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Revenues - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disaggregation Of Revenue [Line Items] |  |  |
Accounts receivable, net of allowance for credit losses of $8,493 and $10,842 at December 31, 2021 and 2020, respectively | $ 356,083,000 | $ 160,214,000 |
Increased contract liabilities due to customer payments | 59,700,000 |  |
Total revenues | 1,357,081,000 | 1,124,249,000 | $ 2,470,685,000
Accounts Payable |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total contract liability | 60,300,000 | 600,000 |
Contract Drilling |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Amortized revenue | 0 | 100,000 |
ASC Topic 606 Revenue from Contracts with Customers |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Accounts receivable, net of allowance for credit losses of $8,493 and $10,842 at December 31, 2021 and 2020, respectively | $ 352,000,000 | $ 158,000,000 |
Minimum |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Accounts receivable payment terms | 30 days |  |
Maximum |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Accounts receivable payment terms | 60 days |  |

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