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Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Goodwill (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Jan. 31, 2020	Dec. 31, 2019
Goodwill
Balance at the beginning of the period		$ 4,475	$ 4,933
Business disposition		(52)	(354)
Opening balance sheet adjustments		(1)	4
Effects of currency exchange		(3)	(108)
Balance at the end of the period		4,419	4,475
Goodwill		4,475	4,933		$ 4,419
Beverage Asia Pacific/AMEA
Goodwill
Balance at the end of the period		27
Impairment of property, plant and equipment and intangible assets		64
Percentage of fair value exceeding carrying value					35.00%
Impairment of goodwill		64
Goodwill		27			$ 27
Beverage packaging, North And Central America
Goodwill
Balance at the beginning of the period		1,275	1,275
Balance at the end of the period		1,275	1,275
Goodwill		1,275	1,275		1,275
Beverage packaging, South America
Goodwill
Balance at the beginning of the period		1,299	1,299
Opening balance sheet adjustments		(1)
Balance at the end of the period		1,298	1,299
Goodwill		1,298	1,299		1,298
Beverage packaging, Europe
Goodwill
Balance at the beginning of the period		1,435	1,531
Opening balance sheet adjustments			4
Effects of currency exchange		(2)	(100)
Balance at the end of the period		1,433	1,435
Goodwill		1,433	1,435		1,433
Aerospace
Goodwill
Balance at the beginning of the period		40	40
Balance at the end of the period		40	40
Goodwill		40	40		40
Ball Beverage Packaging Amea Limited [Member]
Goodwill
Balance at the end of the period		102
Goodwill		102			102
Beverage Packaging Asia [Member]
Goodwill
Balance at the end of the period		27
Goodwill		27			27
Beverage Packaging, Other Segment [Member] \| Subsequent Event.
Goodwill
Goodwill				$ 62
Other
Goodwill
Balance at the beginning of the period		426	788
Business disposition		(52)	(354)
Effects of currency exchange		(1)	(8)
Balance at the end of the period		373	426
Goodwill		373	$ 426		$ 373
US steel food and steel aerosol packaging
Goodwill
Business disposition	$ (354)
Beverage packaging China
Goodwill
Business disposition		(51)
Steel Aerosol Packaging Business In Argentina [Member]
Goodwill
Business disposition		$ (1)