Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 208	$ 206	$ 489	$ 490
Other comprehensive income, net of tax:
Foreign currency translation adjustments	17	(45)	226	(170)
Pension and other postretirement benefits	23	2	40	25
Derivatives qualifying as hedges	4	2	12	26
Total other comprehensive income / (loss)	44	(41)	278	(119)
Total comprehensive income	252	165	767	371
Net income attributable to noncontrolling interests	(31)	(23)	(77)	(59)
Translation adjustments attributable to noncontrolling interests	(1)	0	(3)	0
Derivatives qualifying as hedges attributable to noncontrolling interests	0	1	0	(2)
Comprehensive income attributable to Crown Holdings	$ 220	$ 143	$ 687	$ 310