Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Net Sales	$ 2,734	$ 3,174	$ 3,046	$ 2,197	$ 2,168	$ 2,468	$ 2,161	$ 1,901	$ 11,151	$ 8,698	$ 8,284
Cost of products sold, excluding depreciation and amortization									9,028	7,006	6,623
Depreciation and amortization									425	247	247
Selling and administrative expense									558	367	366
Provision for asbestos									0	3	21
Restructuring and other									44	51	30
Income from operations									1,096	1,024	997
Loss from early extinguishments of debt							7		0	7	37
Other pension and postretirement									(25)	(53)	(24)
Interest expense									384	252	243
Interest income									(21)	(15)	(12)
Foreign exchange									18	4	(16)
Income before income taxes									740	829	769
Provision for income taxes									216	401	186
Equity in net earnings of affiliates									4	0	0
Net income									528	428	583
Net income attributable to noncontrolling interests									(89)	(105)	(87)
Net income attributable to Crown Holdings	$ 53	$ 164	$ 132	$ 90	$ (89)	$ 177	$ 128	$ 107	$ 439	$ 323	$ 496
Earnings per common share attributable to Crown Holdings:
Basic (in dollars per share)	$ 0.40	$ 1.23	$ 0.99	$ 0.67	$ (0.67)	$ 1.32	$ 0.95	$ 0.77	$ 3.28	$ 2.39	$ 3.58
Diluted (in dollars per share)	$ 0.40	$ 1.23	$ 0.99	$ 0.67	$ (0.67)	$ 1.32	$ 0.94	$ 0.77	$ 3.28	$ 2.38	$ 3.56