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Summary of Significant Accounting Policies - Narrative (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Minimum
Schedule Of Significant Accounting Policies [Line Items]
Additional terms of termination option	1 year
Short term investment, maturity period	3 months
Maximum
Schedule Of Significant Accounting Policies [Line Items]
Additional terms of termination option	10 years
Short term investment, maturity period	1 year
Customer Concentration Risk | Receivables | GE
Schedule Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	8.00%	16.00%
Customer Concentration Risk | Revenue From Contract With Customer | GE
Schedule Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	9.00%	12.00%	14.00%

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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