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Commitments and Contingencies, Contractual Obligations (Details) bbl in Millions, $ in Millions, BTU in Trillions | 12 Months Ended
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Dec. 31, 2016 USD ($) bbl BTU | Dec. 31, 2015 USD ($)
Scheduled maturities of debt obligations [Abstract] |  |
2017 | $ 2,577.2 |
2018 | 1,100.0 |
2019 | 1,500.0 |
2020 | 1,500.0 |
2021 | 575.0 |
Thereafter | 16,649.4 |
Total | 23,901.6 | $ 22,738.5
Estimated cash interest payments [Abstract] |  |
2017 | 1,073.3 |
2018 | 1,060.0 |
2019 | 999.5 |
2020 | 941.4 |
2021 | 883.6 |
Thereafter | 15,412.4 |
Total | 20,370.2 |
Operating lease obligations [Abstract] |  |
2017 | 57.1 |
2018 | 51.0 |
2019 | 45.8 |
2020 | 42.3 |
2021 | 35.9 |
Thereafter | 205.9 |
Total | 438.0 |
Natural Gas [Member] |  |
Estimated payment obligations: |  |
2017 | 912.5 |
2018 | 849.3 |
2019 | 695.8 |
2020 | 551.7 |
2021 | 458.2 |
Thereafter | 0.0 |
Total | $ 3,467.5 |
Underlying major volume commitments: |  |
2017 | BTU | 261 |
2018 | BTU | 245 |
2019 | BTU | 200 |
2020 | BTU | 156 |
2021 | BTU | 130 |
Thereafter | BTU | 0 |
Total | BTU | 992 |
NGLs [Member] |  |
Estimated payment obligations: |  |
2017 | $ 68.5 |
2018 | 50.8 |
2019 | 21.6 |
2020 | 0.0 |
2021 | 0.0 |
Thereafter | 0.0 |
Total | $ 140.9 |
Underlying major volume commitments: |  |
2017 | bbl | 6 |
2018 | bbl | 5 |
2019 | bbl | 2 |
2020 | bbl | 0 |
2021 | bbl | 0 |
Thereafter | bbl | 0 |
Total | bbl | 13 |
Crude Oil [Member] |  |
Estimated payment obligations: |  |
2017 | $ 421.7 |
2018 | 377.1 |
2019 | 325.6 |
2020 | 155.4 |
2021 | 28.0 |
Thereafter | 104.9 |
Total | $ 1,412.7 |
Underlying major volume commitments: |  |
2017 | bbl | 8 |
2018 | bbl | 7 |
2019 | bbl | 6 |
2020 | bbl | 3 |
2021 | bbl | 1 |
Thereafter | bbl | 2 |
Total | bbl | 27 |
Petrochemicals And Refined Products [Member] |  |
Estimated payment obligations: |  |
2017 | $ 202.5 |
2018 | 202.6 |
2019 | 106.2 |
2020 | 3.0 |
2021 | 0.0 |
Thereafter | 0.0 |
Total | $ 514.3 |
Underlying major volume commitments: |  |
2017 | bbl | 7 |
2018 | bbl | 7 |
2019 | bbl | 4 |
2020 | bbl | 0 |
2021 | bbl | 0 |
Thereafter | bbl | 0 |
Total | bbl | 18 |
Estimated Payment Obligations Other [Member] |  |
Estimated payment obligations: |  |
2017 | $ 9.5 |
2018 | 9.4 |
2019 | 9.4 |
2020 | 7.9 |
2021 | 4.6 |
Thereafter | 5.2 |
Total | 46.0 |
Service Payment Commitments [Member] |  |
Estimated payment obligations: |  |
2017 | 180.6 |
2018 | 107.8 |
2019 | 84.8 |
2020 | 58.0 |
2021 | 44.9 |
Thereafter | 109.1 |
Total | 585.2 |
Capital Expenditure Commitments [Member] |  |
Estimated payment obligations: |  |
2017 | 57.8 |
2018 | 0.0 |
2019 | 0.0 |
2020 | 0.0 |
2021 | 0.0 |
Thereafter | 0.0 |
Total | 57.8 |
EFS Midstream Contract with Producers [Member] |  |
Contractual obligation [Line Items] |  |
Contractual obligation | 270.0 | $ 270.0
Capital expenditures to date | $ 133.0 |
Contract term | 10 years | 10 years

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- Definition Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25336-109308 + Details
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- Definition Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25336-109308 + Details
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- Definition Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25336-109308 + Details
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- Definition Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25336-109308 + Details
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