RETIREMENT BENEFIT PLANS (Narrative) (Details) - USD ($)	1 Months Ended	12 Months Ended
	May 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Gain (loss) recognized within accumulated other comprehensive loss		$ 7,000,000	$ 4,600,000
Accumulated benefit obligation		60,300,000	61,500,000
Benefit plans, assets		39,914,000	37,825,000	$ 30,770,000
Plan assets expected to be returned next twelve months		0
Contributions expected to be paid to plan		2,300,000
Total contributions made		8,800,000	6,700,000	$ 8,600,000
Defer payment and taxation, base salary, percentage (up to)	75.00%
Defer payment and taxation, bonus and other eligible cash compensation, percentage (up to)	100.00%
Deferred compensation plan, fair value of assets		3,800,000	$ 2,000,000
France and Germany
Defined Benefit Plan Disclosure [Line Items]
Benefit plans, assets		$ 0