Revenue and Customers - Favorable and Unfavorable Contracts (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023
Unfavorable contracts
Beginning balance	$ (50,863)
Ending balance	(23,397)
Maersk Drilling
Unfavorable contracts
Beginning balance	(50,863)	$ (181,883)
Additions	(27,663)	0
Amortization	55,129	118,571
Ending balance	(23,397)	(63,312)
Maersk Drilling \| Favorable contracts
Favorable contracts
Beginning balance	10,128	34,372
Additions	0	0
Amortization	(8,549)	(23,031)
Ending balance	$ 1,579	$ 11,341

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