Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 2,197	$ 1,901
Cost of products sold, excluding depreciation and amortization	1,808	1,531
Depreciation and amortization	65	59
Selling and administrative expense	90	90
Restructuring and other	13	(4)
Income from operations	221	225
Other pension and postretirement	(17)	(12)
Interest expense	74	62
Interest income	(6)	(3)
Foreign exchange	18	(1)
Income before income taxes	152	179
Provision for income taxes	39	46
Net income	113	133
Net income attributable to noncontrolling interests	(23)	(26)
Net income attributable to Crown Holdings	$ 90	$ 107
Earnings per common share attributable to Crown Holdings:
Basic (in usd per share)	$ 0.67	$ 0.77
Diluted (in usd per share)	$ 0.67	$ 0.77