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Revenue and Customers - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)
Maersk Drilling
Disaggregation of Revenue [Line Items]
Favorable customer contracts, fair value adjustments	$ 23.0
Unfavorable customer contracts, fair value adjustment	237.7
Diamond Offshore Drilling, Inc.
Disaggregation of Revenue [Line Items]
Unfavorable customer contracts, fair value adjustment	$ 27.7
Minimum
Disaggregation of Revenue [Line Items]
Payment term (in days)	30 days
Maximum
Disaggregation of Revenue [Line Items]
Payment term (in days)	60 days

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