INCOME TAXES - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Line Items]
Spin-off of NCR Atleos	$ 226	$ 0	$ 0
Valuation allowances	20	103	56
Valuation allowance against interest expense deduction carryforwards	20	103
Income tax expense, continuing operations, discontinued operations	226
Undistributed earnings of foreign subsidiaries			258
Undistributed foreign earnings			19
U.S. federal and foreign tax attribute carryforwards	622
Total amount of gross unrecognized tax benefits that would affect NCR's effective tax rate if realized	44
Recognized interest and penalties expense (benefit) associated with uncertain tax positions	4	(1)	$ 0
Interest and penalties accrued associated with uncertain tax positions	18	$ 26
Minimum
Income Tax Disclosure [Line Items]
Significant change in unrecognized tax benefits is reasonably possible, estimated range of change, upper bound	6
Maximum
Income Tax Disclosure [Line Items]
Significant change in unrecognized tax benefits is reasonably possible, estimated range of change, upper bound	8
Domestic Tax Authority
Income Tax Disclosure [Line Items]
Tax credit carryforward, amount	$ 105