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GOODWILL AND OTHER INTANGIBLES (Tables) | 9 Months Ended
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Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of goodwill |
(in millions) |
Air Management | $ | 150 |
e-Propulsion & Drivetrain | 301 |
Fuel Injection | — |
Aftermarket | 303 |
Total acquisition date goodwill | $ | 754 |
A summary of the changes in the carrying amount of goodwill are as follows:
(in millions) | Air Management |  | e-Propulsion & Drivetrain |  | Aftermarket |  | Total
Gross goodwill balance, December 31, 2020 | $ | 1,517 |  |  | $ | 1,313 |  |  | $ | 299 |  |  | $ | 3,129 |
Accumulated impairment losses, December 31, 2020 | (502) |  |  | — |  |  | — |  |  | (502) |
Net goodwill balance, December 31, 2020 | $ | 1,015 |  |  | $ | 1,313 |  |  | $ | 299 |  |  | $ | 2,627 |
Goodwill during the period: |  |  |  |  |  |  |
Acquisition | 707 |  |  | — |  |  | — |  |  | 707 |
Measurement period adjustments | (4) |  |  | 28 |  |  | 16 |  |  | 40 |
Held for sale | — |  |  | (18) |  |  | — |  |  | (18) |
Other, primarily translation adjustment | (36) |  |  | (31) |  |  | (4) |  |  | (71) |
Ending balance, September 30, 2021 | $ | 1,682 |  |  | $ | 1,292 |  |  | $ | 311 |  |  | $ | 3,285 |
Summary of intangible assets gross roll forward | The Company’s other intangible assets, primarily from acquisitions, consist of the following:
|  |  | September 30, 2021 |  | December 31, 2020
(in millions) | Estimated useful lives (years) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Amortized intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Patented and unpatented technology | 5 - 15 |  | $ | 445 |  |  | $ | 97 |  |  | $ | 348 |  |  | $ | 383 |  |  | $ | 77 |  |  | $ | 306 |
Customer relationships | 7 - 15 |  | 883 |  |  | 299 |  |  | 584 |  |  | 893 |  |  | 272 |  |  | 621 |
Miscellaneous | 2 - 13 |  | 10 |  |  | 7 |  |  | 3 |  |  | 10 |  |  | 7 |  |  | 3 |
Total amortized intangible assets |  |  | 1,338 |  |  | 403 |  |  | 935 |  |  | 1,286 |  |  | 356 |  |  | 930 |
Unamortized trade names |  |  | 199 |  |  | — |  |  | 199 |  |  | 166 |  |  | — |  |  | 166 |
Total other intangible assets |  |  | $ | 1,537 |  |  | $ | 403 |  |  | $ | 1,134 |  |  | $ | 1,452 |  |  | $ | 356 |  |  | $ | 1,096 |

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