EARNINGS PER SHARE - Basic Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Income (loss) from continuing operations	$ 64,000,000	$ 97,000,000	$ (7,000,000)
Series A convertible preferred stock dividends	(16,000,000)	(16,000,000)	(31,000,000)
Net income (loss) from continuing operations attributable to NCR common stockholders	48,000,000	81,000,000	(38,000,000)
Loss from discontinued operations, net of tax	(4,000,000)	0	(72,000,000)
Net income (loss) attributable to NCR common stockholders	$ 44,000,000	$ 81,000,000	$ (110,000,000)
Denominator:
Basic (in shares)	136.7	131.2	128.4
Basic earnings (loss) per share:
Basic (in dollars per share)	$ 0.35	$ 0.62	$ (0.30)
From discontinued operations (in dollars per share)	(0.03)	0	(0.56)
Basic (in dollars per share)	$ 0.32	$ 0.62	$ (0.86)