Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net income / (loss) from continuing operations attributable to Crown Holdings	$ 450	$ 727	$ (507)
Net income / (loss) from discontinued operations attributable to Crown Holdings	0	0	(53)
Net income / (loss) attributable to Crown Holdings	$ 450	$ 727	$ (560)
Weighted average shares outstanding:
Basic (in shares)	119,410	120,860	130,380
Add: dilutive restricted stock (in shares)	260	520	0
Diluted (in shares)	119,670	121,380	130,380
Basic earnings / (loss) per common share from continuing operations (in dollars per share)	$ 3.77	$ 6.01	$ (3.89)
Basic earnings / (loss) per common share from discontinued operations (in dollars per share)	0	0	(0.41)
Basic (in dollars per share)	3.77	6.01	(4.30)
Diluted earnings / (loss) per common share from continuing operations (in dollars per share)	3.76	5.99	(3.89)
Diluted earnings / (loss) per common share from discontinued operations (in dollars per share)	0	0	(0.41)
Diluted (in dollars per share)	$ 3.76	$ 5.99	$ (4.30)
Contingently issuable shares excluded from the computation of diluted earnings per share because the effect would have been anti-dilutive (in shares)	200	700	100