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GOODWILL AND OTHER INTANGIBLES (Tables) | 3 Months Ended
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Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of goodwill | 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, 2021 | $ | 2,169 |  |  | $ | 1,301 |  |  | $ | 311 |  |  | $ | 3,781 |
Accumulated impairment losses, December 31, 2021 | (502) |  |  | — |  |  | — |  |  | (502) |
Net goodwill balance, December 31, 2021 | $ | 1,667 |  |  | $ | 1,301 |  |  | $ | 311 |  |  | $ | 3,279 |
Goodwill during the period: |  |  |  |  |  |  |
Acquisition | — |  |  | 132 |  |  | — |  |  | 132 |
Other, primarily translation adjustment | (28) |  |  | (4) |  |  | 9 |  |  | (23) |
Ending balance, March 31, 2022 | $ | 1,639 |  |  | $ | 1,429 |  |  | $ | 320 |  |  | $ | 3,388 |
Summary of intangible assets gross roll forward | The Company’s other intangible assets, primarily from acquisitions, consist of the following:
|  |  | March 31, 2022 |  | December 31, 2021
(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 |  | $ | 465 |  |  | $ | 113 |  |  | $ | 352 |  |  | $ | 443 |  |  | $ | 105 |  |  | $ | 338 |
Customer relationships | 7 - 15 |  | 929 |  |  | 319 |  |  | 610 |  |  | 877 |  |  | 310 |  |  | 567 |
Miscellaneous | 2 - 13 |  | 14 |  |  | 7 |  |  | 7 |  |  | 14 |  |  | 7 |  |  | 7 |
Total amortized intangible assets |  |  | 1,408 |  |  | 439 |  |  | 969 |  |  | 1,334 |  |  | 422 |  |  | 912 |
Unamortized trade names |  |  | 178 |  |  | — |  |  | 178 |  |  | 179 |  |  | — |  |  | 179 |
Total other intangible assets |  |  | $ | 1,586 |  |  | $ | 439 |  |  | $ | 1,147 |  |  | $ | 1,513 |  |  | $ | 422 |  |  | $ | 1,091 |

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