v3.26.1
Accumulated Other Comprehensive Income - Reclassifications Out of AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Interest expense $ 62 $ 69 $ 125 $ 136
Other income (expense), net (4) 7 8 3
Total before tax 90 57 123 79
Tax expense (25) (19) (36) (28)
Net income attributable to Atleos 65 39 87 53
Cost of services        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Cost of services (613) (633) (1,234) (1,220)
Reclassification out of Accumulated Other Comprehensive Income        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Interest expense 1   1 1
Other income (expense), net     (1) 1
Total before tax 2 (2) 4 (15)
Tax expense 0 0 (1) 3
Net income attributable to Atleos 2 (2) 3 (12)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Actuarial Loss (Gain)        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Interest expense 0   0 0
Other income (expense), net     (1) 1
Total before tax 0 1 (1) 1
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Prior Service Benefit        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Interest expense 0   0 0
Other income (expense), net     0 0
Total before tax 0 0 0 0
Reclassification out of Accumulated Other Comprehensive Income | Effective Cash Flow Hedge Loss (Gain)        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Interest expense 1   1 1
Other income (expense), net     0 0
Total before tax 2 (3) 5 (16)
Reclassification out of Accumulated Other Comprehensive Income | Cost of services        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Cost of services 3 (3) 6 (15)
Other income (expense), net   1    
Reclassification out of Accumulated Other Comprehensive Income | Cost of services | Amortization of Actuarial Loss (Gain)        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Cost of services 0 0 0 0
Other income (expense), net   1    
Reclassification out of Accumulated Other Comprehensive Income | Cost of services | Amortization of Prior Service Benefit        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Cost of services 0 0 0 0
Other income (expense), net   0    
Reclassification out of Accumulated Other Comprehensive Income | Cost of services | Effective Cash Flow Hedge Loss (Gain)        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Cost of services $ 3 (3) $ 6 $ (15)
Other income (expense), net   $ 0