INCOME TAXES - Income Tax Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income tax (benefit) expense at the U.S. federal tax rate of 21%	$ (42)	$ (114)	$ (67)
Foreign income tax differential	8	1	(4)
Additional U.S. tax on foreign income	(6)	14	(2)
State and local income taxes (net of federal effect)	2	(3)	2
Other U.S. permanent book/tax differences	1	4	4
Meals and entertainment expense	1	2	1
Cash surrender value received as income	4	0	0
Nondeductible transaction costs	0	2	1
Nondeductible executive compensation	(1)	17	9
Dispositions	0	16	0
Spin-off of NCR Atleos	0	226	0
Gains/losses on internal entity restructuring	(4)	0	0
Excess (benefit)/deficit from share-based payments	8	2	0
Research and development tax credits	(3)	(2)	(5)
Foreign tax law changes	(7)	(8)	3
Valuation allowances	57	31	117
Change in liability for unrecognized tax benefits	(9)	3	(15)
Change in tax estimates for prior periods	(6)	(5)	4
Other, net	1	(2)	4
Total income tax expense (benefit)	$ 4	$ 184	$ 52