v3.26.3
Accumulated Other Comprehensive Income - Reclassifications Out of AOCI (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other income (expense), net $ 7 $ (9) $ 15 $ (6)
Interest expense 61 68 186 204
Total before tax 129 33 252 112
Tax expense (32) (7) (68) (35)
Net income attributable to Atleos 97 26 184 79
Cost of services        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Cost of services (629) (631) (1,863) (1,851)
Reclassification out of Accumulated Other Comprehensive Income        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other income (expense), net (1)   (2)  
Interest expense 0 1 1 2
Total before tax 0 (3) 4 (18)
Tax expense 1 1 0 4
Net income attributable to Atleos 1 (2) 4 (14)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Actuarial Loss (Gain)        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other income (expense), net (1)   (2)  
Interest expense 0 0 0 0
Total before tax (1) 0 (2) 1
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Prior Service Benefit        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other income (expense), net 0   0  
Interest expense 0 0 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]        
Other income (expense), net 0   0  
Interest expense 0 1 1 2
Total before tax 1 (3) 6 (19)
Reclassification out of Accumulated Other Comprehensive Income | Cost of services        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Cost of services 1 (2) 7 (16)
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 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
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 $ 1 $ (2) $ 7 $ (17)