Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 198,414	$ 242,556	$ 254,822
Foreign currency translation, net of tax	29,642	(24,566)	39,509
Adjustments to pension and postretirement liability, net of tax	8,104	(10,838)	25,171
Other comprehensive income (loss), net of tax	37,746	(35,404)	64,680
Comprehensive income	236,160	207,152	319,502
Less: Comprehensive income (loss) attributable to noncontrolling interest	(20)	(199)	144
Comprehensive income attributable to Belden	$ 236,180	$ 207,351	$ 319,358