016 38.2  
2017 35.4  
2018 30.7  
Thereafter 144.9  
Total 332.8  
Natural Gas [Member]
    
Estimated payment obligations:    
2014 1,088.9  
2015 915.8  
2016 844.1  
2017 472.0  
2018 472.0  
Thereafter 579.2  
Total 4,372.0  
Underlying major volume commitments:    
2014 282,000,000  
2015 237,000,000  
2016 219,000,000  
2017 128,000,000  
2018 128,000,000  
Thereafter 149,000,000  
Total 1,143,000,000  
NGLs [Member]
    
Estimated payment obligations:    
2014 1,917.7  
2015 214.3  
2016 15.1  
2017 0  
2018 0  
Thereafter 0  
Total 2,147.1  
Underlying major volume commitments:    
2014 38,000,000  
2015 4,000,000  
2016 0  
2017 0  
2018 0  
Thereafter 0  
Total 42,000,000  
Crude Oil [Member]
    
Estimated payment obligations:    
2014 1,159.5  
2015 0  
2016 0  
2017 0  
2018 0  
Thereafter 0  
Total 1,159.5  
Underlying major volume commitments:    
2014 12,000,000  
2015 0  
2016 0  
2017 0  
2018 0  
Thereafter 0  
Total 12,000,000  
Petrochemicals And Refined Products [Member]
    
Estimated payment obligations:    
2014 2,058.0  
2015 1,123.7  
2016 693.5  
2017 68.4  
2018 0  
Thereafter 0  
Total 3,943.6  
Underlying major volume commitments:    
2014 22,000,000  
2015 12,000,000  
2016 7,000,000  
2017 1,000,000  
2018 0  
Thereafter 0  
Total 42,000,000  
Estimated Payment Obligations Other [Member]
    
Estimated payment obligations:    
2014 80.0  
2015 8.0  
2016 7.1  
2017 6.5  
2018 3.8  
Thereafter 11.6  
Total 117.0  
Service Payment Commitments [Member]
    
Estimated payment obligations:    
2014 201.4  
2015 199.6  
2016 180.8  
2017 154.7  
2018 86.5  
Thereafter 207.9  
Total 1,030.9  
Capital Expenditure Commitments [Member]
    
Estimated payment obligations:    
2014 1,137.5  
2015 0  
2016 0  
2017 0  
2018 0  
Thereafter 0  
Total $ 1,137.5