Employee Benefit Obligations (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($) plan	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) plan	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Employee Benefit Obligations
Underfunded defined benefit pension liabilities	$ 1,178		$ 1,178		$ 705
Less current portion and prepaid pension assets	(208)		(208)		(17)
Long-term defined benefit pension liabilities	970		970		688
Retiree medical and other postemployment benefits	251		251		148
Deferred compensation plans	263		263		281
Other	43		43		30
Employee benefit obligations	1,527		1,527		$ 1,147
Defined Benefit Pension Plans
Employee Benefit Obligations
Net periodic benefit cost for multiemployer plans		$ 1	1	$ 1
Total net periodic benefit cost	101	23	123	46
Ball-sponsored plans:
Service cost	15	17	30	33
Interest cost	20	18	39	38
Expected return on plan assets	(23)	(25)	(45)	(50)
Amortization of prior service cost			(1)	(1)
Recognized net actuarial loss	9	12	19	25
Settlements/curtailments/special termination	80		80
Net periodic benefit cost for Ball-sponsored plans	101	22	122	45
U.S.
Employee Benefit Obligations
Net periodic benefit cost for multiemployer plans		1	1	1
Total net periodic benefit cost	17	18	34	35
Ball-sponsored plans:
Service cost	12	13	24	26
Interest cost	15	14	30	29
Expected return on plan assets	(18)	(20)	(36)	(40)
Amortization of prior service cost			(1)	(1)
Recognized net actuarial loss	8	10	16	20
Net periodic benefit cost for Ball-sponsored plans	17	17	33	34
Foreign
Employee Benefit Obligations
Total net periodic benefit cost	84	5	89	11
Ball-sponsored plans:
Service cost	3	4	6	7
Interest cost	5	4	9	9
Expected return on plan assets	(5)	(5)	(9)	(10)
Recognized net actuarial loss	1	2	3	5
Settlements/curtailments/special termination	80		80
Net periodic benefit cost for Ball-sponsored plans	84	$ 5	89	$ 11
German Plans
Employee Benefit Obligations
Expected benefit payments to plan participants for the full year	18		18
Ball-sponsored plans:
Contributions to pension plans			9
Excluding German Plans
Ball-sponsored plans:
Contributions to pension plans			28
Expected contributions to pension plans for the full year	$ 260		$ 260
Rexam | Rexam Pension Plan
Ball-sponsored plans:
Number of defined benefit plans acquired | plan	11		11
Rexam | Rexam Retiree Medical Plan
Ball-sponsored plans:
Number of defined benefit plans acquired | plan	2		2
Rexam | Rexam U K Pension Plan
Ball-sponsored plans:
Rexam escrow cash account	$ 173		$ 173