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Restructuring and Impairment Charges - Employee-related severance (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Restructuring accrual    
Restructuring charges $ 48 $ 57
Employee-related severance costs    
Restructuring accrual    
Balance in severance accrual at beginning of period 15  
Acquisition related 1  
Payments made to terminated employees (12)  
Foreign exchange translation (1)  
Balance in severance accrual at end of period 12 $ 15
Restructuring reserve, Expected to be paid in next 12 months 11  
Cost Smart Cost of Sales and SG&A Program | Employee-related severance costs    
Restructuring accrual    
Restructuring charges $ 9