Subsidiary Guarantees of Debt - Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	$ 434	$ 261
Cash flows from investing activities
Capital expenditures	(444)	(240)
Business dispositions, net of cash sold	(45)
Business dispositions, net of cash sold		31
Other, net	39	2
Cash provided by (used in) investing activities	(450)	(207)
Cash Flows from Financing Activities
Long-term borrowings	1,426	290
Repayments of long-term borrowings	(840)	(561)
Net change in short-term borrowings	(165)	91
Proceeds from issuances of common stock	9	14
Acquisitions of treasury stock	(184)	(3)
Common stock dividends	(70)	(58)
Other, net	(12)	(1)
Cash provided by (used in) financing activities	164	(228)
Effect of exchange rate changes on cash	(50)	8
Cash and cash equivalents – beginning of year	448	597
Cash and cash equivalents – end of year	549	433
Change in cash, cash equivalents and restricted cash	98	(166)
Cash, cash equivalents and restricted cash - beginning of period	459	607
Cash, cash equivalents and restricted cash - end of period	557	441
Ball Corporation
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	(59)	219
Cash flows from investing activities
Capital expenditures	(4)	(15)
Business dispositions, net of cash sold	(45)
Other, net		2
Cash provided by (used in) investing activities	(49)	(13)
Cash Flows from Financing Activities
Long-term borrowings	1,425	290
Repayments of long-term borrowings	(835)	(325)
Net change in short-term borrowings	(111)	131
Proceeds from issuances of common stock	9	14
Acquisitions of treasury stock	(184)	(3)
Common stock dividends	(70)	(58)
Intercompany	(82)	(252)
Other, net	(11)
Cash provided by (used in) financing activities	141	(203)
Effect of exchange rate changes on cash	(4)
Cash and cash equivalents – beginning of year	5
Cash and cash equivalents – end of year	34
Change in cash, cash equivalents and restricted cash	29	3
Cash, cash equivalents and restricted cash - beginning of period	5	1
Cash, cash equivalents and restricted cash - end of period	34	4
Guarantor Subsidiaries
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	(120)	196
Cash flows from investing activities
Capital expenditures	(265)	(139)
Business dispositions, net of cash sold		31
Other, net	10	16
Cash provided by (used in) investing activities	(255)	(92)
Cash Flows from Financing Activities
Long-term borrowings	1
Repayments of long-term borrowings	(1)
Net change in short-term borrowings		1
Intercompany	377	(92)
Other, net	(1)	(1)
Cash provided by (used in) financing activities	376	(92)
Cash and cash equivalents – end of year	1
Change in cash, cash equivalents and restricted cash	1	12
Cash, cash equivalents and restricted cash - beginning of period		(10)
Cash, cash equivalents and restricted cash - end of period	1	2
Non-Guarantor Subsidiaries
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	613	(154)
Cash flows from investing activities
Capital expenditures	(175)	(86)
Other, net	29	(16)
Cash provided by (used in) investing activities	(146)	(102)
Cash Flows from Financing Activities
Repayments of long-term borrowings	(4)	(236)
Net change in short-term borrowings	(54)	(41)
Intercompany	(295)	344
Cash provided by (used in) financing activities	(353)	67
Effect of exchange rate changes on cash	(46)	8
Cash and cash equivalents – beginning of year	443
Cash and cash equivalents – end of year	514
Change in cash, cash equivalents and restricted cash	68	(181)
Cash, cash equivalents and restricted cash - beginning of period	454	616
Cash, cash equivalents and restricted cash - end of period	$ 522	$ 435