Consolidated Statements of Operations - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue by segment	$ 7,844,000,000	$ 7,156,000,000	$ 6,207,000,000
Selling, general and administrative expenses	1,152,000,000	1,151,000,000	1,069,000,000
Research and development expenses	217,000,000	268,000,000	234,000,000
Total operating expenses	7,355,000,000	6,682,000,000	5,986,000,000
Income from operations	489,000,000	474,000,000	221,000,000
Loss on extinguishment of debt	0	(42,000,000)	(20,000,000)
Interest expense	(285,000,000)	(238,000,000)	(218,000,000)
Other income (expense), net	7,000,000	90,000,000	(42,000,000)
Income (loss) from continuing operations before income taxes	211,000,000	284,000,000	(59,000,000)
Income tax expense (benefit)	148,000,000	186,000,000	(53,000,000)
Income (loss) from continuing operations	63,000,000	98,000,000	(6,000,000)
Loss (income) from discontinued operations	(4,000,000)	0	(72,000,000)
Net income (loss)	59,000,000	98,000,000	(78,000,000)
Net income (loss) attributable to noncontrolling interests	(1,000,000)	1,000,000	1,000,000
Net income (loss) attributable to NCR	60,000,000	97,000,000	(79,000,000)
Amounts attributable to NCR common stockholders:
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)
Income (loss) from continuing operations attributable to NCR	48,000,000	81,000,000	(38,000,000)
Income (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)
Income (loss) per common share from continuing operations
Basic (in dollars per share)	$ 0.35	$ 0.62	$ (0.30)
Diluted (in dollars per share)	0.34	0.58	(0.30)
Net income (loss) per common share
Basic (in dollars per share)	0.32	0.62	(0.86)
Diluted (in dollars per share)	$ 0.31	$ 0.58	$ (0.86)
Weighted average common shares outstanding
Basic (in shares)	136.7	131.2	128.4
Diluted (net income)	141.2	139.0	128.4
Product
Revenue by segment	$ 2,351,000,000	$ 2,193,000,000	$ 2,005,000,000
Cost of products	2,097,000,000	1,850,000,000	1,733,000,000
Service
Revenue by segment	5,493,000,000	4,963,000,000	4,202,000,000
Cost of products	$ 3,889,000,000	$ 3,413,000,000	$ 2,950,000,000