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Restructuring Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring | $ 65 | $ 52 | $ 109 | $ 129 | $ 167
Asset Impairment Charges |  |  | 34 | 9 | 1
Cash expenditures for restructuring |  |  | 135 | 127 |
Discontinued Operations | Powertrain Systems [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring |  |  |  | 90 | 161
Advanced Safety and User Experience |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring |  |  | 19 | 62 | 42
EMEA |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring |  |  | $ 64 | 89 |
Overhead cost reduction |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring |  |  |  |  | 91
European footprint rotation | EMEA |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring |  |  |  |  | 39
European footprint rotation | EMEA | Plant Closure | Discontinued Operations |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring |  |  |  | $ 54 | $ 93
European footprint rotation | EMEA | Advanced Safety and User Experience | Plant Closure |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring |  | $ 36 |  |  |

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