Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	$ (331)	$ (264)	$ (956)	$ (886)
Research and development expenses	(54)	(40)	(175)	(164)
Interest expense (3)	(85)	(74)	(259)	(204)
Total before tax	(123)	69	(94)	72
Tax expense	(236)	(43)	(280)	(56)
Net income (loss) attributable to NCR common stockholders	(128)	65	(108)	64
Product
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(465)	(524)	(1,399)	(1,560)
Cost of services
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Cost of revenue	(925)	(957)	(2,864)	(2,902)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses	(1)	0	(1)	0
Research and development expenses	0		0	0
Interest expense (3)	(22)	(5)	(31)	(5)
Total before tax	(123)	(9)	(169)	(4)
Tax expense	30	1	40	0
Net income (loss) attributable to NCR common stockholders	(93)	(8)	(129)	(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	(100)	(4)	(137)	1
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	(1)	0	(1)	0
Research and development expenses	0		0	0
Interest expense (3)	0	0	0	0
Total before tax	(1)	0	(3)	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	0	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 (3)	0	0	0	0
Total before tax	0	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	0	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 (3)	(22)	(5)	(31)	(5)
Total before tax	(122)	(9)	(165)	(3)
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	$ (100)	$ (4)	$ (134)	$ 2