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Restructuring and Impairment Charges - Charges (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | $ 57 | $ 64 |
Cost Smart Cost of Sales Program |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 29 | 49 |
Cost Smart Cost of Sales Program | Accelerated depreciation |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  | 34 |
Cost Smart Cost of Sales Program | Mechanical stores |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  | 8 |
Cost Smart Cost of Sales Program | Employee-related severance costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  | 3 |
Cost Smart Cost of Sales Program | Other restructuring costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  | 4 |
Cost Smart Cost of Sales Program, Production facility closure, Australia |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 15 |  |
Cost Smart Cost of Sales Program, Production facility closure, Australia | Forecast | Minimum |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges | $ 10 |  |  |
Cost Smart Cost of Sales Program, Production facility closure, Australia | Forecast | Maximum |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges | $ 12 |  |  |
Cost Smart Cost of Sales Program, Production facility closure, Australia | Accelerated depreciation |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 10 |  |
Cost Smart Cost of Sales Program, Production facility closure, Australia | Employee-related severance costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 4 |  |
Cost Smart Cost of Sales Program, Production facility closure, Australia | Other restructuring costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 1 |  |
Cost Smart Cost of Sales Program, South America | Employee-related severance costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 3 |  |
Cost Smart Cost of Sales Program, North America |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 11 |  |
Cost Smart Cost of Sales Program, North America | Cessation of wet-milling |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 2 |  |
Expected additional costs |  | 0 |  |
Cost Smart SG&A Program |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 28 | 11 |
Cost Smart SG&A Program | South America, APAC and North America segments |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  | 7 |
Cost Smart SG&A Program | Employee-related severance costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 13 |  |
Cost Smart SG&A Program | Employee-related severance costs | South America, APAC and North America segments |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  | 6 |
Cost Smart SG&A Program | Employee-related severance and other costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 28 |  |
Cost Smart SG&A Program | Other restructuring costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | 15 |  |
Cost Smart SG&A Program | Consulting fees | South America, APAC and North America segments |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  | 1 |
Cost Smart SG&A Program, Latin American Finance Transformation Initiative | South America, APAC and North America segments |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  | 4 |
Cost Smart SG&A Program, Latin American Finance Transformation Initiative | Other restructuring costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  | $ 2 |  |
North America Finance Transformation Initiative | Other restructuring costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  | 3 |
Brazil leaf extraction Process restructuring |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  | $ 1 | $ 13
Argentina organizational restructuring effort | Employee-related severance and other costs |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  |  | 17
North America restructuring plans and prior year restructuring activities | Employee-related severance, other costs and adjustments |  |  |  |
Restructuring and impairment charges |  |  |  |
Restructuring charges |  |  |  | $ 2

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