Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Income Tax Contingency [Line Items]
Unrecognized tax benefits would impact effective tax rate if recognized	$ 11.9
Unrecognized tax benefit	11.9	$ 14.8
Increase to income tax expense	0.5
Italian Tax Authorities [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefit	3.4
United Kingdom [Member] | Foreign [Member] | Profit Diversion Compliance Facility [Member]
Income Tax Contingency [Line Items]
Income tax examination penalties and interest expenses	1.2
Decrease in uncertain tax positions	1.2
United States [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefit	$ 10.7
Non-US [Member]
Income Tax Contingency [Line Items]
Open tax year	2011 2012 2013 2014
Non-US [Member] | Historical Impairment Of Subsidiaries [Member]
Income Tax Contingency [Line Items]
Decrease in uncertain tax positions	$ 10.7