Document and Entity Information (USD $)	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 27, 2014		Jun. 28, 2014		Mar. 29, 2014		Dec. 31, 2013		Sep. 28, 2013		Jun. 29, 2013		Mar. 30, 2013		Dec. 31, 2014	Feb. 16, 2015
Entity Information [Line Items]
Document Fiscal Year Focus																	2014
Document Fiscal Period Focus																	FY
Document Type																	10-K
Amendment Flag																	false
Document Period End Date	Dec. 31, 2014	[1]	Sep. 27, 2014	[1]	Jun. 28, 2014	[1]	Mar. 29, 2014	[1]	Dec. 31, 2013	[1]	Sep. 28, 2013	[1]	Jun. 29, 2013	[1]	Mar. 30, 2013	[1]	Dec. 31, 2014
Entity Registrant Name																	VISHAY INTERTECHNOLOGY INC
Entity Central Index Key																	0000103730
Current Fiscal Year End Date																	--12-31
Entity Well-known Seasoned Issuer																	Yes
Entity Voluntary Filers																	No
Entity Current Reporting Status																	Yes
Entity Filer Category																	Large Accelerated Filer
Entity Public Float					$ 2,068,000,000
Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding																		135,440,811
Class B Convertible Common Stock [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding																		12,129,227

[1] The Company reports interim financial information for 13-week periods beginning on a Sunday and ending on a Saturday, except for the first fiscal quarter, which always begins on January 1, and the fourth fiscal quarter, which always ends on December 31.