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RESEARCH AND DEVELOPMENT (Tables) | 12 Months Ended
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Dec. 31, 2020
Research and Development [Abstract] |
Summary of research and development | Research and development costs for the years 2020, 2019 and 2018 consists of:
(in millions) |  | 2020 |  | 2019 |  | 2018
Product related research and development |  | $ | 420 |  |  | $ | 434 |  |  | $ | 376 |
Quality assurance |  | 32 |  |  | 37 |  |  | 37 |
Research and development |  | $ | 452 |  |  | $ | 471 |  |  | $ | 413 |

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