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Commitments and Contingencies, Contractual Obligations (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
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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 |

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