Asset Impairments - Additional Information (Detail)	3 Months Ended		4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2021 Rig	Mar. 31, 2021 Rig	Apr. 23, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 Rig
Schedule Of Asset Impairment Charges [Line Items]
Loss on impairment of assets | $			$ 197,027,000	$ 132,449,000	$ 0	$ 0
2021 Impaired Rigs [Member]
Schedule Of Asset Impairment Charges [Line Items]
Number of rigs evaluated for impairment | Rig	3	3					1
Number of rigs impaired during period | Rig	2	1
Loss on impairment of assets | $			$ 197,000,000	$ 132,400,000
2020 Impaired Rigs [Member]
Schedule Of Asset Impairment Charges [Line Items]
Impaired long-lived assets held and used, method for determining fair value					We estimated the fair values of the impaired rigs using an income approach, whereby the fair value of each rig was estimated based on a calculation of the rig’s future net cash flows. These calculations utilized significant unobservable inputs, including management’s assumptions related to estimated dayrate revenue, rig utilization and, when applicable, estimated capital expenditures, repair and regulatory survey costs, as well as estimated proceeds that may be received on ultimate disposition of the rig. Our fair value estimate was representative of a Level 3 fair value measurement due to the significant level of estimation involved and the lack of transparency as to the inputs used.