Description of the sources of revenue included in the "all other" segments category.

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Name:	us-gaap_SegmentReportingDescriptionOfAllOtherSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Segment Information - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Intercompany profit eliminated	$ 3	$ 1	$ 7	$ 5
Non-reportable segments
Segment Reporting Information [Line Items]
Segment description			The primary sources of revenue included in non-reportable segments are the Company's aerosol can businesses in North America and Europe, its food can business in North America, its promotional packaging business in Europe and its tooling and equipment operations in the U.S. and U.K.