Supplemental Disclosure of Oil and Natural Gas Operations (Unaudited) - Schedule of Standardized Measure of Discounted Future Net Cash Flows (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Extractive Industries [Abstract]
Future cash inflows	$ 20,409,082	$ 22,861,246	$ 15,421,590
Future development costs	(2,280,552)	(2,459,587)	(2,181,447)
Future production costs	(6,240,997)	(5,944,022)	(4,536,530)
Future income tax expenses	(1,485,523)	(2,061,409)	(1,102,385)
Future net cash flows	10,402,010	12,396,228	7,601,228
10% discount to reflect timing of cash flows	(5,439,514)	(6,502,326)	(4,215,321)
Standardized measure of discounted future net cash flows	$ 4,962,496	$ 5,893,902	$ 3,385,907	$ 1,304,091