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Restructuring and Impairment Costs - Narrative (Details) employee in Thousands, $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2021 USD ($) employee plant | Dec. 31, 2021 USD ($) employee | Dec. 31, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Noncash adjustment—underspend/other |  |  |  |  | $ 20
Restructuring reserve | $ 86 | $ 86 |  | $ 115 |
Restructuring and impairment costs |  | $ 4 | $ 7 |  |
Number of positions eliminated to date | employee | 15 | 15 |  |  |
Number of positions eliminated | employee | 14 |  |  |  |
Number of plants expected to close | plant | 25 |  |  |  |
Number of plants closed | plant | 20 |  |  |  |
2022 Restructuring Plan |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected restructuring costs | $ 3 | $ 3 |  |  |
Noncash adjustment—underspend/other |  | 6 |  |  |
Restructuring reserve | 2 | 2 |  | 3 |
Utilized—cash |  | 1 |  |  |
2021 Restructuring Plan |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected restructuring costs |  |  |  | 27 |
Noncash adjustment—underspend/other |  | (1) |  | 16 |
Restructuring reserve | 11 | 11 |  | 22 |
Utilized—cash |  | 10 |  |  |
2021 Restructuring Plan | EMEA |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected restructuring costs |  |  |  | 23 |
2021 Restructuring Plan | Americas |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring reserve |  |  |  | 3 |
2021 Restructuring Plan | Asia |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Expected restructuring costs |  |  |  | 1 |
2020 Restructuring Plan |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Noncash adjustment—underspend/other |  | (6) |  |  |
Restructuring reserve | 61 | 61 |  | $ 77 |
Restructuring and impairment costs |  |  |  |  | 205
Utilized—cash |  | 10 |  |  |
2020 Restructuring Plan | EMEA |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and impairment costs |  |  |  |  | 175
2020 Restructuring Plan | Americas |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and impairment costs |  |  |  |  | 20
2020 Restructuring Plan | Asia |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and impairment costs |  |  |  |  | $ 10
Restructuring Plan 2018, 2017, 2016 |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Utilized—cash |  | 1 |  |  |
2018 Restructuring Plan |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring reserve | 3 | 3 |  |  |
2017 Restructuring Plan |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring reserve | 2 | 2 |  |  |
2016 Restructuring Plan |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring reserve | $ 1 | $ 1 |  |  |

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