title,"Year Ending Dec 2020 (Update)","Year Ending Dec 2019 (Update)","Year Ending Dec 2018 (Update)","Year Ending Dec 2017 (Reclassified)"
"Net Sales",4667.000000,6495.000000,6323.000000,5466.000000
Revenue,4667.000000,6495.000000,6323.000000,5466.000000
"Total Revenue",4667.000000,6495.000000,6323.000000,5466.000000
"Cost of Revenue",1060.000000,1920.000000,1942.000000,1386.000000
"Cost of Revenue, Total",1060.000000,1920.000000,1942.000000,1386.000000
"Gross Profit",3607.000000,4575.000000,4381.000000,4080.000000
"Selling/General/Administrative Expense",1575.000000,1634.000000,1607.000000,1865.000000
"Selling/General/Admin. Expenses, Total",1575.000000,1634.000000,1607.000000,1865.000000
"Research & Development",351.000000,233.000000,362.000000,507.000000
Depreciation,2074.000000,2122.000000,1883.000000,2883.000000
Depreciation/Amortization,2074.000000,2122.000000,1883.000000,2883.000000
"Impairment-Assets Held for Use",2126.000000,0.000000,0.000000,4203.000000
"Other Unusual Expense (Income)",0.000000,0.000000,53.000000,0.000000
"Unusual Expense (Income)",2126.000000,0.000000,53.000000,4203.000000
"Total Operating Expense",7186.000000,5909.000000,5847.000000,10844.000000
"Operating Income",-2519.000000,586.000000,476.000000,-5378.000000
"Interest Expense - Non-Operating",-468.000000,-380.000000,-399.000000,-325.000000
"Interest Capitalized - Non-Operating",,,,
"Interest Expense, Net Non-Operating",-468.000000,-380.000000,-399.000000,-325.000000
"Investment Income - Non-Operating",-6.000000,3.000000,-5.000000,15.000000
"Interest/Invest Income -  Non-Operating",-6.000000,3.000000,-5.000000,15.000000
"Interest Inc.(Exp.),Net-Non-Op., Total",-474.000000,-377.000000,-404.000000,-310.000000
"Gain (Loss) on Sale of Assets",87.000000,22.000000,32.000000,-86.000000
"Other Non-Operating Income (Expense)",56.000000,-10.000000,116.000000,-4.000000
"Other, Net",56.000000,-10.000000,116.000000,-4.000000
"Net Income Before Taxes",-2850.000000,221.000000,220.000000,-5778.000000
"Provision for Income Taxes",-11.000000,461.000000,335.000000,-1837.000000
"Net Income After Taxes",-2839.000000,-240.000000,-115.000000,-3941.000000
"Minority Interest",-254.000000,-168.000000,-167.000000,-133.000000
"Net Income Before Extra. Items",-3093.000000,-408.000000,-282.000000,-4074.000000
"Discontinued Operations",,,,
"Extraordinary Item",,,,0.000000
"Total Extraordinary Items",,,,0.000000
"Net Income",-3093.000000,-408.000000,-282.000000,-4074.000000
"Preferred Dividends",0.000000,-4.000000,-46.000000,-46.000000
"Total Adjustments to Net Income",0.000000,-4.000000,-46.000000,-46.000000
"Income Available to Com Excl ExtraOrd",-3093.000000,-412.000000,-328.000000,-4120.000000
"Income Available to Com Incl ExtraOrd",-3093.000000,-412.000000,-328.000000,-4120.000000
"Basic Weighted Average Shares",304.800000,301.200000,298.200000,314.100000
"Basic EPS Excluding Extraordinary Items",-10.147640,-1.367860,-1.099930,-13.116840
"Basic EPS Including Extraordinary Items",-10.147640,-1.367860,-1.099930,-13.116840
"Dilution Adjustment",,,,
"Diluted Net Income",-3093.000000,-412.000000,-328.000000,-4120.000000
"Diluted Weighted Average Shares",304.800000,301.200000,298.200000,314.100000
"Diluted EPS Excluding ExtraOrd Items",-10.147640,-1.367860,-1.099930,-13.116840
"Diluted EPS Including ExtraOrd Items",-10.147640,-1.367860,-1.099930,-13.116840
"DPS - Common Stock Primary Issue",1.000000,1.000000,1.000000,1.250000
"Dividends per Share - Com Stock Issue 3",,1.000000,1.000000,
"Gross Dividends - Common Stock",307.000000,310.000000,299.000000,317.000000
"Other Unusual Expense(Income), Suppl.",,,,
"Non-Recurring Items, Supplemental, Total",,,,
"Total Special Items",2039.000000,-22.000000,21.000000,4289.000000
"Normalized Income Before Taxes",-811.000000,199.000000,241.000000,-1489.000000
"Effect of Special Items on Income Taxes",713.650000,-7.700000,7.350000,1501.150000
"Inc Tax Ex Impact of Sp Items",702.650000,453.300000,342.350000,-335.850000
"Normalized Income After Taxes",-1513.650000,-254.300000,-101.350000,-1153.150000
"Normalized Inc. Avail to Com.",-1767.650000,-426.300000,-314.350000,-1332.150000
"Basic Normalized EPS",-5.799380,-1.415340,-1.054160,-4.241170
"Diluted Normalized EPS",-5.799380,-1.415340,-1.054160,-4.241170
"Depreciation, Supplemental",2074.000000,2122.000000,1883.000000,2883.000000
"Interest Expense, Supplemental",468.000000,380.000000,399.000000,325.000000
"Interest Capitalized, Supplemental",,,,
"Rental Expense, Supplemental",200.000000,414.000000,154.000000,123.000000
"Stock-Based Compensation, Supplemental",79.000000,85.000000,72.000000,86.000000
"Equity in Affiliates, Supplemental",,,,
"Minority Interest, Supplemental",-254.000000,-168.000000,-167.000000,-133.000000
"Research & Development Exp, Supplemental",351.000000,233.000000,362.000000,507.000000
"Audit Fees",6.076000,6.522000,6.534000,8.066000
"Audit-Related Fees",0.782000,2.266000,1.544000,1.066000
"Tax Fees",1.161000,2.249000,2.400000,1.882000
"All Other Fees",0.129000,0.106000,0.000000,0.000000
"Gross Margin",77.287340,70.438800,69.286730,74.643250
"Operating Margin",-53.974720,9.022320,7.528070,-98.390050
"Pretax Margin",-61.067070,3.402620,3.479360,-105.708010
"Effective Tax Rate",,208.597290,152.272730,
"Net Profit Margin",-66.273840,-6.343340,-5.187410,-75.375050
"Normalized EBIT",-393.000000,586.000000,529.000000,-1175.000000
"Normalized EBITDA",1681.000000,2708.000000,2412.000000,1708.000000
"Current Tax - Domestic",-4.000000,-1.000000,1.000000,-23.000000
"Current Tax - Foreign",48.000000,447.000000,455.000000,-1987.000000
"Current Tax - Local",-1.000000,16.000000,-45.000000,0.000000
"Current Tax - Total",43.000000,462.000000,411.000000,-2010.000000
"Deferred Tax - Domestic",6.000000,72.000000,-74.000000,-6.000000
"Deferred Tax - Foreign",-60.000000,-73.000000,-2.000000,179.000000
"Deferred Tax - Total",-54.000000,-1.000000,-76.000000,173.000000
"Other Tax",,,0.000000,0.000000
"Income Tax - Total",-11.000000,461.000000,335.000000,-1837.000000
"Interest Cost - Domestic",73.000000,89.000000,91.000000,102.000000
"Service Cost - Domestic",50.000000,44.000000,42.000000,49.000000
"Expected Return on Assets - Domestic",-180.000000,-180.000000,-194.000000,-168.000000
"Actuarial Gains and Losses - Domestic",48.000000,52.000000,39.000000,58.000000
"Curtailments & Settlements - Domestic",0.000000,93.000000,4.000000,19.000000
"Other Pension, Net - Domestic",,,0.000000,0.000000
"Domestic Pension Plan Expense",-9.000000,98.000000,-18.000000,60.000000
"Interest Cost - Post-Retirement",1.000000,2.000000,3.000000,3.000000
"Service Cost - Post-Retirement",3.000000,2.000000,2.000000,4.000000
"Actuarial Gains and Losses - Post-Retir.",-1.000000,,,
"Curtailments & Settlements - Post-Retir.",,0.000000,-2.000000,
"Post-Retirement Plan Expense",3.000000,4.000000,3.000000,7.000000
"Defined Contribution Expense - Domestic",22.000000,,,
"Total Pension Expense",16.000000,102.000000,-15.000000,67.000000
"Discount Rate - Domestic",3.200000,3.900000,3.900000,3.700000
"Expected Rate of Return - Domestic",6.700000,7.100000,7.200000,7.300000
"Compensation Rate - Domestic",3.800000,3.800000,4.500000,4.600000
"Total Plan Interest Cost",74.000000,91.000000,94.000000,105.000000
"Total Plan Service Cost",53.000000,46.000000,44.000000,53.000000
"Total Plan Expected Return",-180.000000,-180.000000,-194.000000,-168.000000
"Total Plan Other Expense",,,0.000000,0.000000
"Crude Oil, Avg. Production (Barrels/Day)",178000.000000,169000.000000,146000.000000,177000.000000
"Crude Oil Production (Barrels)",65110000.000000,61634000.000000,53360000.000000,64745000.000000
"Gas Liquids, Avg. Prod. (Barrels/Day)",61000.000000,47000.000000,39000.000000,42000.000000
"Gas Liquids Production (Barrels)",22392000.000000,17092000.000000,14117000.000000,15152000.000000
"Natural Gas, Avg. Prod. (Cu. Meters/Day)",15689280.000000,16199040.000000,15660960.000000,14726400.000000
"Natural Gas, Avg. Sales Price per Cu.Mt.",0.105230,0.137710,0.147600,0.119000
"Natural Gas Production (Cubic Meters)",5746949279.999990,5908939680.000020,5719563840.000020,5369981760.000000
"Oil Equivalent Production (Barrels/Day)",331000.000000,311000.000000,277000.000000,306000.000000
"Exploration and Development Costs",307.000000,455.000000,442.000000,322.000000
"Retail Sales",,,,