Divestitures (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of discontinued businesses			$ 0	$ 70
Net income / (loss) from discontinued operations	$ 0	$ (3)	0	42
Net income from discontinued operations attributable to noncontrolling interests	0	0	0	1
Net income / (loss) from discontinued operations attributable to Crown Holdings	$ 0	(3)	$ 0	41
European Tinplate | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales		605		1,119
Cost of products sold, excluding depreciation and amortization		490		908
Depreciation and amortization		0		16
Selling and administrative expense		22		43
Other pension and postretirement		1		1
Interest expense		2		4
Foreign exchange		(1)		(1)
Loss on sale of discontinued businesses		70		70
Transaction costs		6		8
Income from discontinued operations before tax		15		70
Provision for income taxes		18		28
Net income / (loss) from discontinued operations		(3)		42
Net income from discontinued operations attributable to noncontrolling interests		0		1
Net income / (loss) from discontinued operations attributable to Crown Holdings		$ (3)		$ 41