Description of Business and Basis of Presentation - Restatement Table - Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	[1]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accumulated depreciation	$ 1,330,802	$ 1,055,207
Net property, plant and equipment	4,531,919	4,571,443
Total assets	6,916,001	6,955,241
Accrued liabilities	138,752	170,864
Total current liabilities	222,766	241,058
Deferred income taxes	6,540	45,656
Total long-term liabilities	2,897,347	2,580,324
Total liabilities	3,120,113	2,821,382
Common units	1,170,275	1,260,195
Total partners' capital	1,170,275	1,382,704
Noncontrolling interests	2,625,613	2,751,155
Total equity and partners' capital	3,795,888	4,133,859
Total liabilities, equity and partners' capital	6,916,001	$ 6,955,241
As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accumulated depreciation	1,072,799
Net property, plant and equipment	4,789,922
Total assets	7,174,004
Accrued liabilities	138,985
Total current liabilities	222,999
Deferred income taxes	7,037
Total long-term liabilities	2,897,844
Total liabilities	3,120,843
Common units	1,264,012
Total partners' capital	1,264,012
Noncontrolling interests	2,789,149
Total equity and partners' capital	4,053,161
Total liabilities, equity and partners' capital	7,174,004
Adjustments [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accumulated depreciation	258,003
Net property, plant and equipment	(258,003)
Total assets	(258,003)
Accrued liabilities	(233)
Total current liabilities	(233)
Deferred income taxes	(497)
Total long-term liabilities	(497)
Total liabilities	(730)
Common units	(93,737)
Total partners' capital	(93,737)
Noncontrolling interests	(163,536)
Total equity and partners' capital	(257,273)
Total liabilities, equity and partners' capital	$ (258,003)

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