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Summary of Significant Accounting Policies - Narrative (Detail) | 12 Months Ended
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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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