Employee Benefit Plans (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)
Total Pension Benefits | Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan assets contributions by employer	$ 3	$ 6
Expected future benefit payment, remainder of fiscal year	6	6
Total estimated contributions by employer during fiscal year	12	$ 12
Total Pension Benefits | United States | NCR Atleos Corporation
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions required, percent of annual costs		50.00%
Contributions by spinoff, threshold		$ 40
Postemployment Retirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan assets contributions by employer	8	13
Expected future benefit payment, remainder of fiscal year	21	21
Total estimated contributions by employer during fiscal year	$ 8	$ 8