STOCKHOLDERS' EQUITY - Treasury Stock Narrative (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Equity [Abstract]
Repurchase of common stock	$ 270	$ 320
Treasury stock purchased (in shares)	7,548,655

Number of shares that have been repurchased during the period and are being held in treasury.

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration