Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Cash Flows [Abstract]
Net income (loss)	$ (186,784)	$ 186,493
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, Depletion, Amortization and Accretion	536,786	496,561
Property impairments	222,529	25,316
Non-cash loss on derivatives	0	14,186
Stock-based compensation	16,441	12,107
Provision (benefit) for deferred income taxes	(50,012)	51,990
Dry hole costs	6,259	0
Net (gain) loss on sale of assets and other	4,502	(252)
Gain on extinguishment of debt	(17,631)	0
Other, net	2,911	3,683
Changes in assets and liabilities:
Accounts receivable	344,845	(78,027)
Inventories	22,417	(14,742)
Other current assets	(4,848)	(5,786)
Accounts payable trade	70,084	24,341
Revenues and royalties payable	(231,990)	6,282
Accrued liabilities and other	(70,274)	(563)
Other noncurrent assets and liabilities	(1,417)	(81)
Net cash provided by operating activities	663,818	721,508
Cash flows from investing activities
Exploration and development	(673,191)	(732,770)
Purchase of producing crude oil and natural gas properties	(19,258)	(15,849)
Purchase of other property and equipment	(14,923)	(4,951)
Proceeds from sale of assets	633	499
Net cash used in investing activities	(706,739)	(753,071)
Cash flows from financing activities
Credit facility borrowings	1,130,000	100,000
Repayment of credit facility	(450,000)	(100,000)
Redemption of Senior Notes	22,527	0
Repayment of other debt	(603)	(576)
Contributions from noncontrolling interests	21,254	38,242
Distributions to noncontrolling interests	(5,212)	(3,874)
Payments for Repurchase of Common Stock	(126,906)	0
Repurchase of restricted stock for tax withholdings	(6,454)	(20,622)
Payments of Dividends	(18,460)	0
Net cash provided by financing activities	521,092	13,170
Effect of exchange rate changes on cash	0	15
Net change in cash and cash equivalents	478,171	(18,378)
Cash and cash equivalents, at beginning of period	39,400	282,749
Cash and cash equivalents, at end of period	$ 517,571	$ 264,371