Document and Entity Information (USD $)	12 Months Ended
	Dec. 27, 2014	Feb. 09, 2015	Jun. 27, 2014
Document Document And Entity Information [Abstract]
Entity Registrant Name	INFINERA CORP
Entity Central Index Key	0001138639
Current Fiscal Year End Date	--12-27
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 27, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	false
Trading Symbol	INFN
Entity Common Stock, Shares Outstanding		128,004,196
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 845,017,931