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Document and Entity Information
May 10, 2021
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0000763744
Document Type 8-K
Document Period End Date May 10, 2021
Entity Registrant Name LCI INDUSTRIES
Entity Incorporation State Country Code DE
Entity File Number 001-13646
Entity Tax Identification Number 13-3250533
Entity Address, Address Line One 3501 County Road 6 East
Entity Address, City or Town Elkhart
Entity Address, State or Province IN
Entity Address, Postal Zip Code 46514
City Area Code (574)
Local Phone Number 535-1125
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, $.01 par value
Trading Symbol LCII
Security Exchange Name NYSE
Entity Emerging Growth Company false