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Revenue from Contracts with Customers Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Capitalized Contract Cost, Net	$ 60.3
Early Termination Fee Received			$ 51.0
Minimum
Disaggregation of Revenue [Line Items]
Drilling Contracts, Term	1 month
Maximum
Disaggregation of Revenue [Line Items]
Drilling Contracts, Term	5 years
Upfront Rig Mobilizations And Certain Contract Preparation [Member]
Disaggregation of Revenue [Line Items]
Capitalized Contract Cost, Net	$ 47.4	$ 85.1
Capitalized Contract Cost, Amortization	108.4	92.9	61.7
Deferred Certification Costs [Member]
Disaggregation of Revenue [Line Items]
Capitalized Contract Cost, Net	12.9	14.5
Capitalized Contract Cost, Amortization	$ 10.1	$ 12.7	$ 4.7

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- Definition

Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

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-Topic 340
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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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