Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Total revenue	$ 1,783,000,000	$ 1,550,000,000	$ 5,029,000,000	$ 4,604,000,000
Selling, general and administrative expenses	271,000,000	226,000,000	775,000,000	732,000,000
Research and development expenses	64,000,000	59,000,000	185,000,000	190,000,000
Asset Impairment Charges	0	0	0	183,000,000
Total operating expenses	1,611,000,000	1,425,000,000	4,600,000,000	4,476,000,000
Income (loss) from operations	172,000,000	125,000,000	429,000,000	128,000,000
Interest expense	(53,000,000)	(43,000,000)	(143,000,000)	(125,000,000)
Other expense, net	(11,000,000)	(10,000,000)	(28,000,000)	(24,000,000)
Income (loss) from continuing operations before income taxes	108,000,000	72,000,000	258,000,000	(21,000,000)
Income tax expense (benefit)	4,000,000	(15,000,000)	28,000,000	(20,000,000)
Income (loss) from continuing operations	104,000,000	87,000,000	230,000,000	(1,000,000)
Loss from discontinued operations, net of tax	(15,000,000)	(1,000,000)	(15,000,000)	(38,000,000)
Net income (loss)	89,000,000	86,000,000	215,000,000	(39,000,000)
Net income (loss) attributable to noncontrolling interests	(1,000,000)	2,000,000	0	2,000,000
Net income (loss) attributable to NCR	90,000,000	84,000,000	215,000,000	(41,000,000)
Amounts attributable to NCR common stockholders:
Income (loss) from continuing operations	105,000,000	85,000,000	230,000,000	(3,000,000)
Dividends on convertible preferred stock	(79,000,000)	(12,000,000)	(104,000,000)	(36,000,000)
Income (loss) from continuing operations attributable to NCR common stockholders	26,000,000	73,000,000	126,000,000	(39,000,000)
Loss from discontinued operations, net of tax	(15,000,000)	(1,000,000)	(15,000,000)	(38,000,000)
Net income (loss) attributable to NCR common stockholders	$ 11,000,000	$ 72,000,000	$ 111,000,000	$ (77,000,000)
Income (loss) per common share from continuing operations
Basic (in dollars per share)	$ 0.21	$ 0.62	$ 1.05	$ (0.33)
Diluted (in dollars per share)	0.21	0.57	1.03	(0.33)
Net income (loss) per common share
Basic (in dollars per share)	0.09	0.61	0.92	(0.65)
Diluted (in dollars per share)	$ 0.09	$ 0.56	$ 0.90	$ (0.65)
Weighted average common shares outstanding
Basic (in shares)	121.4	118.0	120.3	118.4
Diluted (in shares)	123.4	149.3	122.7	118.4
Product
Total revenue	$ 712,000,000	$ 534,000,000	$ 1,915,000,000	$ 1,585,000,000
Cost of revenue	555,000,000	473,000,000	1,547,000,000	1,344,000,000
Services
Total revenue	1,071,000,000	1,016,000,000	3,114,000,000	3,019,000,000
Cost of revenue	$ 721,000,000	$ 667,000,000	$ 2,093,000,000	$ 2,027,000,000