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Certain Transactions - Business Acquisitions - Summary of Major Classes of Assets and Liabilities Included as Held for Sale (Detail) - USD ($)
$ in Millions
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Business Combinations [Abstract]    
Inventories $ 160 $ 0
Property, plant and equipment, net and others 239 98
Goodwill 27 0
Adjustments of assets held for sale to fair value (313) (11)
Total assets of the disposal group classified as held for sale in the consolidated balance sheets $ 113 $ 87