Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets
Accrued liabilities and reserves	$ 68.1	$ 57.8
Pension and other post-retirement compensation and benefits	19.4	24.6
Employee compensation and benefits	26.5	18.2
Research and development costs	18.1	0.0
Tax loss and credit carryforwards	752.4	729.7
Interest limitations	104.9	67.5
Total deferred tax assets	989.4	897.8
Valuation allowance	756.9	727.2
Deferred tax assets, net of valuation allowance	232.5	170.6
Deferred tax liabilities
Property, plant and equipment	18.1	10.2
Goodwill and other intangibles	213.0	210.4
Other liabilities	18.7	16.7
Deferred Tax Liabilities, Gross	249.8	237.3
Total deferred tax liabilities	$ 17.3	$ 66.7