Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	$ (333)	$ (309)	$ (625)	$ (622)
Research and development expenses	(57)	(59)	(121)	(124)
Interest expense	(91)	(67)	(174)	(130)
Total before tax	19	37	29	3
Tax expense	(30)	0	(44)	(13)
Net income (loss) attributable to NCR common stockholders	15	37	20	(1)
Product
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(478)	(544)	(934)	(1,036)
Cost of services
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(970)	(982)	(1,939)	(1,945)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	0	0	0	0
Research and development expenses	0		0	0
Interest expense	(5)	0	(9)
Total before tax	(26)	5	(46)	5
Tax expense	5	(1)	10	(1)
Net income (loss) attributable to NCR common stockholders	(21)	4	(36)	4
Reclassification out of Accumulated Other Comprehensive Income | Product
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	0	0	0	0
Research and development expenses		0
Reclassification out of Accumulated Other Comprehensive Income | Cost of services
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(21)	5	(37)	5
Amortization of Actuarial Loss (Gain) | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	0	0	0	0
Research and development expenses	0		0	0
Interest expense	0	0	0
Total before tax	(1)	0	(2)	0
Amortization of Actuarial Loss (Gain) | Reclassification out of Accumulated Other Comprehensive Income | Product
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	0	0	0	0
Research and development expenses		0
Amortization of Actuarial Loss (Gain) | Reclassification out of Accumulated Other Comprehensive Income | Cost of services
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(1)	0	(2)	0
Amortization of Prior Service Benefit | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	0	0	0	0
Research and development expenses	0		0	0
Interest expense	0	0	0
Total before tax	(1)	0	(1)	(1)
Amortization of Prior Service Benefit | Reclassification out of Accumulated Other Comprehensive Income | Product
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	0	0	0	0
Research and development expenses		0
Amortization of Prior Service Benefit | Reclassification out of Accumulated Other Comprehensive Income | Cost of services
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(1)	0	(1)	(1)
Effective Cash Flow Hedge Loss (Gain) | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	0	0	0	0
Research and development expenses	0		0	0
Interest expense	(5)	0	(9)
Total before tax	(24)	5	(43)	6
Effective Cash Flow Hedge Loss (Gain) | Reclassification out of Accumulated Other Comprehensive Income | Product
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	0	0	0	0
Research and development expenses		0
Effective Cash Flow Hedge Loss (Gain) | Reclassification out of Accumulated Other Comprehensive Income | Cost of services
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	$ (19)	$ 5	$ (34)	$ 6