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Revenue - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Allowance for doubtful accounts receivable	$ 25	$ 28
Contract liabilities	24	19
Deferred revenue		10
Increase in contract liabilities for net customer deposits	$ 15
Maximum [Member]
Disaggregation Of Revenue [Line Items]
Amortization period of revenue recognized	1 year
Contract Assets	$ 1	$ 1

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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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