Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 141	$ 174	$ 255	$ 305
Other comprehensive income / (loss), net of tax:
Foreign currency translation adjustments	22	(9)	(297)	50
Pension and other postretirement benefits	(20)	33	237	47
Derivatives qualifying as hedges	22	(9)	(12)	3
Total other comprehensive income / (loss)	24	15	(72)	100
Total comprehensive income	165	189	183	405
Net income attributable to noncontrolling interests	(15)	(37)	(41)	(65)
Translation adjustments attributable to noncontrolling interests	(2)	0	1	0
Derivatives qualifying as hedges attributable to noncontrolling interests	(1)	0	1	0
Comprehensive income attributable to Crown Holdings	$ 147	$ 152	$ 144	$ 340