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Supplementary Information - Interest and Other Income (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Segment Reporting [Abstract]      
Interest income $ 41 $ 60 $ 128
Earnings of equity method investments 45 89 96
Interest and other income, net $ 86 $ 149 $ 224