Equity Method Investment In ARO Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) jackup drillship	Mar. 31, 2022 USD ($)	Jan. 31, 2020 drillship
Schedule of Equity Method Investments [Line Items]
Number of Rigs Owned by ARO \| jackup	7
Total Number Of Contract Drilling Rigs	52
Number of Newbuild Jackup Rigs \| jackup	20
Order Period	10 years
ARO Rigs Under Construction \| drillship	2		2
Shareholder Notes Payable, Term	10 years
Other
Schedule of Equity Method Investments [Line Items]
Total Number Of Contract Drilling Rigs	8
ARO
Schedule of Equity Method Investments [Line Items]
Total Number Of Contract Drilling Rigs	7
ARO
Schedule of Equity Method Investments [Line Items]
Lease Revenue From Related Party \| $	$ 18.8	$ 14.2
London Interbank Offered Rate (LIBOR)
Schedule of Equity Method Investments [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Middle East & Africa
Schedule of Equity Method Investments [Line Items]
Total Number Of Contract Drilling Rigs	17
Middle East & Africa \| Other
Schedule of Equity Method Investments [Line Items]
Total Number Of Contract Drilling Rigs	8
Middle East & Africa \| ARO
Schedule of Equity Method Investments [Line Items]
Total Number Of Contract Drilling Rigs	7
Middle East & Africa \| Work-in-progress \| ARO
Schedule of Equity Method Investments [Line Items]
Total Number Of Contract Drilling Rigs \| drillship	2
ARO
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%