Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Net income attributable to Crown Holdings	$ 169	$ 142	$ 248	$ 186
Weighted average shares outstanding:
Basic (in shares)	138.5	137.9	138.3	137.8
Add: dilutive stock options and restricted stock (in shares)	0.8	1.4	0.9	1.4
Diluted (in shares)	139.3	139.3	139.2	139.2
Basic earnings per share (in usd per share)	$ 1.22	$ 1.03	$ 1.79	$ 1.35
Diluted earnings per share (in usd per share)	$ 1.21	$ 1.02	$ 1.78	$ 1.34
Shares excluded from the computation of diluted earnings per share	0.1		0.4