Comprehensive Income and Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Components of Other Comprehensive Income (Loss), Net of Tax

The accumulated balances related to each component of other comprehensive income (loss), net of tax, are as follows:

	Foreign Currency Translation Component			Pension and Other Postretirement Benefit Plans			Accumulated Other  Comprehensive Income (Loss)
				(In thousands)
Balance at December 31, 2016	$	(4,661	)	$	(34,406	)	$	(39,067	)
Other comprehensive gain (loss) loss attributable to Belden before reclassifications	(65,030		)	4,504			(60,526		)
Amounts reclassified from accumulated other comprehensive loss	—			1,567			1,567
Net current period other comprehensive gain (loss) attributable to Belden	(65,030		)	6,071			(58,959		)
Balance at December 31, 2017	(69,691		)	(28,335		)	(98,026		)
Other comprehensive gain (loss) attributable to Belden before reclassifications	27,809			(7,813		)	19,996
Amounts reclassified from accumulated other comprehensive income	—			3,123			3,123
Net current period other comprehensive gain (loss) attributable to Belden	27,809			(4,690		)	23,119
Balance at December 31, 2018	$	(41,882	)	$	(33,025	)	$	(74,907	)

Summary of Effects of Reclassifications from Accumulated Other Comprehensive Income (Loss)

The following table summarizes the effects of reclassifications from accumulated other comprehensive income (loss):

	Amount Reclassified from Accumulated Other Comprehensive Income			Affected Line Item in the Consolidated Statements of Operations and Comprehensive Income
	(In thousands)
Amortization of pension and other postretirement benefit plan items:
Settlement loss	$	1,342		(1	)
Actuarial losses	2,798			(1	)
Prior service credit	(42		)	(1	)
Total before tax	4,098
Tax benefit	(975		)
Total net of tax	$	3,123

(1) The amortization of these accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit costs (see Note 16).