Income Taxes (Tables)

9 Months Ended

Sep. 30, 2024

Income Tax Disclosure [Abstract]

Schedule of Effective Tax Rate

At the end of each interim period, we make our best estimate of the annual effective tax rate and the impact of discrete items, if any, and adjust the rate as necessary.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2024			2023			2024			2023
	(Dollars in millions)
Income before income tax expense	$	41.5		$	23.1		$	98.6		$	77.9
Income tax expense	8.2			14.6			20.9			29.7
Effective tax rate	19.8		%	63.2		%	21.2		%	38.1		%