Employee Benefit Plans (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)
Total Pension Benefits | Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan assets contributions by employer	$ 3	$ 8
Expected future benefit payment, remainder of fiscal year	5	5
Total estimated contributions by employer during fiscal year	13	$ 13
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	14	39
Expected future benefit payment, remainder of fiscal year	50	50
Total estimated contributions by employer during fiscal year	11	11
Postemployment benefits, period expense	$ 2	$ 32