Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income (Loss) from Operations Before Provision for Taxes [Abstract]
Domestic	$ (38.9)	$ 39.3	$ 66.0
Foreign	146.6	117.4	136.3
Income before tax and equity in earnings	107.7	156.7	202.3
Domestic [Abstract]
Taxes currently payable, Federal	9.5	16.3	(5.3)
Taxes currently payable, State and local	6.7	3.3	0.4
Deferred income taxes	(31.5)	(16.0)	7.8
Domestic tax provision (benefit)	(15.3)	3.6	2.9
Foreign [Abstract]
Taxes currently payable	42.2	29.8	33.4
Deferred income taxes	(3.2)	(1.3)	0.3
Foreign tax provision	39.0	28.5	33.7
Total tax provision	$ 23.7	$ 32.1	$ 36.6
Reconciliation of Statutory to Effective Tax Rate [Abstract]
U.S. statutory rate	21.00%	21.00%	21.00%
Depletion	(10.30%)	(6.10%)	(5.40%)
Difference between tax provided on foreign earnings and the U.S. statutory rate	7.70%	2.40%	2.60%
Global Intangible Low-Tax Income (GILTI)	1.00%	2.30%	0.70%
Foreign Derived Intangible Income	(2.50%)	0.00%	(1.40%)
State and local taxes, net of federal tax benefit	(0.10%)	(0.40%)	0.70%
Tax credits	(0.60%)	(0.40%)	(0.40%)
Impact of uncertain tax positions	0.20%	(1.30%)	(1.10%)
Impact of officer's non-deductible compensation	1.90%	1.30%	0.80%
Foreign Withholding Tax	2.00%	1.20%	1.10%
Other	1.70%	0.50%	(0.50%)
Consolidated effective tax rate	22.00%	20.50%	18.10%
Deferred Tax Assets [Abstract]
Accrued liabilities	$ 26.8	$ 28.6
Net operating loss carry forwards	32.8	35.5
Pension and post-retirement benefits costs	16.0	18.6
Other	38.1	29.7
Valuation allowance	(25.2)	(24.0)
Total deferred tax assets	88.5	88.4
Deferred Tax Liabilities [Abstract]
Plant and equipment, principally due to differences in depreciation	146.0	167.0
Intangible assets	53.6	67.8
Other	12.2	9.6
Total deferred tax liabilities	211.8	244.4
Net deferred tax asset (liability), long-term	(123.3)	(156.0)
Net Deferred Tax Assets and Liabilities [Abstract]
Net deferred tax asset, long-term	16.0	24.4
Net deferred tax liability, long-term	139.3	180.4
Net deferred tax asset (liability), long-term	(123.3)	(156.0)
Operating Loss Carryforwards [Abstract]
Operating loss carry forwards	32.8	35.5
Operating loss carryforwards subject to expiration	21.7
Operating loss carryforwards not subject to expiration	$ 11.1
Expiration period of operating loss carryforwards	20 years
Unrecognized Tax Benefits [Abstract]
Unrecognized tax benefits that would impact effective tax rate if recognized	$ 2.1
Unrecognized Tax Benefits [Roll forward]
Balance at beginning of the year	2.6	5.1
Increases related to current year tax positions	0.5	0.4
Decreases related to audit settlements and statute expirations	(0.3)	(2.9)
Balance at the end of the year	2.8	2.6	$ 5.1
Income Tax Penalties and Interest Expense [Abstract]
Unrecognized tax benefits, interest and penalties	0.1
Unrecognized tax benefits, accrued interest and penalties	0.5
Cash Paid for Income Taxes [Abstract]
Net cash paid for income taxes	53.8	$ 44.0	$ 42.5
Undistributed Earnings of Foreign Subsidiaries [Abstract]
Foreign subsidiaries' undistributed earnings	509.2
Deferred tax liabilities with respect to foreign withholding taxes or state taxes have been recognized	$ 0.0