EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net income attributable to Franklin Electric Co., Inc.	$ 57,798	$ 58,624	$ 154,723	$ 147,753
Less: Earnings allocated to participating securities	200	200	500	600
Net income available to common shareholders	$ 57,600	$ 58,400	$ 154,200	$ 147,200
Basic
Basic weighted average common shares outstanding	46.2	46.3	46.2	46.4
Effect of dilutive securities:
Non-participating employee stock options, performance awards, and deferred shares to non-employee directors	0.7	0.7	0.7	0.7
Diluted weighted average common shares outstanding	46.9	47.0	46.9	47.1
Basic	$ 1.25	$ 1.26	$ 3.34	$ 3.17
Diluted	$ 1.23	$ 1.24	$ 3.29	$ 3.13
Anti-dilutive stock options (in shares)	0.1	0.0	0.1	0.1