EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Numerator:
Net income attributable to Franklin Electric Co., Inc.	$ 16,738	$ 54,596	$ 107,840	$ 146,654
Less: Earnings allocated to participating securities	100	200	300	500
Net income available to common shareholders	$ 16,600	$ 54,400	$ 107,500	$ 146,200
Basic
Basic weighted average common shares outstanding	44.5	45.7	45.2	45.9
Effect of dilutive securities:
Non-participating employee stock options, performance awards, and deferred shares to non-employee directors	0.5	0.6	0.5	0.6
Diluted weighted average common shares outstanding	45.0	46.3	45.7	46.5
Basic	$ 0.37	$ 1.19	$ 2.38	$ 3.18
Diluted	$ 0.37	$ 1.17	$ 2.35	$ 3.14
Anti-dilutive stock options (in shares)	0.2	0.2	0.1	0.1