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Restructuring and Impairment Charges - Charges (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Sep. 30, 2021
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Restructuring and impairment charges          
Restructuring/impairment charges and related adjustments     $ 387 $ 93 $ 57
Impairment on disposition of assets $ (20) $ 360 340    
Impairment charges       45  
Restructuring charges     47 $ 48 57
Arcor joint venture          
Restructuring and impairment charges          
Impairment on disposition of assets     340    
Cost Smart Cost of Sales and SG&A Program          
Restructuring and impairment charges          
Restructuring charges     $ 44   $ 57