Property and Equipment - Additional Information (Details)	1 Months Ended	3 Months Ended			8 Months Ended	9 Months Ended
	Feb. 05, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2021 rig	Sep. 30, 2020 USD ($)	Aug. 25, 2021 USD ($)
Property, Plant and Equipment [Line Items]
Loss on impairment	$ 0				$ 0		$ 1,119,517,000
Property damage insurance coverage, deductible amount					10,000,000
Property damage insurance coverage limit amount per claim					50,000,000
Hurricane losses	$ 0	$ 10,441,000	$ 0		10,441,000		0
Held for sale, not discontinued operations | Jackup Rigs in Saudi Arabia
Property, Plant and Equipment [Line Items]
Purchase and Sale Agreement, consideration								$ 292,400,000
Number of rigs classified as held for sale | rig						4
Purchase and Sale Agreement covenant, period for purposes of drilling gas wells						1 year
Purchase and Sale Agreement covenant, period for purposes of drilling oil wells						2 years
Drillships
Property, Plant and Equipment [Line Items]
Loss on impairment				$ 1,100,000,000			$ 1,100,000,000
Rig Noble Globetrotter II
Property, Plant and Equipment [Line Items]
Hurricane losses		$ 5,400,000			$ 5,400,000