Equity Method Investment In ARO - Summarized Financial Data (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Investment Owned, Balance [Abstract]
Equity in earnings (losses) of ARO	$ 10.6	$ (1.1)	$ 17.4	$ 1.5
ARO
Investment Owned, Balance [Abstract]
Income (Loss) From Equity Method Investments, Ownership Interest	7.4	(4.3)	11.1	(4.8)
Amortization of basis differences	3.2	3.2	6.3	6.3
Equity in earnings (losses) of ARO	10.6	$ (1.1)	17.4	$ 1.5
EquityMethodInvestmentAdjustmentRecognizedInIncome	$ 14.3		$ 14.3

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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