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Employee Benefit Obligations - Components of net periodic benefit cost (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2018
Ball-sponsored plans:          
Total net periodic benefit cost $ 17 $ 23 $ 33 $ 46  
Cost of sales and SG&A          
Ball-sponsored plans:          
Non-service pension income (cost)   (6)   12  
Selling, general and administrative          
Ball-sponsored plans:          
Non-service pension income (cost) 2   3    
Ball Sponsored Plans          
Ball-sponsored plans:          
Service cost 18 16 35 32  
Interest cost 42 55 84 110  
Expected return on plan assets (55) (59) (109) (118)  
Amortization of prior service cost 1 1 1 1  
Recognized net actuarial loss 10 9 21 19  
Net periodic benefit cost for Ball sponsored plans 16 22 32 44  
Multi-employer Plans          
Ball-sponsored plans:          
Net periodic benefit cost for multiemployer plans 1 1 1 2  
Defined Benefit Pension Plans | German Swedish And Certain U S Plans | Unfunded Plan          
Ball-sponsored plans:          
Payments to participants     10 12  
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     4 110  
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 21 22 41 44  
U.S. | Ball Sponsored Plans          
Ball-sponsored plans:          
Service cost 14 12 27 24  
Interest cost 24 33 48 66  
Expected return on plan assets (28) (33) (55) (66)  
Amortization of prior service cost 1 1 1 1  
Recognized net actuarial loss 9 8 19 17  
Net periodic benefit cost for Ball sponsored plans 20 21 40 42  
U.S. | Multi-employer Plans          
Ball-sponsored plans:          
Net periodic benefit cost for multiemployer plans 1 1 1 2  
Foreign          
Ball-sponsored plans:          
Total net periodic benefit cost (4) 1 (8) 2  
Foreign | Ball Sponsored Plans          
Ball-sponsored plans:          
Service cost 4 4 8 8  
Interest cost 18 22 36 44  
Expected return on plan assets (27) (26) (54) (52)  
Recognized net actuarial loss 1 1 2 2  
Net periodic benefit cost for Ball sponsored plans $ (4) $ 1 $ (8) $ 2