RETIREMENT BENEFIT PLANS - Assumptions used (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other postretirement employee benefits
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	1.93%	2.95%
Effective interest rate on benefit obligation	1.21%	2.50%
United States | Pension benefits
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	2.73%	2.31%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	2.31%	3.17%
Effective interest rate on benefit obligation	1.62%	2.73%
Expected long-term rate of return on assets	5.75%	6.00%
United States | Other postretirement employee benefits
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	2.46%	1.93%
Non-U.S. | Pension benefits
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	1.97%	1.44%
Rate of compensation increase	3.21%	3.23%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	1.44%	1.69%
Effective interest rate on benefit obligation	1.24%	2.19%
Expected long-term rate of return on assets	4.10%	4.75%
Average rate of increase in compensation	3.23%	3.10%
United Kingdom
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	1.91%	1.39%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	1.39%	1.82%
Effective interest rate on benefit obligation	4.00%	3.97%