TREASURY STOCK - Narrative (Details) - USD ($)	9 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity, Class of Treasury Stock [Line Items]
Remittances of employee withholding taxes		$ 141,000,000	$ 151,000,000	$ 163,000,000
Treasury stock, shares (in shares)	22,446,897	22,446,897	21,762,070
2019 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Remaining authorization to repurchase common stock	$ 10,400,000,000	$ 10,400,000,000	$ 11,500,000,000
Amount of common stock repurchases authorized			$ 15,000,000,000.0
Shares repurchased (in shares)	0