Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 113	$ 133
Other comprehensive income, net of tax:
Foreign currency translation adjustments	82	110
Pension and other postretirement benefits	11	9
Derivatives qualifying as hedges	(32)	21
Total other comprehensive income	61	140
Total comprehensive income	174	273
Net income attributable to noncontrolling interests	(23)	(26)
Translation adjustments attributable to noncontrolling interests	(1)	0
Derivatives qualifying as hedges attributable to noncontrolling interests	0	(1)
Comprehensive income attributable to Crown Holdings	$ 150	$ 246