Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 245	$ 204	$ 500	$ 509
Other comprehensive income / (loss), net of tax:
Foreign currency translation adjustments	4	(12)	(293)	38
Pension and other postretirement benefits	(156)	148	81	195
Derivatives qualifying as hedges	27	(4)	15	(1)
Total other comprehensive (loss) / income	(125)	132	(197)	232
Total comprehensive income	120	336	303	741
Net income attributable to noncontrolling interests	(31)	(21)	(72)	(86)
Translation adjustments attributable to noncontrolling interests	(1)	2	0	2
Derivatives qualifying as hedges attributable to noncontrolling interests	(2)	0	(1)	0
Comprehensive income attributable to Crown Holdings	$ 86	$ 317	$ 230	$ 657