EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net income attributable to Franklin Electric Co., Inc.	$ 193,272	$ 187,332	$ 153,860
Less: Earnings allocated to participating securities	700	700	900
Net income available to common shareholders	$ 192,600	$ 186,600	$ 153,000
Denominator:
Basic weighted average common shares outstanding (in shares)	46.2	46.3	46.4
Effect of dilutive securities:
Non-participating employee stock options and performance awards (in shares)	0.7	0.7	0.6
Diluted weighted average common shares outstanding (in shares)	46.9	47.0	47.0
Basic	$ 4.17	$ 4.02	$ 3.29
Diluted	$ 4.11	$ 3.97	$ 3.25
Anti-dilutive stock options (in shares)	0.1	0.1	0.1