Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Jul. 02, 2016	Aug. 26, 2016	Dec. 26, 2015
Document and Entity Information
Entity Registrant Name	Lumentum Holdings Inc.
Entity Central Index Key	0001633978
Document Type	10-K
Document Period End Date	Jul. 02, 2016
Amendment Flag	false
Current Fiscal Year End Date	--07-02
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Public Float			$ 538
Entity Common Stock, Shares Outstanding		60,082,117
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY