Subsidiary Guarantees of Debt - Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	$ 1,548	$ 1,566	$ 1,478
Cash flows from investing activities
Capital expenditures	(598)	(816)	(556)
Proceeds from business dispositions, net of cash sold	160	539	(2)
Other, net	16	71	13
Cash provided by (used in) investing activities	(422)	(206)	(545)
Cash Flows from Financing Activities
Long-term borrowings	2,819	1,475	765
Repayments of long-term borrowings	(1,524)	(1,533)	(1,810)
Net change in short-term borrowings	(183)	(120)	184
Proceeds from issuances of common stock, net of shares used for taxes	19	28	27
Acquisitions of treasury stock	(964)	(739)	(103)
Common stock dividends	(182)	(137)	(129)
Other, net	(31)	(14)	(7)
Cash provided by (used in) financing activities	(46)	(1,040)	(1,073)
Effect of exchange rate changes on cash	(2)	(51)	(8)
Change in cash, cash equivalents and restricted cash	1,078	269	(148)
Cash, cash equivalents and restricted cash - beginning of period	728	459	607
Cash, cash equivalents and restricted cash - end of period	1,806	728	459
Ball Corporation \| Reportable Legal Entities
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	(353)	6	234
Cash flows from investing activities
Capital expenditures	(17)	(10)	(6)
Proceeds from business dispositions, net of cash sold		(65)	17
Other, net	(5)	(4)	(2)
Cash provided by (used in) investing activities	(22)	(79)	9
Cash Flows from Financing Activities
Long-term borrowings	2,813	1,475	765
Repayments of long-term borrowings	(1,516)	(1,525)	(741)
Net change in short-term borrowings	(174)	(73)	174
Proceeds from issuances of common stock, net of shares used for taxes	19	28	27
Acquisitions of treasury stock	(964)	(739)	(103)
Common stock dividends	(182)	(137)	(129)
Intercompany	1,283	1,054	(226)
Other, net	(31)	(11)
Cash provided by (used in) financing activities	1,248	72	(233)
Effect of exchange rate changes on cash			(6)
Change in cash, cash equivalents and restricted cash	873	(1)	4
Cash, cash equivalents and restricted cash - beginning of period	4	5	1
Cash, cash equivalents and restricted cash - end of period	877	4	5
Guarantor Subsidiaries
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	752	237	742
Cash flows from investing activities
Capital expenditures	(245)	(431)	(301)
Proceeds from business dispositions, net of cash sold		604	31
Other, net	6	47	31
Cash provided by (used in) investing activities	(239)	220	(239)
Cash Flows from Financing Activities
Net change in short-term borrowings			1
Intercompany	(513)	(456)	(491)
Other, net		(1)	(3)
Cash provided by (used in) financing activities	(513)	(457)	(493)
Effect of exchange rate changes on cash			1
Change in cash, cash equivalents and restricted cash			11
Cash, cash equivalents and restricted cash - beginning of period			(11)
Non-Guarantor Subsidiaries
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	1,149	1,323	502
Cash flows from investing activities
Capital expenditures	(336)	(375)	(249)
Proceeds from business dispositions, net of cash sold	160		(50)
Other, net	15	28	(16)
Cash provided by (used in) investing activities	(161)	(347)	(315)
Cash Flows from Financing Activities
Long-term borrowings	6
Repayments of long-term borrowings	(8)	(8)	(1,069)
Net change in short-term borrowings	(9)	(47)	9
Intercompany	(770)	(598)	717
Other, net		(2)	(4)
Cash provided by (used in) financing activities	(781)	(655)	(347)
Effect of exchange rate changes on cash	(2)	(51)	(3)
Change in cash, cash equivalents and restricted cash	205	270	(163)
Cash, cash equivalents and restricted cash - beginning of period	724	454	617
Cash, cash equivalents and restricted cash - end of period	$ 929	$ 724	$ 454

The net cash inflow or outflow from the entity's subsidiaries.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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The cash outflow to reacquire common stock during the period.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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The cash inflow from the additional capital contribution to the entity.

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