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Employee Benefit Obligations - Components of net periodic benefit cost (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2018
Ball-sponsored plans:      
Total net periodic benefit cost $ 16 $ 23  
Non-service pension income (cost) 1 (6)  
Ball Sponsored Plans      
Ball-sponsored plans:      
Service cost 17 16  
Interest cost 42 55  
Expected return on plan assets (54) (59)  
Recognized net actuarial loss 11 10  
Net periodic benefit cost for Ball sponsored plans 16 22  
Multi-employer Plans      
Ball-sponsored plans:      
Net periodic benefit cost for multiemployer plans   1  
Defined Benefit Pension Plans | German Swedish And Certain U S Plans | Unfunded Plan      
Ball-sponsored plans:      
Payments to participants 5 6  
Defined Benefit Pension Plans | German Swedish And Certain U S Plans | Forecast | Unfunded Plan      
Ball-sponsored plans:      
Expected benefit payments to plan participants for the full year     $ 21
Defined Benefit Pension Plans | Excluding German Swedish And Certain U S Plans      
Ball-sponsored plans:      
Contributions to pension plans 3 8  
Defined Benefit Pension Plans | Excluding German Swedish And Certain U S Plans | Forecast      
Ball-sponsored plans:      
Expected contributions to pension plans for the full year     $ 45
U.S.      
Ball-sponsored plans:      
Total net periodic benefit cost 20 22  
U.S. | Ball Sponsored Plans      
Ball-sponsored plans:      
Service cost 13 12  
Interest cost 24 33  
Expected return on plan assets (27) (33)  
Recognized net actuarial loss 10 9  
Net periodic benefit cost for Ball sponsored plans 20 21  
U.S. | Multi-employer Plans      
Ball-sponsored plans:      
Net periodic benefit cost for multiemployer plans   1  
Foreign      
Ball-sponsored plans:      
Total net periodic benefit cost (4) 1  
Foreign | Ball Sponsored Plans      
Ball-sponsored plans:      
Service cost 4 4  
Interest cost 18 22  
Expected return on plan assets (27) (26)  
Recognized net actuarial loss 1 1  
Net periodic benefit cost for Ball sponsored plans $ (4) $ 1