CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Operating Activities
Net (loss) income including noncontrolling interest		$ (833,102)	$ 196,011
Adjustments to reconcile net (loss) income to net cash (required) provided by continuing operations activities:
Loss (income) from discontinued operations		6,129	(74,264)
Depreciation, depletion and amortization		537,548	493,708
Previously suspended exploration costs		7,677	12,901
Amortization of undeveloped leases		14,770	15,150
Accretion of asset retirement obligations		20,435	19,237
Impairment of assets		987,146	0
Noncash restructuring expense		17,565	0
Deferred income tax (benefit) expense		(167,902)	18,001
Mark to market (gain) loss on contingent consideration		(43,529)	28,890
Mark to market (gain) loss on crude contracts		(173,848)	(50,831)
Long-term non-cash compensation		22,760	44,755
Net decrease (increase) in noncash operating working capital		1,335	(5,366)
Other operating activities, net		(27,605)	(42,761)
Net cash provided by continuing operations activities		369,379	655,431
Investing Activities
Property additions and dry hole costs		(537,601)	(645,169)
Property additions for King's Quay FPS		(51,635)	0
Acquisition of oil and gas properties		0	(1,226,261)
Proceeds from sales of property, plant and equipment		0	16,816
Net cash required by investing activities		(589,236)	(1,854,614)
Financing Activities
Borrowings on revolving credit facility		370,000	1,075,000
Repayment of revolving credit facility		(200,000)	0
Cash dividends paid		(57,590)	(85,503)
Distributions to noncontrolling interest		(32,400)	(68,776)
Early retirement of debt		(12,225)	0
Withholding tax on stock-based incentive awards		(7,247)	(6,991)
Debt issuance, net of cost		(613)	0
Proceeds from term loan and other loans		371	500,000
Capital lease obligation payments		(336)	(335)
Repurchase of common stock		0	(299,924)
Net cash provided by financing activities		59,960	1,113,471
Cash Flows from Discontinued Operations
Operating activities	[1]	(1,202)	122,272
Investing activities	[1]	4,494	(49,798)
Financing activities	[1]	0	(4,914)
Net cash provided by discontinued operations	[1]	3,292	67,560
Cash transferred from discontinued operations to continuing operations		0	48,565
Effect of exchange rate changes on cash and cash equivalents		(1,358)	3,268
Net increase (decrease) in cash and cash equivalents		(161,255)	(33,879)
Cash and cash equivalents at beginning of period		306,760	359,923
Cash and cash equivalents at end of period		$ 145,505	$ 326,044

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