CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales	$ 1,661,865	$ 1,247,331	$ 1,314,578
Cost of sales	1,085,776	814,192	886,475
Gross profit	576,089	433,139	428,103
Selling, general, and administrative expenses	386,275	300,122	298,451
Restructuring expense	621	2,506	2,519
Operating income	189,193	130,511	127,133
Interest expense	(5,196)	(4,627)	(8,245)
Other income/(expense), net	7,978	(795)	(412)
Foreign exchange income/(expense)	(2,269)	(1,392)	(1,641)
Income before income taxes	189,706	123,697	116,835
Income tax expense	34,731	22,540	20,836
Net income	154,975	101,157	95,999
Less: Net loss/(income) attributable to noncontrolling interests	(1,115)	(697)	(516)
Net income attributable to Franklin Electric Co., Inc.	$ 153,860	$ 100,460	$ 95,483
Income per share:
Basic	$ 3.29	$ 2.16	$ 2.04
Diluted	$ 3.25	$ 2.14	$ 2.03