Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Total revenue	$ 1,997	$ 1,677	$ 3,863	$ 3,221
Selling, general and administrative expenses	309	303	622	541
Research and development expenses	59	69	124	135
Total operating expenses	1,894	1,593	3,727	3,027
Income (loss) from operations	103	84	136	194
Interest expense	(67)	(61)	(130)	(106)
Other income (expense), net	1	(1)	10	(18)
Income (loss) from continuing operations before income taxes	37	22	16	70
Income tax expense (benefit)	0	31	13	48
Income (loss) from continuing operations	37	(9)	3	22
Income (loss) from discontinued operations, net of tax	6	0	5	0
Net income (loss)	43	(9)	8	22
Net income (loss) attributable to noncontrolling interests	2	0	1	1
Net income (loss) attributable to NCR	41	(9)	7	21
Amounts attributable to NCR common stockholders:
Income (loss) from continuing operations	35	(9)	2	21
Series A convertible preferred stock dividends	(4)	(4)	(8)	(8)
Income (loss) from continuing operations attributable to NCR common stockholders	31	(13)	(6)	13
Income (loss) from discontinued operations, net of tax	6	0	5	0
Net income (loss) attributable to NCR common stockholders	$ 37	$ (13)	$ (1)	$ 13
Income (loss) per common share from continuing operations
Basic (in dollars per share)	$ 0.23	$ (0.10)	$ (0.04)	$ 0.10
Diluted (in dollars per share)	0.22	(0.10)	(0.04)	0.10
Net income (loss) per common share
Basic (in dollars per share)	0.27	(0.10)	(0.01)	0.10
Diluted (in dollars per share)	$ 0.26	$ (0.10)	$ (0.01)	$ 0.10
Weighted average common shares outstanding
Basic (in shares)	136.6	131.0	136.2	130.5
Diluted (in shares)	140.8	131.0	136.2	136.1
Product
Total revenue	$ 614	$ 551	$ 1,130	$ 1,033
Cost of revenue	544	453	1,036	861
Services
Total revenue	1,383	1,126	2,733	2,188
Cost of revenue	$ 982	$ 768	$ 1,945	$ 1,490