Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Revenues and Other
Total	$ 4,717,692,000	$ 4,058,642,000
Operating Expenses
Lease and Well	329,659,000	336,291,000
Transportation Costs	208,296,000	176,522,000
Gathering and Processing Costs	128,482,000	111,295,000
Exploration Costs	39,677,000	36,324,000
Dry Hole Costs	372,000	94,000
Impairments	1,572,935,000	72,356,000
Marketing Costs	1,108,993,000	1,270,057,000
Depreciation, Depletion and Amortization	1,000,060,000	879,595,000
General and Administrative	114,273,000	106,672,000
Taxes Other Than Income	157,360,000	192,906,000
Total	4,660,107,000	3,182,112,000
Operating Income	57,585,000	876,530,000
Other Income, Net	18,108,000	5,612,000
Income Before Interest Expense and Income Taxes	75,693,000	882,142,000
Interest Expense
Interest Expense, Net	44,690,000	54,906,000
Income Before Income Taxes	31,003,000	827,236,000
Income Tax Provision	21,190,000	191,810,000
Net Income	$ 9,813,000	$ 635,426,000
Net Income Per Share
Basic	$ 0.02	$ 1.10
Diluted	$ 0.02	$ 1.10
Average Number of Common Shares
Basic	578,462	577,207
Diluted	580,283	580,222
Other Comprehensive Income (Loss)
Foreign Currency Translation Adjustments	$ 1,341,000	$ (1,784,000)
Other, Net of Tax	6,000	6,000
Other Comprehensive Income (Loss)	1,347,000	(1,778,000)
Comprehensive Income	11,160,000	633,648,000
Crude Oil and Condensate
Operating Revenues and Other
Revenues	2,065,498,000	2,200,403,000
Natural Gas Liquids
Operating Revenues and Other
Revenues	160,535,000	218,638,000
Natural Gas
Operating Revenues and Other
Revenues	209,764,000	334,972,000
Gains (Losses) on Mark-to-Market Commodity Derivative Contracts
Operating Revenues and Other
Revenues	1,205,773,000	(20,580,000)
Gathering, Processing and Marketing
Operating Revenues and Other
Revenues	1,038,646,000	1,285,654,000
Gains (Losses) on Asset Dispositions, Net
Operating Revenues and Other
Revenues	16,460,000	(3,836,000)
Other, Net
Operating Revenues and Other
Revenues	$ 21,016,000	$ 43,391,000