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Net Revenues - Summary of Accounts Receivable, Net of Allowances, Contract Assets and Contract Liabilities from Contracts with Customer (Detail) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Revenues [Abstract]    
Accounts receivable, net of allowances $ 723 $ 639
Contract assets 224 142
Contract liabilities $ 238 $ 219