Subsidiary Guarantees of Debt (Details 3) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	$ 211.7	$ 210.0
Cash flows from investing activities
Capital expenditures	(227.7)	(135.3)
Business acquisition, net of cash acquired	(29.1)
Other, net	21.6	11.2
Cash provided by (used in) investing activities	(235.2)	(124.1)
Cash flows from financing activities
Long-term borrowings	2,315.0	396.9
Repayments of long-term borrowings	(2,308.1)	(761.8)
Net change in short-term borrowings	105.5	292.7
Proceeds from issuances of common stock	18.9	18.6
Acquisitions of treasury stock	(3.3)	(257.1)
Common dividends	(36.1)	(36.8)
Other, net	(41.0)	3.5
Cash provided by (used in) financing activities	50.9	(344.0)
Effect of exchange rate changes on cash	8.5	(2.6)
Change in cash and cash equivalents	35.9	(260.7)
Cash and cash equivalents - beginning of period	191.4	416.0
Cash and cash equivalents - end of period	227.3	155.3
Ball Corporation
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	(31.9)	(19.3)
Cash flows from investing activities
Capital expenditures	(4.1)	(6.0)
Other, net	8.9	0.7
Cash provided by (used in) investing activities	4.8	(5.3)
Cash flows from financing activities
Long-term borrowings	2,300.0	375.0
Repayments of long-term borrowings	(2,200.3)	(640.4)
Net change in short-term borrowings	112.1	49.0
Proceeds from issuances of common stock	18.9	18.6
Acquisitions of treasury stock	(3.3)	(257.1)
Common dividends	(36.1)	(36.8)
Intercompany	(130.3)	292.7
Other, net	(31.6)	9.5
Cash provided by (used in) financing activities	29.4	(189.5)
Effect of exchange rate changes on cash	(1.2)	(0.2)
Change in cash and cash equivalents	1.1	(214.3)
Cash and cash equivalents - beginning of period	1.5	218.6
Cash and cash equivalents - end of period	2.6	4.3
Guarantor Subsidiaries
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	226.2	204.9
Cash flows from investing activities
Capital expenditures	(98.6)	(57.9)
Business acquisition, net of cash acquired	(29.1)
Other, net	12.3	2.7
Cash provided by (used in) investing activities	(115.4)	(55.2)
Cash flows from financing activities
Repayments of long-term borrowings		(0.3)
Net change in short-term borrowings	(7.4)	5.8
Intercompany	(103.4)	(155.2)
Other, net	(0.4)
Cash provided by (used in) financing activities	(111.2)	(149.7)
Change in cash and cash equivalents	(0.4)
Cash and cash equivalents - beginning of period	0.4	0.3
Cash and cash equivalents - end of period		0.3
Non-Guarantor Subsidiaries
Subsidiary Guarantees of Debt
Cash provided by (used in) operating activities	17.4	24.4
Cash flows from investing activities
Capital expenditures	(125.0)	(71.4)
Other, net	0.4	7.8
Cash provided by (used in) investing activities	(124.6)	(63.6)
Cash flows from financing activities
Long-term borrowings	15.0	21.9
Repayments of long-term borrowings	(107.8)	(121.1)
Net change in short-term borrowings	0.8	237.9
Intercompany	233.7	(137.5)
Other, net	(9.0)	(6.0)
Cash provided by (used in) financing activities	132.7	(4.8)
Effect of exchange rate changes on cash	9.7	(2.4)
Change in cash and cash equivalents	35.2	(46.4)
Cash and cash equivalents - beginning of period	189.5	197.1
Cash and cash equivalents - end of period	$ 224.7	$ 150.7