EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net income attributable to Franklin Electric Co., Inc.	$ 10,643	$ 9,056
Less: Earnings allocated to participating securities	0	100
Net income available to common shareholders	$ 10,600	$ 9,000
Basic
Basic weighted average common shares outstanding	46.4	46.3
Effect of dilutive securities:
Non-participating employee stock options and performance awards	0.4	0.4
Diluted weighted average common shares outstanding	46.8	46.7
Basic earnings per share (in dollars per share)	$ 0.23	$ 0.19
Diluted earnings per share (in dollars per share)	$ 0.23	$ 0.19
Anti-dilutive stock options (in shares)	0.3	0.1