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Share-Based Compensation (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		20 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted "target" award (in shares)			168,088
Performance-based And Restricted Phantom Stock Units | Long-Term Incentive Plan 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 6.1	$ 1.5	$ 8.7	$ 3.2
Performance-based Phantom Stock Units | Long-Term Incentive Plan 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period (in years)			3 years
Maximum payout level based on "target" award (in percent)			150.00%
Forfeited in period (in shares)					17,212
Accrued share-based compensation liability	$ 12.9		$ 12.9		$ 12.9
Restricted Phantom Stock Units | Long-Term Incentive Plan 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted "target" award (in shares)			65,767		105,746
Forfeited in period (in shares)					4,533
Accrued share-based compensation liability						$ 4.6
Vested in period (shares)	6,809		8,525

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Share-Based Compensation Arrangement By Share-Based Payment Award, Maximum Percentage Of Shares Issued Based On Performance Target Award

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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