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Receivables, Contract Liabilities and Performance Obligations - Summary of Information about Receivables and Contract Liabilities (Detail) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Disaggregation of Revenue [Line Items] |  |
Current receivables, which are included in “Accounts receivable, net” | $ 2,754,153 | $ 2,685,448
Contract liabilities, which are included in “Accrued expenses and other current liabilities” and “Other liabilities” | 109,401 | 107,158
Accounts Receivable, Net [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Current receivables, which are included in “Accounts receivable, net” | 2,754,153 | 2,685,448
Other Assets [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Non-current receivables, which are included in “Other assets” | 153,751 | 154,662
Accrued Expenses and Other Current Liabilities and Other Liabilities [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Contract liabilities, which are included in “Accrued expenses and other current liabilities” and “Other liabilities” | $ 109,401 | $ 107,158

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