COVER - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 11, 2020	Jun. 30, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	0-362
Entity Registrant Name	FRANKLIN ELECTRIC CO., INC.
Entity Incorporation, State or Country Code	IN
Entity Tax Identification Number	35-0827455
Entity Address, Address Line One	9255 Coverdale Road
Entity Address, City or Town	Fort Wayne,
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	46809
City Area Code	260
Local Phone Number	824-2900
Title of 12(b) Security	Common Stock, $0.10 par value
Trading Symbol	FELE
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 2,175,331,613
Entity Common Stock, Shares Outstanding		46,393,240
Documents Incorporated by Reference	A portion of the Proxy Statement for the Annual Meeting of Shareholders to be held on May 8, 2020 (Part III).
Entity Central Index Key	0000038725
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY