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Accumulated Other Comprehensive Loss - Components of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Reclassification Adjusactment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Revenue $ 1,384 $ 2,126 $ 4,763 $ 6,198
Tax effect 61 (60) 264 323
Net loss attributable to Company (55) (244) (2,195) (5,710)
Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjusactment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Revenue 2   4 1
Cost of revenue 1 4 16 7
Tax effect (1) (1) (4) (2)
Net loss attributable to Company 2 3 16 6
Derivative Financial Instruments, Net of Tax [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjusactment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]        
Revenue 2   4 1
Cost of revenue 1 4 16 7
Tax effect (1) (1) (4) (2)
Net loss attributable to Company $ 2 $ 3 $ 16 $ 6