Income Taxes (Details 2) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Taxes
U.S. federal income tax expense at applicable statutory rate	$ 84.1	$ 67.7	$ 28.5
Tax Effect Of:
State income tax expense at statutory rates, net of U.S. federal income tax	3.7	3.7	1.5
Non-deductible expenses	2.9	1.7	0.5
Share-based compensation	4.0	1.9	(3.5)
Other permanent differences	0.9	(0.2)	(2.0)
Difference between U.S. federal and foreign tax rates	16.7	13.9	7.4
Provision in excess of statutory rates	8.3	3.6	2.9
Change in federal and foreign valuation allowance	2.7	(7.7)	26.7
GILTI, net of tax credits	5.9	9.8	3.9
Tax credits	(9.2)	(0.7)	(1.1)
Other	0.9	(1.8)	0.3
Total income tax expense	$ 120.9	$ 91.9	$ 65.1
Effective tax rate	30.19%	28.47%	48.00%

The amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other permanent differences.

No definition available.