Segment Information and Concentrations - Revenue and Operating Income By Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Total revenue	$ 1,104	$ 1,080	$ 2,083	$ 2,129	$ 4,315
Less unallocated amounts
Corporate income and expenses not allocated to segments	78	72	155	146
Other income and expenses not allocated to segments	1	(3)	(1)	(7)
Interest expense	69	79	136	158	309
Interest income	(1)	(2)	(2)	(4)
Income tax expense	19	4	29	8	47
Depreciation and amortization expense	45	43	86	87
Acquisition-related amortization of intangibles	24	23	47	48
Stock-based compensation expense	8	9	17	19
Separation costs	6	6	8	15
Acquisition-related costs	1	(4)	1	(4)
Transformation and restructuring	(11)	6	(10)	7
Voyix environmental indemnification expense	1		5
Other (income) expense items, net	(1)	3
Net income attributable to Atleos	45	30	60	23	$ 93
Operating Segments
Segment Reporting Information [Line Items]
Total revenue	1,094	1,049	2,059	2,037
Less:
Adjusted cost of products	203	177	351	345
Adjusted cost of services	583	572	1,117	1,117
Adjusted SG& A and R&D expense	66	74	141	159
Other segment items	(42)	(40)	(81)	(80)
Total Segment Adjusted EBITDA	284	266	531	496
Segment Adjusted EBITDA	284	266	531	496
Less unallocated amounts
Net income attributable to Atleos				23
Other
Segment Reporting Information [Line Items]
Total revenue	10	31	24	92
Self-Service Banking \| Operating Segments
Segment Reporting Information [Line Items]
Total revenue	733	672	1,357	1,300
Less:
Adjusted cost of products	189	160	326	310
Adjusted cost of services	328	325	630	632
Adjusted SG& A and R&D expense	42	43	89	93
Other segment items	(15)	(13)	(30)	(26)
Total Segment Adjusted EBITDA	189	157	342	291
Segment Adjusted EBITDA	189	157	342	291
Network \| Operating Segments
Segment Reporting Information [Line Items]
Total revenue	320	326	618	635
Less:
Adjusted cost of products	13	13	23	29
Adjusted cost of services	227	214	430	419
Adjusted SG& A and R&D expense	20	24	43	53
Other segment items	(26)	(26)	(50)	(53)
Total Segment Adjusted EBITDA	86	101	172	187
Segment Adjusted EBITDA	86	101	172	187
T&T \| Operating Segments
Segment Reporting Information [Line Items]
Total revenue	41	51	84	102
Less:
Adjusted cost of products	1	4	2	6
Adjusted cost of services	28	33	57	66
Adjusted SG& A and R&D expense	4	7	9	13
Other segment items	(1)	(1)	(1)	(1)
Total Segment Adjusted EBITDA	9	8	17	18
Segment Adjusted EBITDA	$ 9	$ 8	$ 17	$ 18

NCR Atleos Corp 10-Q