EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net income attributable to Franklin Electric Co., Inc.	$ 59,364	$ 39,141	$ 89,129	$ 67,021
Less: Earnings allocated to participating securities	200	200	400	400
Net income available to common shareholders	$ 59,200	$ 38,900	$ 88,700	$ 66,600
Basic
Basic weighted average common shares outstanding	46.3	46.5	46.4	46.4
Effect of dilutive securities:
Non-participating employee stock options, performance awards, and deferred shares to non-employee directors	0.6	0.6	0.7	0.6
Diluted weighted average common shares outstanding	46.9	47.1	47.1	47.0
Basic	$ 1.27	$ 0.84	$ 1.91	$ 1.44
Diluted	$ 1.26	$ 0.83	$ 1.89	$ 1.42
Anti-dilutive stock options (in shares)	0.1	0.0	0.1	0.1