INCOME TAXES - Unrecognized Tax Benefit (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Gross unrecognized tax benefits - January 1	$ 87	$ 121	$ 103
Increases related to tax positions from prior years	1	3	25
Decreases related to tax positions from prior years	(1)	(15)	(4)
Increases related to tax provisions taken during the current year	2	7	7
Settlements with tax authorities	0	(22)	(2)
Lapses of statutes of limitation	(1)	(7)	(8)
Distributions to NCR Atleos	(30)	0	0
Total gross unrecognized tax benefits - December 31	$ 58	$ 87	$ 121