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Goodwill and Intangible Assets, Net Goodwill Table (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2020
Goodwill [Line Items] |  |  |  |
Gross carrying amount of goodwill | $ 334 | $ 388 | $ 369 |
Goodwill arising from acquisitions |  | 19 | 34 |
Foreign exchange adjustments to goodwill |  |  | 1 |
Accumulated impairment of goodwill | (87) | (90) | (87) |
Impairment of goodwill |  | (3) |  |
Goodwill |  | 298 | 282 |
Automotive Segment |  |  |  |
Goodwill [Line Items] |  |  |  |
Gross carrying amount of goodwill | 328 | 341 | 336 |
Goodwill arising from acquisitions |  | 5 | 8 |
Accumulated impairment of goodwill | (87) | (87) | (87) |
Impairment of goodwill | (87) |  |  |
Goodwill |  | 254 | 249 | $ 249
Food Packaging Segment |  |  |  |
Goodwill [Line Items] |  |  |  |
Gross carrying amount of goodwill | $ 6 | 6 | 6 |
Goodwill |  | 6 | 6 |
Metals Segment |  |  |  |
Goodwill [Line Items] |  |  |  |
Gross carrying amount of goodwill |  | 4 | 4 |
Goodwill arising from acquisitions |  |  | 4 |
Goodwill |  | 4 | 4 |
Home Fashion Segment |  |  |  |
Goodwill [Line Items] |  |  |  |
Gross carrying amount of goodwill |  | 24 | 23 |
Goodwill arising from acquisitions |  | 1 | 22 |
Foreign exchange adjustments to goodwill |  |  | 1 |
Accumulated impairment of goodwill |  | (3) |  |
Impairment of goodwill |  | (3) |  |
Goodwill |  | 21 | $ 23 |
Pharma Segment |  |  |  |
Goodwill [Line Items] |  |  |  |
Gross carrying amount of goodwill |  | 13 |  |
Goodwill arising from acquisitions |  | 13 |  |
Goodwill |  | $ 13 |  |

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