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Restructuring and Related Implementation Charges - Narrative (Details) - Global Growth and Efficiency Program - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]        
Restructuring reduction $ 16      
Restructuring reduction after tax 13      
Payments for restructuring   $ 19 $ 50  
Restructuring reserve   $ 12   $ 31
Selling, general and administrative expenses        
Restructuring Cost and Reserve [Line Items]        
Restructuring reduction 3      
Other (income) expense, net        
Restructuring Cost and Reserve [Line Items]        
Restructuring reduction $ 13