Pension and Other Postretirement Benefits - Amounts Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Settlement loss	$ 1	$ 0	$ 1	$ 0
Income from continuing operations before taxes and equity in net earnings of affiliates	203	285	912	867
Provision for income taxes	(55)	(74)	(218)	(285)
Net income from continuing operations	158	216	733	592
Net loss from discontinued operations	0	85	0	43
Net income from continuing operations attributable to Crown Holdings	127	187	638	485
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net income from continuing operations attributable to Crown Holdings	7	23	20	53
Reclassification out of Accumulated Other Comprehensive Income | Defined benefit plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Actuarial losses	13	24	40	75
Prior service credit	(5)	(5)	(15)	(18)
Income from continuing operations before taxes and equity in net earnings of affiliates	9	19	26	57
Provision for income taxes	(2)	(5)	(6)	(13)
Net income from continuing operations	7	14	20	44
Net loss from discontinued operations	$ 0	$ 9	$ 0	$ 9