COMMITMENTS AND CONTINGENCIES 7 (Details) - $ / claims	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Resolution Values Per Claim [Line Items]
Malignant claims	61,500	50,200	55,300	56,000	44,000
Nonmalignant claims	550	3,900	4,700	2,800	4,485