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Supplemental Income Statement Information | 12 Months Ended
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Dec. 31, 2020
Supplemental Income Statement Elements [Abstract] |
Supplemental Income Statement Information | Supplemental Income Statement Information
Other (income) expense, net |  | 2020 |  | 2019 |  | 2018
Global Growth and Efficiency Program |  | $ | (13) |  |  | $ | 57 |  |  | $ | 88 |
Amortization of intangible assets |  | 88 |  |  | 62 |  |  | 59 |
Equity income |  | (12) |  |  | (9) |  |  | (10) |
Value-added tax matter in Brazil |  | — |  |  | (30) |  |  | — |
Write-off of certain investments and fixed assets |  | — |  |  | 51 |  |  | 1 |
Acquisition-related costs |  | 2 |  |  | 21 |  |  | — |
Charges for a change in go-to-market strategy in certain countries |  | — |  |  | 15 |  |  | — |
Other, net |  | 48 |  |  | 29 |  |  | 10 |
Total Other (income) expense, net |  | $ | 113 |  |  | $ | 196 |  |  | $ | 148 |
Interest (income) expense, net |  | 2020 |  | 2019 |  | 2018
Interest incurred |  | $ | 184 |  |  | $ | 193 |  |  | $ | 195 |
Interest capitalized |  | (1) |  |  | (1) |  |  | (2) |
Interest income |  | (19) |  |  | (47) |  |  | (50) |
Total Interest (income) expense, net |  | $ | 164 |  |  | $ | 145 |  |  | $ | 143 |
|  | 2020 |  | 2019 |  | 2018
Research and development |  | $ | 290 |  |  | $ | 281 |  |  | $ | 277 |
Advertising |  | $ | 1,948 |  |  | $ | 1,694 |  |  | $ | 1,590 |

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