Supplemental Oil and Gas Disclosures - Standardized Measure of Discounted Future Net Cash Flows (Parenthetical) (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Extractive Industries [Abstract]
Income taxes	$ 0	$ 0	$ (948,400,000)	[1]

[1] No future income taxes were estimated to be paid in 2016 and 2015 as our tax position has sufficient tax basis to offset estimated future taxes. State income taxes were disregarded due to immateriality.