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Goodwill And Intangible Assets (Changes In Carrying Amount Of Goodwill) (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Goodwill [Line Items]    
Balance, beginning of the year $ 148 $ 85
Business Acquisitions   68
Effect of exchange rates changes 1 (5)
Balance, end of the year 149 148
Brazil [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 56 20
Business Acquisitions   37
Effect of exchange rates changes 3 (1)
Balance, end of the year 59 56
Argentina [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 10 10
Balance, end of the year 10 10
Mexico [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 37 32
Business Acquisitions   6
Effect of exchange rates changes 1 (1)
Balance, end of the year 38 37
Chile [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 37 17
Business Acquisitions   23
Effect of exchange rates changes (3) (3)
Balance, end of the year 34 37
Colombia [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 6 4
Business Acquisitions   2
Balance, end of the year 6 6
Other Countries [Member]    
Goodwill [Line Items]    
Balance, beginning of the year 2 2
Balance, end of the year $ 2 $ 2