TREASURY STOCK (Details) - USD ($)	1 Months Ended	3 Months Ended
	Dec. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock through authorized stock repurchase programs (in shares)		678,000	1,619,000
Repurchase of common stock through authorized stock repurchase programs		$ 1,251,000,000	$ 2,856,000,000
Repurchase of common stock through general authorization for shares withheld on stock award vesting (in shares)		77,000	71,000
Repurchase of common stock through general authorization for shares withheld on stock award vesting		$ 129,000,000	$ 121,000,000
Treasury stock repurchased but unsettled by period end, amount	$ 40,000,000
Payments related to tax withholding for share-based compensation		$ 119,000,000	$ 111,000,000
Treasury stock, shares (in shares)	21,762,070	22,439,549
2019 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Remaining authorization to repurchase common stock	$ 11,500,000,000	$ 10,400,000,000
Amount of common stock repurchases authorized				$ 15,000,000,000.0
Common Stock Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock through authorized stock repurchase programs (in shares)		601,000	1,548,000
Repurchase of common stock through authorized stock repurchase programs		$ 1,122,000,000	$ 2,735,000,000