Document And Entity Information	9 Months Ended
	Dec. 28, 2014	Jan. 31, 2015
Document Information [Abstract]
Entity Registrant Name	INTEGRATED DEVICE TECHNOLOGY INC
Entity Central Index Key	0000703361
Current Fiscal Year End Date	--03-29
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		148,288,258
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 28, 2014