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v3.19.3.a.u2

Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Revenues |  |  |
Revenues | $ 22,449 | $ 22,127 | $ 26,107
Costs and Expenses |  |  |
Cost of goods sold | 4,675 | 4,853 | 4,371
Research and development expenses | 9,106 | 5,018 | 3,734
Selling, general and administrative expenses | 4,381 | 4,056 | 3,878
Total costs and expenses | 18,162 | 13,927 | 11,983
Income from operations | 4,287 | 8,200 | 14,124
Interest expense | (995) | (1,077) | (1,118)
Other income (expense), net | 1,868 | 676 | 523
Income before provision for income taxes | 5,160 | 7,799 | 13,529
Provision for income taxes | (204) | 2,339 | 8,885
Net income | 5,364 | 5,460 | 4,644
Net (loss) income attributable to noncontrolling interest | (22) | 5 | 16
Net income attributable to Gilead | $ 5,386 | $ 5,455 | $ 4,628
Net income per share attributable to Gilead common stockholders - basic | $ 4.24 | $ 4.20 | $ 3.54
Shares used in per share calculation - basic | 1,270 | 1,298 | 1,307
Net income per share attributable to Gilead common stockholders - diluted | $ 4.22 | $ 4.17 | $ 3.51
Shares used in per share calculation - diluted | 1,277 | 1,308 | 1,319
Product sales |  |  |
Revenues |  |  |
Revenues | $ 22,119 | $ 21,677 | $ 25,662
Royalty, contract and other revenues |  |  |
Revenues |  |  |
Revenues | $ 330 | $ 450 | $ 445

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