Amount of contributions to defined contribution schemes.

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Annual cash contribution.

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Definite benefit plan expected change in discount rate.

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Definite benefit plan expected change project benefit obligation due to discount rate change.

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- Definition

Definite benefit plan expected change project benefit obligation due to inflation rate change.

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Definite benefit plan expected net pension cost due change in discount rate.

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Definite benefit plan expected net pension cost due change in inflation rate.

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Maximum Percent of investment in individual securities.

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- Definition

Amount of liability, recognized in statement of financial position, for defined benefit pension plan, classified as noncurrent. Excludes other postretirement benefit plan.

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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Amount of increase (decrease) in benefit obligation of defined benefit plan.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Amount, after tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Pension and Post-Employment Benefits - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Annual cash contribution		$ 0.0	$ 0.4
Percentage change in discount rate		0.25%
Amount change in PBO due to discount rate		$ 26.0
Amount change in net pension credit due to discount rate		0.4
Amount change in PBO due to change price inflation		$ 19.0
Percentage change in price inflation		0.25%
Amount change in net pension credit due price inflation		$ 1.2
Maximum percentage of Plan's assets invested in individual company's investment funds		5.00%
Management Specialists [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage change in discount rate			0.13%
Reduction in Pension Benefit Obligation		$ 14.0
Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Net pension credit, total	$ 4.4
Other Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amount of contributions to defined contribution schemes		$ 10.3	$ 10.4
United Kingdom Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of asset allocation, actual		100.00%	100.00%	100.00%
Germany [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost, total		$ 0.1	$ 0.1	$ 0.2
Europe [Member] \| Performance Chemicals [Member]
Defined Benefit Plan Disclosure [Line Items]
Post-employment obligations European businesses		5.3	$ 4.5
France [Member]
Defined Benefit Plan Disclosure [Line Items]
Amount of unrecognized actuarial net losses, net of tax		$ 0.2
Non-US [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of asset allocation, actual		11.00%	12.00%
Selling, General and Administrative Expenses [Member] \| United Kingdom Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost, total		$ 1.2	$ 0.9	$ 1.2
Selling, General and Administrative Expenses [Member] \| United Kingdom Plan [Member] \| Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost, total	$ 1.6