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