Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Mar. 21, 2017	Jun. 30, 2016
Document and Entity Information
Entity Registrant Name	CAPSTONE COMPANIES, INC.
Entity Trading Symbol	capc
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Amendment Flag	false
Entity Central Index Key	0000814926
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		48,132,664
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Entity Public Float			$ 0