EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net income attributable to Franklin Electric Co., Inc.	$ 29,765	$ 27,880
Less: Earnings allocated to participating securities	100	200
Net income available to common shareholders	$ 29,700	$ 27,700
Basic
Basic weighted average common shares outstanding	46.4	46.3
Effect of dilutive securities:
Non-participating employee stock options, performance awards, and deferred shares to non-employee directors	0.7	0.6
Diluted weighted average common shares outstanding	47.1	46.9
Basic	$ 0.64	$ 0.60
Diluted	$ 0.63	$ 0.59
Anti-dilutive stock options (in shares)	0.1	0.1