Description of Business and Basis of Presentation - Restatement Table - Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	[1]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accumulated depreciation	$ 1,426,801	$ 1,055,207
Net property, plant and equipment	4,521,347	4,571,443
Total assets	6,956,459	6,955,241
Accrued liabilities	149,268	170,864
Total current liabilities	212,742	241,058
Deferred income taxes	5,332	45,656
Total long-term liabilities	2,982,282	2,580,324
Total liabilities	3,195,024	2,821,382
Common units	1,149,840	1,260,195
Total partners' capital	1,149,840	1,382,704
Noncontrolling interests	2,611,595	2,751,155
Total equity and partners' capital	3,761,435	4,133,859
Total liabilities, equity and partners' capital	6,956,459	$ 6,955,241
As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accumulated depreciation	1,165,607
Net property, plant and equipment	4,782,541
Total assets	7,217,653
Accrued liabilities	149,669
Total current liabilities	213,143
Deferred income taxes	5,869
Total long-term liabilities	2,982,819
Total liabilities	3,195,962
Common units	1,244,765
Total partners' capital	1,244,765
Noncontrolling interests	2,776,926
Total equity and partners' capital	4,021,691
Total liabilities, equity and partners' capital	7,217,653
Adjustments [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accumulated depreciation	261,194
Net property, plant and equipment	(261,194)
Total assets	(261,194)
Accrued liabilities	(401)
Total current liabilities	(401)
Deferred income taxes	(537)
Total long-term liabilities	(537)
Total liabilities	(938)
Common units	(94,925)
Total partners' capital	(94,925)
Noncontrolling interests	(165,331)
Total equity and partners' capital	(260,256)
Total liabilities, equity and partners' capital	$ (261,194)

[1] Financial information has been recast to include the financial position and results attributable to the DBJV system. See Note 1 and Note 2.