CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Operating Activities
Net loss including noncontrolling interest		$ (266,824)	$ (508,702)
Adjustments to reconcile net loss to net cash provided by continuing operations activities
(Income) loss from discontinued operations		(208)	4,862
Depreciation, depletion and amortization		198,278	306,102
Previously suspended exploration costs		717	97
Amortization of undeveloped leases		4,602	7,478
Accretion of asset retirement obligations		10,492	9,966
Impairment of assets		171,296	967,530
Deferred income tax benefit		(88,867)	(81,373)
Mark to market loss (gain) on contingent consideration		14,923	(59,151)
Mark to market loss (gain) on crude contracts		153,505	(358,302)
Long-term non-cash compensation		12,124	9,805
Net (increase) decrease in noncash working capital		(9,052)	107,827
Other operating activities, net		36,780	(13,482)
Net cash provided by continuing operations activities		237,766	392,657
Investing Activities
Property additions and dry hole costs		(240,545)	(354,834)
Property additions for King's Quay FPS		(17,734)	(21,296)
Proceeds from sales of property, plant and equipment		268,023	0
Net cash provided (required) by investing activities		9,744	(376,130)
Financing Activities
Borrowings on revolving credit facility		140,000	170,000
Repayment of revolving credit facility		(340,000)	0
Retirement of debt		(576,358)	(3,570)
Debt issuance, net of cost		541,980	(613)
Early redemption of debt cost		(34,177)	0
Distributions to noncontrolling interest		(36,006)	(32,399)
Cash dividends paid		(19,287)	(38,392)
Withholding tax on stock-based incentive awards		(3,794)	(7,094)
Capital lease obligation payments		(178)	(168)
Net cash (required) provided by financing activities		(327,820)	87,764
Cash Flows from Discontinued Operations
Operating activities	[1]	0	(1,202)
Investing activities	[1]	0	4,494
Net cash provided by discontinued operations	[1]	0	3,292
Effect of exchange rate changes on cash and cash equivalents		574	(3,298)
Net (decrease) increase in cash and cash equivalents		(79,736)	100,993
Cash and cash equivalents at beginning of period		310,606	306,760
Cash and cash equivalents at end of period		$ 230,870	$ 407,753

[1] Net cash provided by discontinued operations is not part of the cash flow reconciliation. See Notes to Consolidated Financial Statements, page 7.