Other (Notes)	12 Months Ended
Dec. 31, 2017
Other Income and Expenses [Abstract]
Other	OTHER During 2017 and 2016, we capitalized $0.2 million and $1.4 million, respectively, of project feasibility costs, which had been expensed in prior periods in Other expense, net, upon determining that the project was probable of development. The Advances for construction costs on the Consolidated Balance Sheet are associated with advances received from third parties related to construction costs on the Atlantic Sunrise and Dalton projects. This balance increases as we receive additional advances. After construction of the respective projects are completed, the related liabilities will be reclassified to Long-Term Debt and reduced by payments we make to the third parties under terms of the applicable lease agreements. In the third quarter of 2017, the advances received from a third party related to construction costs on the Dalton lateral was reclassified to Long-Term Debt on our Consolidated Balance Sheet.

Other (Notes)

12 Months Ended

Dec. 31, 2017

Other Income and Expenses [Abstract]

OTHER

During 2017 and 2016, we capitalized $0.2 million and $1.4 million, respectively, of project feasibility costs, which had been expensed in prior periods in Other expense, net, upon determining that the project was probable of development.

The Advances for construction costs on the Consolidated Balance Sheet are associated with advances received from third parties related to construction costs on the Atlantic Sunrise and Dalton projects. This balance increases as we receive additional advances. After construction of the respective projects are completed, the related liabilities will be reclassified to Long-Term Debt and reduced by payments we make to the third parties under terms of the applicable lease agreements. In the third quarter of 2017, the advances received from a third party related to construction costs on the Dalton lateral was reclassified to Long-Term Debt on our Consolidated Balance Sheet.