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Revenue - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Allowance for doubtful accounts receivable	$ 26	$ 28
Contract liabilities	21	19
Deferred revenue		$ 10
Increase in contract liabilities for net customer deposits	$ 12
Maximum [Member]
Disaggregation Of Revenue [Line Items]
Amortization period of revenue recognized	1 year

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Amortization period of revenue recognized.

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Amount of allowance for credit loss on accounts receivable.

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