Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
NOL and credit carryforwards	$ 84.6	$ 88.9
Pension, other postretirement and postemployment benefits	25.9	26.8
Payroll and compensation	18.0	18.6
Legal, environmental and self-insurance accruals	11.8	23.4
Working capital accruals	27.0	20.0
Research and experimental expenditures	35.9	25.6
Other	5.6	4.3
Total deferred tax assets	208.8	207.6
Valuation allowance	(77.0)	(75.2)
Net deferred tax assets	131.8	132.4
Deferred tax liabilities:
Intangible assets recorded in acquisitions	171.8	159.4
Basis difference in affiliates	15.9	17.4
Accelerated depreciation	30.0	16.1
Other	4.4	9.0
Total deferred tax liabilities	222.1	201.9
Total deferred tax liabilities	$ (90.3)	$ (69.5)

The tax effects as of the balance sheet date of the amount of excesses of tax deductions over taxable income in a year which cannot be used on the tax returns in the current year but may be carried forward to reduce taxable income or income taxes payable in a future year in certain jurisdictions and the tax effects arising from all unused tax credits available to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset.

No definition available.