Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Contingency [Line Items]
Unrecognized tax benefits would impact effective tax rate if recognized	$ 16.3
Unrecognized tax benefit	16.3	$ 16.0	$ 16.4	$ 14.0
Income tax examination interest expense	0.1
Cash payments for income taxes	36.8	$ 23.4	$ 37.6
Increase to income tax expense	$ 0.5
Effective income tax reconciliation at federal statutory income tax rate	21.00%	21.00%	21.00%
Deferred tax assets valuation allowance	$ 0.8	$ 1.1
Unrecognized tax benefits decrease from prior period tax position	1.3	$ 1.4
Foreign exchange movements	0.2
Income Tax Reconciliation Innovation Incentive Amount	2.0
Effective income tax reconciliation tax arising on distribution of assets amount	2.2
Italian Tax Authorities [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefit	3.3
State [Member] | Certain Losses Upto Two Thousand And Thirty Six And Others Indefinitely [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	0.4
Foreign [Member] | Indefinitely [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	$ 5.4
United Kingdom [Member] | Foreign [Member]
Income Tax Contingency [Line Items]
Effective income tax reconciliation at federal statutory income tax rate	19.00%
Effective income tax reconciliation change in deferred tax assets valuation allowance	$ 7.3
United Kingdom [Member] | Foreign [Member] | Effective From First Of April Two Thousand And Twenty Three [Member]
Income Tax Contingency [Line Items]
Effective income tax reconciliation at federal statutory income tax rate	25.00%
United Kingdom [Member] | Foreign [Member] | Profit Diversion Compliance Facility [Member]
Income Tax Contingency [Line Items]
Income tax examination penalties and interest expenses	$ 1.0
United States [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefit	12.0
United States [Member] | Federal [Member] | Indefinitely [Member]
Income Tax Contingency [Line Items]
Operating loss carry forwards	5.4
Non-US [Member] | Non Significant Position [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefits decrease from prior period tax position	$ 0.2
Non-US [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year	2011
Non-US [Member] | Latest Tax Year [Member]
Income Tax Contingency [Line Items]
Open tax year	2014
Non-US [Member] | Historical Impairment Of Subsidiaries [Member]
Income Tax Contingency [Line Items]
Decrease in uncertain tax positions	$ 0.9