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Interest and Other Income (Tables)
12 Months Ended
Dec. 31, 2019
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Summary Of Interest and Other Income
   2019   2018   2017 
   Million   Million   Million 
Interest income
   10,065    11,443    12,884 
Fair value gains recognized, net
   5,495    4,442    2,999 
  
 
 
   
 
 
   
 
 
 
   15,560    15,885    15,883