CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
Operating Activities
Net income (loss) including noncontrolling interest		$ (156,555)	$ (1,099,710)
Adjustments to reconcile net income (loss) to net cash provided by continuing operations activities
Loss from discontinued operations		600	6,907
Depreciation, depletion and amortization		615,372	769,151
Dry hole and previously suspended exploration costs		17,899	8,255
Amortization of undeveloped leases		13,872	21,951
Accretion of asset retirement obligations		34,854	31,213
Impairment of assets		171,296	1,206,284
Noncash restructuring expense		0	17,565
Deferred income tax (benefit) expense		(65,149)	(231,748)
Mark to market loss (gain) on contingent consideration		105,111	(29,476)
Mark to market loss (gain) on derivative instruments		228,497	(104,463)
Long-term non-cash compensation		42,080	35,200
Net decrease (increase) in noncash working capital		117,330	(26,261)
Other operating activities, net		(33,924)	(26,837)
Net cash provided by continuing operations activities		1,091,283	578,031
Investing Activities
Property additions and dry hole costs		(564,230)	(648,725)
Property additions for King's Quay FPS		(17,734)	(74,936)
Proceeds from sales of property, plant and equipment		270,038	0
Net cash required by investing activities		(311,926)	(723,661)
Financing Activities
Borrowings on revolving credit facility		165,000	450,000
Repayment of revolving credit facility		(365,000)	(250,000)
Retirement of debt		(726,358)	(12,225)
Debt issuance, net of cost		541,913	(613)
Early redemption of debt cost		(36,756)	0
Distributions to noncontrolling interest		(100,880)	(43,673)
Cash dividends paid		(57,896)	(76,790)
Withholding tax on stock-based incentive awards		(4,973)	(7,094)
Capital lease obligation payments		(643)	(514)
Net cash (required) provided by financing activities		(585,593)	59,091
Cash Flows from Discontinued Operations
Operating activities	[1]	0	(1,202)
Investing activities	[1]	0	4,494
Financing activities	[1]	0	0
Net cash provided by discontinued operations	[1]	0	3,292
Effect of exchange rate changes on cash and cash equivalents		697	(585)
Net increase (decrease) in cash and cash equivalents		194,461	(87,124)
Cash and cash equivalents at beginning of period		310,606	306,760
Cash and cash equivalents at end of period		$ 505,067	$ 219,636

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