CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 194,734	$ 188,811	$ 154,975
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	12,026	(11,809)	(27,534)
Employee benefit plan activity:
Net gain/(loss) arising during period	(4,449)	6,660	288
Amortization arising during period	2,148	5,828	4,760
Other comprehensive income/(loss)	9,725	679	(22,486)
Income tax benefit/(expense) related to items of other comprehensive income/(loss)	643	(3,647)	(1,458)
Other comprehensive income/(loss), net of tax	10,368	(2,968)	(23,944)
Comprehensive income	205,102	185,843	131,031
Less: Comprehensive loss/(income) attributable to noncontrolling interests	(1,496)	(1,378)	(981)
Comprehensive income attributable to Franklin Electric Co., Inc.	$ 203,606	$ 184,465	$ 130,050