Discontinued Operations - Major Categories of Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) from discontinued operations	$ (1)	$ 17	$ 2	$ 47
Net income (loss) attributable to noncontrolling interests	0	0	0	(1)
Income (loss) from discontinued operations, net of tax attributable to NCR Voyix common stockholders	$ (1)	17	2	48
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | Digital Banking Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue of business segment sold		154		301
Selling, general and administrative expenses		23		44
Research and development expenses		11		24
Total operating expenses		123		246
Income (loss) from discontinued operations before income taxes		31		55
Income tax expense (benefit)		14		6
Income (loss) from discontinued operations, net of tax attributable to NCR Voyix common stockholders		17		49
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | Spin-Off of Atleos
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue of business segment sold		1	0	6
Selling, general and administrative expenses		0	0	1
Total operating expenses		1	0	8
Income from discontinued operations		0	0	(2)
Other income (expense), net		0	0	(1)
Income (loss) from discontinued operations before income taxes		0	0	(3)
Income tax expense (benefit)		0	0	(1)
Net income (loss) from discontinued operations		0	0	(2)
Net income (loss) attributable to noncontrolling interests		0	0	(1)
Income (loss) from discontinued operations, net of tax attributable to NCR Voyix common stockholders		0	0	(1)
Product | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | Digital Banking Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue of business segment sold		12		23
Costs of products and services sold		10		22
Product | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | Spin-Off of Atleos
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue of business segment sold		0	0	1
Costs of products and services sold		0	0	1
Service | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | Digital Banking Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue of business segment sold		142		278
Costs of products and services sold		79		156
Service | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | Spin-Off of Atleos
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue of business segment sold		1	0	5
Costs of products and services sold		$ 1	$ 0	$ 6