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Property, Plant, and Equipment Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended			6 Months Ended	24 Months Ended
	Apr. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Mar. 31, 2025	Dec. 31, 2027
Property, Plant and Equipment [Line Items]
Proceeds from disposition of assets		$ 17.8		$ 0.0
Loss on impairment		7.8		0.0
Proceeds from disposition of assets		17.8		0.0
Loss on impairment		7.8		$ 0.0
Angola office
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Other Assets		4.0
Proceeds from disposition of assets		2.7	$ 2.5		$ 5.2
Proceeds from disposition of assets		2.7	$ 2.5		$ 5.2
Operating Segments [Member] \| Jackups
Property, Plant and Equipment [Line Items]
Loss on impairment		0.0
Loss on impairment		0.0
Operating Segments [Member] \| Floaters
Property, Plant and Equipment [Line Items]
Loss on impairment		7.8
Loss on impairment		7.8
V75 \| Operating Segments [Member] \| Jackups Member
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Other Assets		23.0
Proceeds from disposition of assets		14.0
Proceeds from disposition of assets		14.0
V75 \| Operating Segments [Member] \| Jackups Member \| Subsequent Event
Property, Plant and Equipment [Line Items]
Proceeds from disposition of assets						$ 10.0
Proceeds from disposition of assets						$ 10.0
DPS-3, DPS-5 & DPS-6 \| Operating Segments [Member] \| Floaters
Property, Plant and Equipment [Line Items]
Loss on impairment		7.8
Loss on impairment		$ 7.8
DPS-3, DPS-5 & DPS-6 \| Operating Segments [Member] \| Floaters \| Subsequent Event
Property, Plant and Equipment [Line Items]
Proceeds from disposition of assets	$ 10.0
Proceeds from disposition of assets	$ 10.0