Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 26, 2019
Document And Entity Information [Abstract]
Document Type	10-Q/A
Amendment Flag	true
Amendment Description	This Amendment No. 1 on Form 10-Q/A (this “Form 10-Q/A”) amends our Quarterly Report for the period ended March 31, 2019 originally filed with the Securities and Exchange Commission (“SEC”) on April 29, 2019 (the “Form 10-Q”). When filed, Exhibit 32 to our Quarterly Report on Form 10-Q reflected a clerical error identifying an incorrect periodic report. We are filing this Form 10-Q/A to re-file Exhibit 32 to reference the proper periodic report. Exhibit 32, “Certification Pursuant to 18 U.S.C Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002," is being filed with this Amendment No.1. No other information contained in the original filing is amended by this Form 10-Q/A.
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Registrant Name	CROWN HOLDINGS INC
Entity Central Index Key	0001219601
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		135,338,696