TREASURY STOCK - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Aug. 31, 2015	Aug. 31, 2014
Equity, Class of Treasury Stock [Line Items]
Treasury stock, authorized amount	$ 1,000,000,000.0
Shares repurchased	0	0	0
August 2015 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Treasury stock, authorized amount				$ 500,000,000.0
Treasury stock, remaining authorized amount	$ 197,800,000
August 2014 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Treasury stock, authorized amount					$ 500,000,000.0