PENSIONS AND OTHER EMPLOYEE BENEFITS - Assumptions (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Benefit obligation assumptions:
Discount rate	2.84%	2.50%	3.28%
Net periodic benefit cost assumptions:
Discount rate	2.50%	3.28%	4.25%
Expected rate of return on plan assets	5.75%	6.50%	6.50%