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Debt - Summary of long-term debt (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2018
Debt      
Other long-term debt $ 39 $ 30  
Total debt at face value 717 763  
Current maturities of long-term debt and unamortized discount (9) (56)  
Long-term debt, less current maturities 708 707  
Term loan due 2028      
Debt      
Debt at face value $ 677 $ 684 $ 700
Effective interest rate (as a percent) 1.73% 1.77%  
Foreign subsidiary obligations      
Debt      
Debt at face value $ 1 $ 49  
Foreign subsidiary obligations | Denominated in Euros      
Debt      
Total debt at face value   46  
Equipment loan      
Debt      
Long-term debt assumed $ 9    
Interest rate (as a percent) 5.60%    
Note due 2027      
Debt      
Debt at face value   $ 30  
Interest rate (as a percent)   1.28%