Commitments and Contingencies, Contractual Obligations (Details) bbl in Millions, $ in Millions, BTU in Trillions	12 Months Ended
	Dec. 31, 2015 USD ($) bbl BTU	Dec. 31, 2014 USD ($)
Scheduled maturities of debt obligations [Abstract]
2016	$ 1,864.1
2017	800.0
2018	1,100.0
2019	1,500.0
2020	1,500.0
Thereafter	15,974.4
Total	22,738.5	$ 21,389.2
Estimated cash interest payments [Abstract]
2016	1,053.0
2017	1,036.1
2018	975.6
2019	917.5
2020	859.7
Thereafter	16,892.2
Total	21,734.1
Operating lease obligations [Abstract]
2016	64.2
2017	58.4
2018	50.3
2019	44.7
2020	41.0
Thereafter	235.4
Total	494.0
Natural Gas [Member]
Estimated payment obligations:
2016	451.3
2017	215.6
2018	215.6
2019	143.8
2020	73.5
Thereafter	61.0
Total	$ 1,160.8
Underlying major volume commitments:
2016 | BTU	243
2017 | BTU	128
2018 | BTU	128
2019 | BTU	81
2020 | BTU	37
Thereafter | BTU	30
Total | BTU	647
NGLs [Member]
Estimated payment obligations:
2016	$ 319.3
2017	21.8
2018	23.9
2019	11.9
2020	0.0
Thereafter	0.0
Total	$ 376.9
Underlying major volume commitments:
2016 | bbl	30
2017 | bbl	3
2018 | bbl	4
2019 | bbl	2
2020 | bbl	0
Thereafter | bbl	0
Total | bbl	39
Crude Oil [Member]
Estimated payment obligations:
2016	$ 389.4
2017	17.9
2018	17.9
2019	16.3
2020	0.0
Thereafter	0.0
Total	$ 441.5
Underlying major volume commitments:
2016 | bbl	11
2017 | bbl	1
2018 | bbl	1
2019 | bbl	1
2020 | bbl	0
Thereafter | bbl	0
Total | bbl	14
Petrochemicals And Refined Products [Member]
Estimated payment obligations:
2016	$ 1,868.6
2017	52.8
2018	0.0
2019	0.0
2020	0.0
Thereafter	0.0
Total	$ 1,921.4
Underlying major volume commitments:
2016 | bbl	126
2017 | bbl	20
2018 | bbl	0
2019 | bbl	0
2020 | bbl	0
Thereafter | bbl	0
Total | bbl	146
Estimated Payment Obligations Other [Member]
Estimated payment obligations:
2016	$ 8.7
2017	6.9
2018	4.1
2019	4.1
2020	2.7
Thereafter	6.7
Total	33.2
Service Payment Commitments [Member]
Estimated payment obligations:
2016	184.5
2017	160.1
2018	91.8
2019	71.1
2020	43.7
Thereafter	134.7
Total	685.9
Capital Expenditure Commitments [Member]
Estimated payment obligations:
2016	113.9
2017	0.0
2018	0.0
2019	0.0
2020	0.0
Thereafter	0.0
Total	113.9
EFS Midstream Contract with Producers [Member]
Contractual obligation [Line Items]
Contractual obligation	$ 270.0
Contract term (in years)	10 years