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Supplementary Information - Additional Quarterly Financial Data (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Supplementary Information                  
Impairment on disposition of assets   $ (20)   $ 360         $ 340
Restructuring charges, after tax   7 $ 2 8   $ 15 $ 8 $ 11  
Charges (income) for tax matters, after tax $ 4 4 (32) 3 $ (3) 6      
Acquisition/integration costs, after tax 1 $ 4 4 $ 1 4 4 $ 2    
Income for other matters, after tax 12   10   27        
Amount of benefit in equity method acquisition charges     $ 3            
Restructuring and impairment costs, after tax 19       40        
Amount of benefit in after-tax, fair value adjustment to equity investments $ 5                
Extinguishment of debt, after tax           4      
Fair value markup of acquired inventory, after tax         1 3      
Storm damage cost, after tax         $ 1 $ 2