SHARE-BASED COMPENSATION PLANS (employee stock purchase plan) (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jul. 31, 2019	Jan. 31, 2019	Jul. 31, 2018	Jan. 31, 2018	Jul. 31, 2017	Jan. 31, 2017
Employee stock purchase plan
Number of shares issued, employee stock purchase plan	65	53	46
Purchase price per share, employee stock purchase plan				$ 37.93	$ 39.92	$ 50.09	$ 63.13	$ 61.37	$ 61.92