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Supplemental Financial Information (Cash Taxes Paid) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Paid, by Individual Jurisdiction [Line Items]
Bermuda federal	$ 0.0
Foreign	(61.5)
Income Taxes Paid, Net	61.5	$ 55.6	$ (8.3)
Australia (2)
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	(23.7)
Income tax refunds	26.0
Brazil
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	(18.6)
U.S.
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	(16.8)
Income tax refunds		$ 35.9	$ 45.9
Angola
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	(13.1)
Malaysia
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	(8.0)
Trinidad
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	(6.9)
Saudi Arabia
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	(4.2)
Other foreign
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	$ (17.6)