RETIREMENT BENEFIT PLANS (Narrative) (Details) - USD ($)	1 Months Ended	12 Months Ended
	May 31, 2019	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Gain (loss) recognized within accumulated other comprehensive loss		$ 7,400,000	$ 7,000,000
Accumulated benefit obligation		46,400,000	60,300,000
Benefit plans, assets		38,053,000	39,914,000	$ 37,825,000
Plan assets expected to be returned next twelve months		0
Contributions expected to be paid to plan		2,600,000
Total contributions made		$ 9,800,000	$ 8,800,000	6,700,000
Defer payment and taxation, base salary, percentage (up to)	75.00%	75.00%
Defer payment and taxation, bonus and other eligible cash compensation, percentage (up to)	100.00%	100.00%
Deferred compensation plan, fair value of assets		$ 4,700,000		$ 3,800,000
FRANCE
Defined Benefit Plan Disclosure [Line Items]
Benefit plans, assets		0
GERMANY
Defined Benefit Plan Disclosure [Line Items]
Benefit plans, assets		$ 0