Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details) $ in Millions		3 Months Ended			6 Months Ended
	Oct. 02, 2023	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Cyber ransomware incident recovery costs					$ 44
Proceeds from insurance settlement, investing activities					20
Insurance settlements receivable		$ 5			5
Compensation expense				$ 10
Revenue		876	$ 946		1,734	$ 1,852
Accounts receivable		429			429		$ 472
Contract liabilities		230			230		187
Total assets		4,783			4,783		4,990
Total liabilities		(4,594)			(4,594)		(4,689)
Total equity		(87)			(87)		25
Cumulative fraudulent ACH disbursements		34			34
Recovered fraudulent ACH disbursements		13			13
Revenue recognized that was included in contract liabilities					102	88
Remaining performance obligations		1,200			1,200
Capitalized software development costs for software sold to customers		486			486		486
Adjustment
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue		(10)	$ 0			$ 0
Accounts receivable		(5)			(5)
Contract liabilities		$ 5			$ 5
Total assets							12
Total liabilities							7
Total equity							$ 19
NCR Atleos Corporation | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Conversion ratio	0.50
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, percentage		0.75%			0.75%
Remaining performance obligation, expected timing of satisfaction		12 months			12 months