STOCKHOLDERS' EQUITY - Stock Repurchase Program (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Jan. 31, 2019
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock	$ 100,000,000.0	$ 0
Repurchase Program | Common Stock
Equity, Class of Treasury Stock [Line Items]
Amount of share repurchases authorized	7,500,000,000
Stock repurchase program, increased to authorized amount			$ 2,000,000,000.0
Remaining amount of share repurchases authorized	$ 1,600,000,000