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Segment Information - Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Segment information    
Total assets $ 6,858 $ 6,040
North America    
Segment information    
Total assets 4,231 3,924
South America    
Segment information    
Total assets 818 774
Asia-Pacific    
Segment information    
Total assets 1,255 843
EMEA    
Segment information    
Total assets $ 554 $ 499