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CONSOLIDATED STATEMENT OF INCOME (LOSS) - USD ($)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Revenue      
Total Revenue $ 32,815 $ 30,440 $ 27,810
Interest & other income 149 224 200
Gain on sale of business 215    
Expenses      
Research & engineering 702 787 1,012
General & administrative 444 432 403
Impairments & other 356 3,211 3,172
Merger & integration   308 349
Interest 575 566 570
Income (loss) before taxes 2,624 (1,183) (1,905)
Tax expense (benefit) 447 330 (278)
Net income (loss) 2,177 (1,513) (1,627)
Net income (loss) attributable to noncontrolling interests 39 (8) 60
Net income (loss) attributable to Schlumberger $ 2,138 $ (1,505) $ (1,687)
Basic earnings (loss) per share of Schlumberger $ 1.54 $ (1.08) $ (1.24)
Diluted earnings (loss) per share of Schlumberger $ 1.53 $ (1.08) $ (1.24)
Average shares outstanding:      
Basic 1,385 1,388 1,357
Assuming dilution 1,393 1,388 1,357
Services      
Revenue      
Total Revenue $ 24,296 $ 21,927 $ 20,259
Expenses      
Cost of services and sales 20,618 18,206 17,352
Product      
Revenue      
Total Revenue 8,519 8,513 7,551
Expenses      
Cost of services and sales $ 7,860 $ 8,337 $ 7,057