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v3.8.0.1

Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenues: |  |  |
Product sales | $ 21,795 | $ 21,892 | $ 20,944
Other revenues | 1,054 | 1,099 | 718
Total revenues | 22,849 | 22,991 | 21,662
Operating expenses: |  |  |
Cost of sales | 4,069 | 4,162 | 4,227
Research and development | 3,562 | 3,840 | 4,070
Selling, general and administrative | 4,870 | 5,062 | 4,846
Other | 375 | 133 | 49
Total operating expenses | 12,876 | 13,197 | 13,192
Operating income | 9,973 | 9,794 | 8,470
Interest expense, net | 1,304 | 1,260 | 1,095
Interest and other income, net | 928 | 629 | 603
Income before income taxes | 9,597 | 9,163 | 7,978
Provision for income taxes | 7,618 | 1,441 | 1,039
Net income | $ 1,979 | $ 7,722 | $ 6,939
Earnings per share: |  |  |
Basic (in usd per share) | $ 2.71 | $ 10.32 | $ 9.15
Diluted (in usd per share) | $ 2.69 | $ 10.24 | $ 9.06
Shares used in the calculation of earnings per share: |  |  |
Basic (in shares) | 731 | 748 | 758
Diluted (in shares) | 735 | 754 | 766

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