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Goodwill and Other Intangibles - Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Changes in the carrying amount of goodwill |  |  |  |
Net goodwill balance, January 1 | $ 1,853 |  |  |
Ending balance, December 31 | $ 1,842 |  | $ 1,853 |
Goodwill impairment test, weighted average cost of capital discount rate for future cash flow | 10.70% |  |  |
Sensitivity analysis Increase in discount rate | 1.00% |  |  |
Sensitivity analysis decrease in operating margin assumption | 1.00% |  |  |
Sensitivity analysis decrease in revenue growth rate | 1.00% |  |  |
Engine [Member] |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |
Gross goodwill balance, January 1 | $ 1,343 |  | 1,360 |
Accumulated impairment losses, January 1 |  |  | (502) | $ (502)
Net goodwill balance, January 1 | 841 |  | 858 |
Acquisitions | 0 |  | 0 |
Translation adjustment and other | (6) |  | (17) |
Ending balance, December 31 | 835 |  | 841 |
Drivetrain [Member] |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |
Gross goodwill balance, January 1 | 1,012 |  | 1,024 |
Net goodwill balance, January 1 | 1,012 |  | 1,024 |
Acquisitions | 7 | [1] | 2 |
Translation adjustment and other | (12) |  | (14) |
Ending balance, December 31 | $ 1,007 |  | $ 1,012 |
[1] | * Acquisitions relate to the Company's 2019 purchase of Rinehart Motion Systems LLC and AM Racing LLC and the 2017 purchase of Sevcon.

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