Belden (BDC) 10-K13 Feb 252024 FY Annual reportFinancial data

Company Profile

Cover

Cover - USD ($)	12 Months Ended
Cover - USD ($)	Dec. 31, 2024	Feb. 05, 2025	Jun. 30, 2024
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-12561
Entity Registrant Name	BELDEN INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-3601505
Entity Address, Address Line One	1 North Brentwood Boulevard
Entity Address, Address Line Two	15th Floor
Entity Address, City or Town	St. Louis
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	63105
City Area Code	314
Local Phone Number	854-8000
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	BDC
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity File Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging growth company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 2,940,349,913
Entity Common Stock, Shares Outstanding		40,269,390
Documents Incorporated by Reference	The registrant intends to file a definitive proxy statement for its annual meeting of stockholders within 120 days of the end of the fiscal year ended December 31, 2024 (the “Proxy Statement”). Portions of such proxy statement are incorporated by reference into Part III.
Amendment flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Entity central index key	0000913142

Audit Information

Audit Information	12 Months Ended
Audit Information	Dec. 31, 2024
Auditor Information [Abstract]
Auditor Name	Ernst & Young LLP
Auditor Location	St. Louis, MO
Auditor Firm ID	42

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 370,302	$ 597,044
Receivables, net	409,711	413,806
Inventories, net	343,099	366,987
Other current assets	73,117	79,142
Total current assets	1,196,229	1,456,979
Property, plant and equipment, less accumulated depreciation	495,625	451,069
Operating lease right-of-use assets	118,551	89,686
Goodwill	1,018,677	907,331
Intangible assets, less accumulated amortization	419,074	269,144
Deferred income taxes	16,353	15,739
Other long-lived assets	63,429	50,243
Segment assets	3,327,938	3,240,191
Current liabilities:
Accounts payable	315,724	343,215
Accrued liabilities	306,980	290,289
Total current liabilities	622,704	633,504
Long-term debt	1,130,101	1,204,211
Postretirement benefits	63,260	74,573
Deferred income taxes	77,333	49,472
Long-term operating lease liabilities	100,049	74,941
Other long-term liabilities	39,755	37,188
Stockholders’ equity:
Common stock, par value $0.01 per share— 200,000 shares authorized; 50,335 shares issued; 40,211 and 41,127 shares outstanding at 2024 and 2023, respectively	503	503
Additional paid-in capital	839,755	818,663
Retained earnings	1,176,036	985,807
Accumulated other comprehensive loss	(3,532)	(41,279)
Treasury stock, at cost— 10,124 and 9,208 shares at 2024 and 2023, respectively	(718,026)	(597,437)
Total Belden stockholders’ equity	1,294,736	1,166,257
Noncontrolling interest	0	45
Total stockholders’ equity	1,294,736	1,166,302
Total liabilities and stockholders' equity	$ 3,327,938	$ 3,240,191

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Thousands	Dec. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000	200,000
Common stock, shares issued (in shares)	50,335	50,335
Common stock, shares outstanding (in shares)	40,211	41,127
Treasury stock, shares (in shares)	10,124	9,208

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenues	$ 2,460,979	$ 2,512,084	$ 2,606,485
Cost of sales	(1,538,757)	(1,557,118)	(1,690,196)
Gross profit	922,222	954,966	916,289
Selling, general and administrative expenses	(494,603)	(492,702)	(448,636)
Research and development expenses	(112,365)	(116,427)	(104,350)
Amortization of intangibles	(48,794)	(40,375)	(37,860)
Gain on sale of assets	0	12,056	37,891
Operating income	266,460	317,518	363,334
Interest expense, net	(38,303)	(33,625)	(43,554)
Loss on debt extinguishment	0	0	(6,392)
Non-operating pension benefit (cost)	(215)	1,863	4,005
Income from continuing operations before taxes	227,942	285,756	317,393
Income tax expense	(29,528)	(43,200)	(49,645)
Income from continuing operations	198,414	242,556	267,748
Loss from discontinued operations, net of tax	0	0	(3,685)
Loss from disposal of discontinued operations, net of tax	0	0	(9,241)
Net income	198,414	242,556	254,822
Less: Net income (loss) attributable to noncontrolling interest	(19)	(203)	159
Net income attributable to Belden common stockholders	$ 198,433	$ 242,759	$ 254,663
Weighted average number of common shares and equivalents:
Basic (in shares)	40,694	42,237	43,845
Diluted (in shares)	41,299	42,859	44,537
Basic income (loss) per share attributable to Belden common stockholders:
Continuing operations (in dollars per share)	$ 4.88	$ 5.75	$ 6.10
Discontinued operations (in dollars per share)	0	0	(0.08)
Disposal of discontinued operations (in dollars per share)	0	0	(0.21)
Net income (in dollars per share)	4.88	5.75	5.81
Diluted income (loss) per share attributable to Belden common stockholders:
Continuing operation (in dollars per share)	4.80	5.66	6.01
Discontinued operations (in dollars per share)	0	0	(0.08)
Disposal of discontinued operations (in dollars per share)	0	0	(0.21)
Net income (in dollars per share)	$ 4.80	$ 5.66	$ 5.72

Consolidated Statements of Comp

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

Consolidated Cash Flow Statemen

Consolidated Cash Flow Statements - USD ($) $ in Thousands	12 Months Ended
Consolidated Cash Flow Statements - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net income	$ 198,414	$ 242,556	$ 254,822
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	115,741	99,446	88,738
Share-based compensation	27,532	21,024	23,676
Loss on debt extinguishment	0	0	6,392
Deferred income tax benefit	(15,954)	(12,957)	(627)
Gain on sale of assets	0	(12,056)	(37,891)
Changes in operating assets and liabilities, net of the effects of exchange rate changes, acquired businesses, and disposals:
Receivables	18,861	24,527	(33,605)
Inventories	24,318	(15,331)	5,558
Accounts payable	(21,724)	(8,175)	(20,595)
Accrued liabilities	11,354	(16,292)	(5,416)
Income taxes	6,639	(3,668)	2,335
Other assets	(6,689)	(9,314)	2,881
Other liabilities	(6,416)	9,878	(4,972)
Net cash provided by operating activities	352,076	319,638	281,296
Cash flows from investing activities:
Cash used for business acquisitions, net of cash acquired	(296,452)	(106,712)	(104,603)
Capital expenditures	(129,100)	(116,731)	(105,094)
Disposal of businesses, net of cash	(1,316)	9,300	334,574
Proceeds from disposal of tangible assets	113	13,785	43,534
Net cash provided by (used for) investing activities	(426,755)	(200,358)	168,411
Cash flows from financing activities:
Payments under share repurchase program, including excise tax	(134,308)	(192,135)	(150,000)
Withholding tax payments for share-based payment awards	(9,659)	(17,444)	(7,186)
Cash dividends paid	(8,195)	(8,498)	(8,949)
Payments under financing lease obligations	(1,134)	(423)	(157)
Payments to noncontrolling interest holders	(67)	0	0
Payments under borrowing arrangements	0	0	(230,639)
Proceeds from issuance of common stock	8,917	6,568	3,717
Other	728	0	0
Net cash used for financing activities	(143,718)	(211,932)	(393,214)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(8,345)	2,020	(12,574)
Increase (decrease) in cash and cash equivalents	(226,742)	(90,632)	43,919
Cash and cash equivalents, beginning of year	597,044	687,676	643,757
Cash and cash equivalents, end of year	$ 370,302	$ 597,044	$ 687,676

Consolidated Stockholders' Equi

Consolidated Stockholders' Equity Statements - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interest
Beginning balance (in shares) at Dec. 31, 2021		50,335
Beginning balance at Dec. 31, 2021	$ 956,082	$ 503	$ 833,627	$ 505,717	$ (313,994)	$ (70,566)	$ 795
Beginning balance (in shares) at Dec. 31, 2021					(5,360)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	254,822			254,663			159
Other comprehensive income (loss), net of tax	64,680					64,695	(15)
Common stock issuance	3,717		(2,775)		$ 6,492
Common stock issuance (in shares)					82
Retirement Savings Plan stock contributions	7,017		(1,551)		$ 8,568
Retirement Savings Plan stock contributions (in shares)					116
Exercise of stock options, net of tax withholding forfeitures	(1,606)		(4,875)		$ 3,269
Exercise of stock options, net of tax withholding forfeitures (in shares)					40
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	$ (5,580)		(22,433)		$ 16,853
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)					208
Share repurchase program and including excise tax (in shares)	(2,600)				(2,588)
Share repurchase program and including excise tax	$ (150,000)				$ (150,000)
Share-based compensation	23,676		23,676
Common stock dividends	(8,858)			(8,858)
Ending balance (in shares) at Dec. 31, 2022		50,335
Ending balance at Dec. 31, 2022	$ 1,143,950	$ 503	825,669	751,522	$ (428,812)	(5,871)	939
Ending balance (in shares) at Dec. 31, 2022					(7,502)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock dividends declared per share (usd per share)	$ 0.20
Net income (loss)	$ 242,556			242,759			(203)
Other comprehensive income (loss), net of tax	(35,404)					(35,408)	4
Sale and deconsolidation of Hite JV	(695)						(695)
Common stock issuance	6,568		28		$ 6,540
Common stock issuance (in shares)					116
Retirement Savings Plan stock contributions	7,798		2,347		$ 5,451
Retirement Savings Plan stock contributions (in shares)					94
Exercise of stock options, net of tax withholding forfeitures	(4,885)		(7,928)		$ 3,043
Exercise of stock options, net of tax withholding forfeitures (in shares)					82
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	$ (12,558)		(22,477)		$ 9,919
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)					255
Share repurchase program and including excise tax (in shares)	(2,300)				(2,253)
Share repurchase program and including excise tax	$ (193,578)				$ (193,578)
Share-based compensation	21,024		21,024
Common stock dividends	$ (8,474)			(8,474)
Ending balance (in shares) at Dec. 31, 2023	41,127	50,335
Ending balance at Dec. 31, 2023	$ 1,166,302	$ 503	818,663	985,807	$ (597,437)	(41,279)	45
Ending balance (in shares) at Dec. 31, 2023	(9,208)				(9,208)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock dividends declared per share (usd per share)	$ 0.20
Net income (loss)	$ 198,414			198,433			(19)
Other comprehensive income (loss), net of tax	37,746					37,747	(1)
Acquisition of noncontrolling interests	(67)		(42)				(25)
Acquisition of noncontrolling interest	67		42				25
Common stock issuance	8,917		3,091		$ 5,826
Common stock issuance (in shares)					135
Retirement Savings Plan stock contributions	7,586		4,326		$ 3,260
Retirement Savings Plan stock contributions (in shares)					80
Exercise of stock options, net of tax withholding forfeitures	(1,982)		(1,986)		$ 4
Exercise of stock options, net of tax withholding forfeitures (in shares)					36
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	$ (7,677)		(11,829)		$ 4,152
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)					160
Share repurchase program and including excise tax (in shares)	(1,300)				(1,327)
Share repurchase program and including excise tax	$ (133,831)				$ (133,831)
Share-based compensation	27,532		27,532
Common stock dividends	$ (8,204)			(8,204)
Ending balance (in shares) at Dec. 31, 2024	40,211	50,335
Ending balance at Dec. 31, 2024	$ 1,294,736	$ 503	$ 839,755	$ 1,176,036	$ (718,026)	$ (3,532)	$ 0
Ending balance (in shares) at Dec. 31, 2024	(10,124)				(10,124)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock dividends declared per share (usd per share)	$ 0.20

Consolidated Stockholders' Eq_2

Consolidated Stockholders' Equity Statements (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Stockholders' Equity [Abstract]
Common stock dividends declared per share (usd per share)	$ 0.20	$ 0.20	$ 0.20

Basis of Presentation

Basis of Presentation	12 Months Ended
Basis of Presentation	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation Business Description Belden Inc. (the Company, us, we, or our) is a leading global supplier of complete connection solutions built around two global businesses - Smart Infrastructure Solutions and Automation Solutions . We sell our products to distributors, end-users, installers, and directly to OEMs. We have manufacturing and other operating facilities in the U.S., Canada, China, India, Mexico, Tunisia, and various countries in Europe. Consolida tion The accompanying Consolidated Financial Statements include Belden Inc. and all of its subsidiaries. We eliminate all significant affiliate accounts and transactions in consolidation. Foreign Currency For international operations with functional currencies other than the United States (U.S.) dollar, we translate assets and liabilities at current exchange rates; we translate income and expenses using average exchange rates. We report the resulting translation adjustments, as well as gains and losses from certain affiliate transactions, in accumulated other comprehensive income (loss), a separate component of stockholders’ equity. We include exchange gains and losses on transactions in operating income. We determine the functional currency of our foreign subsidiaries based upon the currency of the primary economic environment in which each subsidiary operates. Typically, that is determined by the currency in which the subsidiary primarily generates and expends cash. We have concluded that the local currency is the functional currency for all of our material subsidiaries. Reporting Periods Our fiscal year and fiscal fourth quarter both end on December 31. Our fiscal first quarter ends on the Sunday falling closest to 91 days after December 31. Our fiscal second and third quarters each have 91 days. Use of Estimates in the Preparation of the Financial Statements The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, and operating results and the disclosure of contingencies. Actual results could differ from those estimates. We make significant estimates with respect to revenue related to variable consideration, the collectability and valuation of receivables, the valuation of inventory, the realization of deferred tax assets, the valuation of goodwill and indefinite-lived intangible assets, the valuation of contingent liabilities, the calculation of share-based compensation, the calculation of pension and other postretirement benefits expense, and the valuation of acquired businesses.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Fair Value Measurement Accounting guidance for fair value measurements specifies a hierarchy of valuation techniques based upon whether the inputs to those valuation techniques reflect assumptions other market participants would use based upon market data obtained from independent sources or reflect our own assumptions of market participant valuation. The hierarchy is broken down into three levels based on the reliability of the inputs as follows: • Level 1 – Quoted prices in active markets that are unadjusted and accessible at the measurement date for identical, unrestricted assets or liabilities; • Level 2 – Quoted prices for identical assets and liabilities in markets that are not active, quoted prices for similar assets and liabilities in active markets, or financial instruments for which significant inputs are observable, either directly or indirectly; and • Level 3 – Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable. During 2024, 2023, and 2022 we utilized Level 1 inputs to determine the fair value of cash equivalents and Level 2 and Level 3 inputs to determine the fair value of net assets acquired in business combinations (see Note 4) and for impairment testing (see Note 13). We did not have any transfers between Level 1 and Level 2 fair value measurements during 2024. Cash and Cash Equivalents We classify cash on hand and deposits in banks, including commercial paper, money market accounts, and other investments with an original maturity of three months or less, that we hold from time to time, as cash and cash equivalents. We periodically have cash equivalents consisting of short-term money market funds and other investments. As of December 31, 2024 and 2023, we did not have any such cash equivalents on hand. The primary objective of our investment activities is to preserve our capital for the purpose of funding operations. We do not enter into investments for trading or speculative purposes. Accounts Receivable and Revenue Reserves We classify amounts owed to us and due within twelve months, arising from the sale of goods or services and from other business activities, as current receivables. We classify receivables due after twelve months as other long-lived assets. At the time of sale, we establish an estimated reserve for trade, promotion, and other special price reductions such as contract pricing, discounts to meet competitor pricing, and on-time payment discounts. We also adjust receivable balances for, among other things, correction of billing errors, incorrect shipments, and settlement of customer disputes. Customers are allowed to return inventory if and when certain conditions regarding the physical state of the inventory and our approval of the return are met. Certain distribution customers are allowed to return inventory at original cost, in an amount not to exceed three percent of the prior year’s purchases, in exchange for an order of equal or greater value. Until we can process these reductions, corrections, and returns (together, the Changes) through individual customer records, we estimate the amount of outstanding Changes and recognize them by reducing revenues. We base these estimates on historical and anticipated sales demand, trends in product pricing, and historical and anticipated Changes patterns. We make revisions to these estimates in the period in which the facts that give rise to ea ch revision become known. Future market conditions might require us to take actions to further reduce prices and increase customer return authorizations. Unprocessed Changes recognized against our gross accounts receivable, such as price reductions, at December 31, 2024 and 2023 totaled $29.1 million and $26.0 million, respectively. Unprocessed Changes recognized as accrued liabilities, such as product returns, at December 31, 2024 and 2023 totaled $16.0 million and $15.6 million, respectively. We are exposed to credit losses primarily through sales of products and services. Our expected loss allowance methodology for accounts receivable is developed using historical collection experience, current and future economic and market conditions and a review of the current status of customers' trade accounts receivables. Due to the short-term nature of such receivables, the estimate of amount of accounts receivable that may not be collected is based on aging of the accounts receivable balances and the financial condition of customers. Additionally, specific allowance amounts are established to record the appropriate provision for customers that have a higher probability of default. Our monitoring activities include timely account reconciliation, dispute resolution, payment confirmation, consideration of customers' financial condition and macroeconomic conditions. Balances are written off when determined to be uncollectible. As of December 31, 2024 and 2023, the allowance for doubtful accounts totaled $25.3 million and $23.1 million, respectively. We also recognized bad debt expense, net of recoveries, in selling, general and administrative expenses of $2.4 million, $15.6 million, and $6.5 million in 2024, 2023, and 2022, respectively. Inventories and Related Reserves Inventories are stated at the lower of cost or net realizable value. We determine the cost of all raw materials, work-in-process, and finished goods inventories by the first in, first out method. Cost components of inventories include direct labor, applicable production overhead, and amounts paid to suppliers of materials and products as well as freight costs and, when applicable, duty costs to import the materials and products. We evaluate the realizability of our inventory on a product-by-product basis in light of historical and anticipated sales demand, technological changes, product life cycle, component cost trends, product pricing, and inventory condition. In circumstances where inventory levels are in excess of anticipated market demand, where inventory is deemed technologically obsolete or not saleable due to condition, or where inventory cost exceeds net realizable value, we record a charge to cost of sales and reduce the inventory to its net realizable value. The allowances for excess and obsolete inventories at December 31, 2024 and 2023 totaled $71.1 million and $67.9 million, respectively. Property, Plant and Equipment We record property, plant and equipment at cost. We calculate depreciation on a straight-line basis over the estimated useful lives of the related assets ranging from 10 to 40 years for buildings, 5 to 12 years for machinery and equipment, and 5 to 10 years for computer equipment and software. Construction in process reflects amounts incurred for property, plant and equipment not yet placed into service. We charge maintenance and repairs—both planned major activities and less-costly, ongoing activities—to expense as incurred. We capitalize interest costs associated with the construction of capital assets and amortize the costs over the assets’ useful lives. Depreciation expense is included in costs of sales; selling, general and administrative expenses; and research and development expenses in the Consolidated Statements of Operations based on the specific categorization and use of the underlying assets being depreciated. We review property, plant and equipment to determine whether an event or change in circumstances indicates the carrying values of the assets may not be recoverable. We base our evaluation on the nature of the assets, the future economic benefit of the assets, and any historical or future profitability measurements, as well as other external market conditions or factors that may be present. If such impairment indicators are present or other factors exist that indicate that the carrying amount of an asset may not be recoverable, we determine whether impairment has occurred through the use of an undiscounted cash flow analysis. If impairment has occurred, we recognize a loss for the difference between the carrying amount and the fair value of the asset. For purposes of impairment testing of long-lived assets, we have identified asset groups at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. Generally, our asset groups are based on an individual plant or operating facility level. In some circumstances, however, a combination of plants or operating facilities may be considered the asset group due to interdependence of operational activities and cash flows. Goodwill and Intangible Assets Our intangible assets consist of (a) definite-lived assets subject to amortization such as developed technology, customer relationships, in-service research and development, trademarks, backlog, and capitalized software development intangible assets, and (b) indefinite-lived assets not subject to amortization such as goodwill. We record amortization of the definite-lived intangible assets over the estimated useful lives of the related assets, which generally range from one year or less for trademarks to more than 20 years for certain of our customer relationships. We determine the amortization method for our definite-lived intangible assets based on the pattern in which the economic benefits of the intangible asset are consumed. In the event we cannot reliably determine that pattern, we utilize a straight-line amortization method. We test our goodwill for impairment on an annual basis as of our fiscal November month-end or when indicators of impairment exist. We base our estimates on assumptions we believe to be reasonable, but which are not predictable with precision and therefore are inherently uncertain. Actual future results could differ from these estimates. The accounting guidance related to goodwill impairment testing allows for the performance of an optional qualitative assessment of whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. Such an evaluation is made based on the weight of all available evidence and the significance of all identified events and circumstances that may influence the fair value of a rep orting unit. If it is more likely than not that the fair value is less than the carrying value, then a quantitative assessment is required for the reporting unit, as described in the paragraph below. In 2024, we performed a qualitative assessment over all six of our reporting units. During 2024, 2023 and 2022, we did not recognize any goodwill impairment. We review intangible assets subject to amortization whenever an event or change in circumstances indicates the carrying values of the assets may not be recoverable. We test intangible assets subject to amortization for impairment and estimate their fair values using the same assumptions and techniques we employ on property, plant and equipment. We did not recognize any impairment charges for amortizable intangible assets in 2024, 2023, or 2022. Pension and Other Postretirement Benefits Our pension and other postretirement benefit costs and obligations are dependent on the various actuarial assumptions used in calculating such amounts. These assumptions relate to discount rates, salary growth, long-term return on plan assets, health care cost trend rates, mortality tables, and other factors. We base the discount rate assumptions on current investment yields on high-quality corporate long-term bonds. The salary growth assumptions reflect our long-term actual experience and future or near-term outlook. We determine the long-term return on plan assets based on historical portfolio results and management’s expectation of the future economic environment. Our health care cost trend assumptions are developed based on historical cost data, the near-term outlook, and an assessment of likely long-term trends. Actual results that differ from our assumptions are accumulated and, if in excess of the lesser of 10% of the projected benefit obligation or the fair market value of plan assets, are amortized over the estimated future working life of the plan participants. Accrued Sales Rebates We grant incentive rebates to participating customers as part of our sales programs. The rebates are determined based on certain targeted sales volumes. Rebates are paid quarterly or annually in either cash or receivables credits. Until we can process these rebates through individual customer records, we estimate the amount of outstanding rebates and recognize them as accrued liabilities and reductions in our gross revenues. We base our estimates on both historical and anticipated sales demand and rebate program participation. We charge revisions to these estimates back to accrued liabilities and revenues in the period in which the facts that give rise to each revision become known. Future market conditions and product transitions might require us to take actions to increase sales rebates offered, possibly resulting in an incremental increase in accrued liabilities and an i ncremental reduction in revenues at the time the rebate is offered. Accrued sales rebates at December 31, 2024 and 2023 tot aled $51.1 million and $49.3 million, respectively. Contingent Liabilities We have established liabilities for environmental and legal contingencies that are probable of occurrence and reasonably estimable, the amounts of which are currently not material. A significant amount of judgment and use of estimates is required to quantify our ultimate exposure in these matters. We review the valuation of these liabilities on a quarterly basis, and we adjust the balances to account for changes in circumstances for ongoing and emerging issues. We accrue environmental remediation costs based on estimates of known environmental remediation exposures developed in consultation with our environmental consultants and legal counsel, the amounts of which are not currently material. We expense environmental compliance costs, which include maintenance and operating costs with respect to ongoing monitoring programs, as incurred. We evaluate the range of potential costs to remediate environmental sites. The ultimate cost of site clean-up is difficult to predict given the uncertainties of our involvement in certain sites, uncertainties regarding the extent of the required clean-up, the availability of alternative clean-up methods, variations in the interpretation of applicable laws and regulations, the possibility of insurance recoveries with respect to certain sites, and other factors. We are, from time to time, subject to routine litigation incidental to our business. These lawsuits primarily involve claims for damages arising out of the use of our products, allegations of patent or trademark infringement, and litigation and administrative proceedings involving employment matters and commercial disputes. Assessments regarding the ultimate cost of lawsuits require judgments concerning matters such as the anticipated outcome of negotiations, the number and cost of pending and future claims, and the impact of evidentiary requirements. Based on facts currently available, we believe the disposition of the claims that are pending or asserted will not have a materially adverse effect on our financial position, results of operations or cash flow. Acquisition Accounting We allocate the consideration of an acquired business to its identifiable assets and liabilities based on estimated fair values. The excess of the consideration over the amount allocated to the assets and liabilities, if any, is recorded to goodwill. We use all available information to estimate fair values. We typically engage third party valuation specialists to assist in the fair value determination of inventories, tangible long-lived assets, and intangible assets other than goodwill. The carrying values of acquired receivables and accounts payable have historically approximated their fair values as of the acquisition date. As necessary, we may engage third party specialists to assist in the estimation of fair value for certain liabilities, such as postretirement benefit liabilities. We adjust the preliminary acquisition accounting, as necessary, typically up to one year after the acquisition closing date as we obtain more information regarding asset valuations and liabilities assumed. Revenue Recognition We recognize revenue consistent with the principles as outlined in the following five step model: (1) identify the contract with the customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) each performance obligation is satisfied. See Note 3. Cost of Sales Cost of sales includes our total cost of inventory sold during the period, including material, labor, production overhead costs, variable manufacturing costs, and fixed manufacturing costs. Production overhead costs include operating supplies, applicable utility expenses, maintenance costs, and scrap. Variable manufacturing costs include inbound, interplant, and outbound freight, inventory shrinkage, and charges for excess and obsolete inventory. Fixed manufacturing costs include the costs associated with our purchasing, receiving, inspection, warehousing, distribution centers, production and inventory control, and manufacturing management. Cost of sales also includes the costs to provide maintenance and support and other professional services. Shipping and Handling Costs We recognize fees earned on the shipment of product to customers as revenues and recognize costs incurred on the shipment of product to customers as a cost of sales. Selling, General and Administrative Expenses Selling, general and administrative expenses include expenses not directly related to the production of inventory. They include all expenses related to selling and marketing our products, as well as the salary and benefit costs of associates performing the selling and marketing functions. Selling, general and administrative expenses also include salary and benefit costs, purchased services, and other costs related to our executive and administrative functions. Research and Development Costs Research and development costs are expensed as incurred. Advertising Costs Advertising costs are expensed as incurred. Advertising costs were $14.0 million, $18.8 million, and $13.7 million for 2024, 2023, and 2022, respectively. Share-Based Compensation We compensate certain employees and non-employee directors with various forms of share-based payment awards and recognize compensation costs for these awards based on their fair values. We estimate the fair values of certain awards, primarily stock appreciation rights (SARs), on the grant date using the Black-Scholes-Merton option-pricing formula, which incorporates certain assumptions regarding the expected term of an award and expected stock price volatility. We develop the expected term assumption based on the vesting period and contractual term of an award, our historical exercise and cancellation experience, our stock price history, plan provisions that require exercise or cancellation of awards after employees terminate, and the extent to which currently available information indicates that the future is reasonably expected to differ from past experience. We develop the expected volatility assumption based on historical price data for our common stock. We estimate the fair value of certain restricted stock units with service vesting conditions and performance vesting conditions based on the grant date stock price. We estimate the fair value of certain restricted stock units with market conditions using a Monte Carlo simulation valuation model with the assistance of a third party valuation firm. After calculating the aggregate fair value of an award, we use an estimated forfeiture rate to discount the amount of share-based compensation cost expected to be recognized in our operating results over the service period of the award. We develop the forfeiture assumption based on our historical pre-vesting cancellation experience. Income Taxes Income taxes are provided based on earnings reported for financial statement purposes. The provision for income taxes differs from the amounts currently payable to taxing authorities due to the temporary or permanent timing differences with respect to the recognition of revenues, expenses, and tax attributes for income tax purposes compared to financial statement purposes. Income taxes are provided as if operations in all countries, including the U.S., were stand-alone businesses filing separate tax returns. Deferred income taxes are recognized by applying enacted statutory tax rates applicable to future years to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases as well as net operating loss and tax credit carryforwards. Deferred tax assets generally represent future tax benefits to be received when these carryforwards can be applied against future taxable income or when expenses previously reported in our Consolidated Financial Statements become deductible for income tax purposes. A deferred tax asset valuation allowance is required when some portion or all of the deferred tax assets is not more likely than not to be realized. At December 31, 2024, the valuation allowance of $108.1 million was primarily related to net operating losses and capital losses that we do not currently expect to realize. Our effective tax rate is based on expected income, statutory tax rates, and tax planning opportunities available to us in the various jurisdictions in which we operate. Significant judgment is required in determining our effective tax rate and in evaluating our tax positions. We establish accruals for uncertain tax positions when we believe that the full amount of the associated tax benefit may not be realized. To the extent we were to prevail in matters for which accruals have been established or would be required to pay amounts in excess of reserves, there could be a material effect on our income tax provisions in the period in which such determination is made. Recently Adopted Securities and Exchange Commission Rules The Inflation Reduction Act of 2022 imposed a 1% excise tax on the repurchase of more than $1 million of stock by publicly traded US corporations. The excise tax equals 1% of the fair market value of the stock repurchased during the tax year, reduced by the fair market value of stock issued during the tax year, including stock issued to employees of the corporation. The excise tax applies to repurchases of stock made after December 31, 2022. The amount of excise tax accrued during the years ended December 31, 2024 and 2023 was immaterial to our consolidated financial statements. Current-Year Adoption of Accounting Pronouncements The Financial Accounting Standards Board (FASB) amended the guidance in Accounting Standards Codification (ASC) 280, Segment Reporting , to require public companies disclose significant segment expenses and other segment items on an annual and interim basis and to provide in interim periods all disclosures about a reportable segment’s profit or loss and assets that are currently required annually. The guidance is effective for public entities for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The guidance is applied retrospectively to all periods presented in the financial statements, unless it is impracticable. We adopted the new standard when it was effective for us beginning with our 2024 Form 10-K. The amended guidance had minimal impact on our consolidated financial statements and disclosures. See Note 6. Pending Adoption of Recent Accounting Pronouncements In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740) Improvements to Income Tax Disclosures (ASU 2023-09) enhancing the transparency and decision usefulness of income tax disclosures. ASU 2023-09 addresses investor requests for more transparency about income tax information through improvements to income tax disclosures primarily related to the rate reconciliation and income taxes paid information. ASU 2023-09 is effective for annual periods beginning after December 15, 2024, with early adoption permitted. The amendments in ASU 2023-09 are applied on a prospective basis, though retrospective application is permitted. We did not early adopt this pronouncement and are in the process of evaluating its impact on our consolidated financial statements and related disclosures. In March 2024, the SEC issued a final climate disclosure rule, which requires registrants to disclose climate-related information in registration statements and annual reports. The final rule also requires certain disclosures related to risk management and governance over climate-related risks, material climate targets and goals, and material Scope 1 and Scope 2 greenhouse gas emissions. For calendar year companies, the ruling requires certain disclosures in annual reports for the year ending December 31, 2025. On April 4, 2024, the SEC voluntarily stayed the final rule pending the completion of judicial review of cases pending in the Eighth Circuit. We are continuing to evaluate the impact of the final rule on our consolidated financial statements and disclosures. In November 2024, the FASB issued guidance to improve the disclosure of expenses in commonly presented expense captions. The new guidance requires a public entity to provide tabular disclosure, on an annual and interim basis, of amounts for the following expense categories: (1) purchases of inventory, (2) employee compensation, (3) depreciation and (4) intangible asset amortization, as included in each relevant expense caption. A relevant expense caption is an expense caption presented on the face of the income statement that contains any of the expense categories noted. Additionally, on an annual and interim basis, a qualitative description is required for amounts remaining in relevant expense captions that are not separately disaggregated quantitatively. The guidance also requires certain amounts that are currently required to be disclosed to be included in the same tabular disclosure as these disaggregation requirements. Furthermore, on an annual and interim basis, a public entity is required to separately disclose selling expenses and annually, disclose a description of the selling expenses. The guidance is effective for 2027 annual reporting, and in the first quarter of 2028 for interim reporting, with early adoption permitted, to be applied on a prospective basis, with retrospective application permitted. We will adopt the guidance when it becomes effective, in our 2027 annual reporting and each quarter thereafter, on a prospective basis.

Revenues

Revenues	12 Months Ended
Revenues	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenues	Revenues Revenues are recognized when control of the promised goods or services is transferred to our customers and in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. Taxes collected from customers and remitted to governmental authorities are not included in our revenues. We do not evaluate a contract for a significant financing component when the time between cash collection and performance is less than one year. The following table presents our revenues disaggregated by major product category (in thousands). Broadband Solutions Automation Solutions Smart Buildings Solutions Total Year Ended December 31, 2024 Smart Infrastructure Solutions $ 598,215 $ — $ 545,575 $ 1,143,790 Automation Solutions — 1,317,189 — 1,317,189 Total $ 598,215 $ 1,317,189 $ 545,575 $ 2,460,979 Year Ended December 31, 2023 Smart Infrastructure Solutions $ 555,030 $ — $ 567,801 $ 1,122,831 Automation Solutions — 1,389,253 — 1,389,253 Total $ 555,030 $ 1,389,253 $ 567,801 $ 2,512,084 Year Ended December 31, 2022 Smart Infrastructure Solutions $ 571,426 $ — $ 627,052 $ 1,198,478 Automation Solutions — 1,408,007 — 1,408,007 Total $ 571,426 $ 1,408,007 $ 627,052 $ 2,606,485 The following table presents our revenues disaggregated by geography, based on the location of the customer purchasing the product (in thousands). Americas EMEA APAC Total Revenues Year Ended December 31, 2024 Smart Infrastructure Solutions $ 853,539 $ 173,023 $ 117,228 $ 1,143,790 Automation Solutions 782,312 335,396 199,481 1,317,189 Total $ 1,635,851 $ 508,419 $ 316,709 $ 2,460,979 Year Ended December 31, 2023 Smart Infrastructure Solutions $ 824,991 $ 180,880 $ 116,960 $ 1,122,831 Automation Solutions 787,739 385,454 216,060 1,389,253 Total $ 1,612,730 $ 566,334 $ 333,020 $ 2,512,084 Year Ended December 31, 2022 Smart Infrastructure Solutions $ 915,491 $ 149,327 $ 133,660 $ 1,198,478 Automation Solutions 816,508 372,473 219,026 1,408,007 Total $ 1,731,999 $ 521,800 $ 352,686 $ 2,606,485 We generate revenues primarily by selling products and delivering complete connection solutions. We also generate revenues from providing support and professional services. We sell our products to distributors, end-users, installers, and directly to original equipment manufacturers. At times, we enter into arrangements that involve the delivery of multiple performance obligations. For these arrangements, revenue is allocated to each performance obligation based on its relative standalone selling price and recognized when or as each performance obligation is satisfied. Generally, we determine standalone selling price using the prices charged to customers on a standalone basis. Typically, payments are due after control transfers. Most of our performance obligations related to the sale of products are satisfied at a point in time when control of the product is transferred to the customer, which generally occurs when the product has been shipped or delivered from our facility to our customers, the customer has legal title to the product, and we have a present right to payment for the product. We also consider any customer acceptance clauses in determining when control has transferred to the customer and typically, these clauses are not substantive. The amount of consideration we receive and revenue we recognize varies due to rebates, returns, and price adjustments. We estimate the expected rebates, returns, and price adjustments based on an analysis of historical experience, anticipated sales demand, and trends in product pricing. For example, our estimate of price adjustments is generally based on our historical price adjustments as a percentage of revenues and the average time period between the original sale and the issuance of the price adjustment. We adjust our estimate of revenue for variable consideration at the earlier of when the most likely amount of consideration we expect to receive changes or when the consideration becomes fixed. We adjust other current assets and cost of sales for the estimated level of returns. Adjustments to revenue for performance obligations satisfied in prior periods was not significant during the year ended December 31, 2024. The following table presents estimated and accrued variable consideration: December 31, 2024 December 31, 2023 (In thousands) Accrued rebates included in accrued liabilities $ 51,063 $ 49,255 Accrued returns included in accrued liabilities 15,950 15,570 Price adjustment recognized against gross accounts receivable 29,100 26,005 Depending on the terms of an arrangement, we may defer the recognition of a portion of the consideration received because we must satisfy a future performance obligation. Consideration allocated to support services under a support and maintenance contract is typically paid in advance and recognized ratably over the term of the service. Consideration allocated to professional services is recognized when or as the services are performed depending on the terms of the arrangement. Our contract terms for support, maintenance, and professional services normally require payment within one year or less of when the services will be provided. As of December 31, 2024, total deferred revenue was $40.1 million, and of this amount, $29.8 million is expected to be recognized within the next twelve months, and the remaining $10.3 million is long-term and will be recognized over a period greater than twelve months. The following table presents deferred revenue activity (in thousands): Balance at December 31, 2022 $ 33,243 New deferrals 35,157 Acquisitions 104 Revenue recognized (37,442) Balance at December 31, 2023 $ 31,062 New deferrals 57,133 Revenue recognized (48,067) Balance at December 31, 2024 $ 40,128 Service-type warranties repre sent $12.9 million of the deferred revenue balance at December 31, 2024, and of this amount $4.9 million is expected to be recognized in the next twelve months, and the remaining $8.0 million is long-term and will be recognized over a period greater than twelve months. At December 31, 2024, we did not have any material contract assets recorded in the consolidated balance sheets. We expense sales commissions as incurred when the duration of the related revenue arrangement is one year or less. We capitalize sales commissions when the original duration of the related revenue arrangement is longer than one year, and we amortize it over the related revenue arrangement period. Total capitalized sales commissions were not material for the years ended December 31, 2024 , 2023, and 2022. We recognized $25.4 million

Acquisitions

Acquisitions	12 Months Ended
Acquisitions	Dec. 31, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Acquisitions	Acquisitions On September 16, 2024, we acquired Voleatech with cash on hand for €5.0 million ($5.6 million), net of cash acquired and accounted for the acquisition as a business combination. The acquisition includes a potential earn-out up to €3.0 million based upon certain targets over three years, which will be accounted for as compensation cost. Voleatech, based in Germany, is known for their VT AIR Next Gen Firewall and expands Belden's Firewall product portfolio and overall planning of security in OT (Operational Technology) networking. Voleatech is reported within the Automation Solutions segment and is not material to our financial position or results of operations. On June 30, 2024, we acquired Precision with cash on hand for $289.6 million, net of cash acquired and accounted for the acquisition as a business combination. Precision, based in New York, is a leading supplier of value-added optical transceivers with proprietary software, firmware configurations, and related components. Precision is reported within the Smart Infrastructure Solutions segment. The following table summarizes the estimated, preliminary fair values of the assets acquired and liabilities assumed for Precision as of the acquisition date (in thousands): Receivables $ 24,191 Inventory 7,098 Other current assets 1,486 Property, plant and equipment 5,330 Intangible assets 194,100 Goodwill 121,604 Operating lease right-of-use assets 2,731 Total assets acquired $ 356,540 Accounts payable $ 11,662 Accrued liabilities 10,193 Deferred income taxes 42,585 Long-term operating lease liabilities 2,468 Total liabilities assumed $ 66,908 Net assets $ 289,632 The above purchase price allocation is preliminary and subject to revision as additional information about the fair value of individual assets and liabilities becomes available. The preliminary measurement of receivables, inventory, intangible assets, goodwill, deferred income taxes, and other assets and liabilities are subject to change. A change in the estimated fair value of the net assets acquired will change the amount of the purchase price allocated to goodwill. The preliminary fair value of acquired receivables is $24.2 million , which is equivalent to its gross contractual amount. A single estimate of fair value results from a complex series of judgments about future events and uncertainties and relies heavily on estimates and assumptions. If actual results are materially different than the assumptions we used to determine fair value of the assets and liabilities acquired, it is possible that adjustments to the carrying values of such assets and liabilities will have an impact on our net earnings. In particular, the valuation of the customer relationships intangible asset was complex and required significant judgment. We used the multi-period excess earnings method under the income approach to measure the customer relationships intangible asset. The key assumptions utilized in the valuation include discount rates, revenue growth rates, and profitability levels of forecasted results. These assumptions are forward-looking and could be affected by future economic and market conditions. For purposes of the above allocation, we based our preliminary estimate of the fair values for intangible assets on valuation studies performed by a third party valuation firm. We used various valuation methods including lost income, excess earnings, and relief from royalty to estimate the preliminary fair value of the identifiable intangible assets (Level 3 valuation). Goodwill and other intangible assets reflected above were determined to meet the criteria for recognition apart from tangible assets acquired and liabilities assumed. The goodwill is primarily attributable to the expansion of Belden’s solution selling capabilities, particularly the ability to offer more complete fiber infrastructure solutions. Our tax basis in the acquired goodwill is zero. The intangible assets related to the acquisition consisted of the following: Fair Value Amortization Period (In thousands) (In years) Intangible assets subject to amortization: Developed technologies $ 24,700 5.0 Customer relationships 161,900 20.0 Trademarks 3,000 2.5 Non-compete agreements 4,500 5.0 Total intangible assets subject to amortization $ 194,100 Intangible assets not subject to amortization: Goodwill $ 121,604 n/a Total intangible assets not subject to amortization $ 121,604 Total intangible assets $ 315,704 Weighted average amortization period 17.5 The amortizable intangible assets reflected in the table above were determined by us to have finite lives. The useful life for the developed technology intangible asset was based on the estimated time that the technology provides us with a competitive advantage and thus approximates the period and pattern of consumption of the intangible asset. The useful life for the customer relationship intangible asset was based on our forecasts of estimated sales from recurring customers. The useful life for the trademarks was based on the period of time we expect to continue to go to market using the trademarks. In August 2023, we acquired CloudRail GmbH (CloudRail) with cash on hand for $9.2 million, net of cash acquired and accounted for the acquisition as a business combination. CloudRail, based in Mannheim, Germany, specializes in sensor to cloud data solutions allowing end users to quickly connect sensors on their machinery to cloud providers to drive business insights and improve outcomes. The results of CloudRail have been included in our Consolidated Financial Statements from August 31, 2023 and are reported within the Automation Solutions segment. The CloudRail acquisition was not material to our financial position or results of operations. In April 2023, we acquired Berthold Sichert GmbH (Sichert) with cash on hand for $97.5 million, net of cash acquired and accounted for the acquisition as a business combination. Sichert, based in Berlin, Germany, designs and manufactures a portfolio of polycarbonate street cabinets utilized in outside plant passive optical networks (“PON”) and 5G networks. The results of Sichert have been included in our Consolidated Financial Statements from April 17, 2023 and are reported within the Smart Infrastructure Solutions segment. The Sichert acquisition was not material to our results of operations. The following table summarizes the estimated fair values of the assets acquired and liabilities assumed as of the acquisition date (in thousands): Receivables $ 5,093 Inventory 7,590 Other current assets 2,733 Property, plant and equipment 13,135 Intangible assets 44,328 Goodwill 32,243 Deferred income taxes 433 Operating lease right-of-use assets 131 Other long-lived assets 4,559 Total assets acquired $ 110,245 Accounts payable $ 1,907 Accrued liabilities 4,283 Deferred income taxes 6,551 Total liabilities assumed $ 12,741 Net assets $ 97,504 The fair value of acquired receivables is $5.1 million, which is equivalent to its gross contractual amount. A single estimate of fair value results from a complex series of judgments about future events and uncertainties and relies heavily on estimates and assumptions. The judgments we have used in estimating the fair values assigned to each class of acquired assets and assumed liabilities could materially affect the results of our operations. For purposes of the above allocation, we based our estimate of the fair values for intangible assets on valuation studies performed by a third party valuation firm. We used various valuation methods including excess earnings, and relief from royalty to estimate the fair value of the identifiable intangible assets (Level 3 valuation). Goodwill and other intangible assets reflected above were determined to meet the criteria for recognition apart from tangible assets acquired and liabilities assumed. The goodwill is primarily attributable to the expansion of broadband product offerings in end-to-end solutions. Our tax basis in the acquired goodwill is zero. The intangible assets related to the acquisition consisted of the following: Fair Value Amortization Period (In thousands) (In years) Intangible assets subject to amortization: Customer relationships $ 41,161 20.0 Trademarks 2,184 7.0 Sales backlog 983 0.2 Total intangible assets subject to amortization $ 44,328 Intangible assets not subject to amortization: Goodwill $ 32,243 n/a Total intangible assets not subject to amortization $ 32,243 Total intangible assets $ 76,571 Weighted average amortization period 18.9 The amortizable intangible assets reflected in the table above were determined by us to have finite lives. The useful life for the customer relationship intangible asset was based on our forecasts of estimated sales from recurring customers. The useful life for the trademarks was based on the period of time we expect to continue to go to market using the trademarks. During 2022, we completed three acquisitions. On January 17, 2022, we acquired Macmon for $41.9 million, net of cash acquired. Macmon, based in Berlin, Germany, is a leading provider of products and services that secure network infrastructure in a variety of mission critical industries. On March 3, 2022, we acquired NetModule for $23.5 million, net of cash acquired. NetModule, based in Bern, Switzerland, is a leading provider of reliable, fast and secure wireless network infrastructures through advanced capabilities in 5G and WiFi6 technologies in a variety of mission critical industries with a strong focus on mass transit and intelligent traffic systems within the transportation vertical. On April 15, 2022, we acquired CAI for $19.0 million, net of cash acquired. CAI is headquartered in Anniston, Alabama and designs, manufactures, and sells a range of plug-in radio frequency filters used in outside plant hybrid fiber-coax nodes. The results of operations of each acquisition have been included in our results of operations from their respective acquisition dates. The three acquisitions were not material to our consolidated results of operations. Macmon and NetModule are included in the Automation Solutions segment, and CAI is included in the Smart Infrastructure Solutions segment. All three acquisitions were funded with cash on hand and accounted for as a business combination. Precision and Voleatech collectively constituted approximately 3% and (1%) of our revenues and income before taxes for the year ended December 31, 2024, respectively. The following table illustrates the unaudited pro forma effect on operating results as if the Precision acquisition had been completed as of January 1, 2023. Years Ended December 31, 2024 2023 (In thousands, except per share data) (Unaudited) Revenues $ 2,531,820 $ 2,640,396 Net income attributable to Belden stockholders 202,947 232,713 Diluted income per share attributable to Belden stockholders $ 4.91 $ 5.43 For purposes of the unaudited pro forma disclosures, the year ended December 31, 2023 includes nonrecurring expenses directly attributable to the business combination of $9.4 million and $0.3 million for integration costs and inventory fair value adjustments, respectively. The above unaudited pro forma financial information is presented for informational purposes only and does not purport to represent what our results of operations would have been had we completed the acquisition on the date assumed, nor is it necessarily indicative of the results that may be expected in future periods. Pro forma adjustments exclude cost savings from any synergies resulting from the acquisition.

Disposals

Disposals	12 Months Ended
Disposals	Dec. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]
Disposals	Disposals Tripwire On February 22, 2022, we sold Tripwire for gross cash consideration of $350.0 million. T he divestiture of Tripwire represented a strategic shift impacting our operations and financial results. As a result, the Tripwire disposal group, which was included in our Automation Solutions segment, is reported within discontinued operations. We recognized a loss on disposal of discontinued operations, net of tax of $9.2 million during 2022. The following table summarizes the operating results of the Tripwire disposal group up to the February 22, 2022 disposal date: January 1 - (In thousands) Revenues $ 12,067 Cost of sales (3,256) Gross profit 8,811 Selling, general and administrative expenses (8,185) Research and development expenses (5,528) Amortization of intangible assets (638) Loss before taxes $ (5,540) From January 1, 2022 to February 22 , 2022, th e Tripwire disposal group did not have any significant capital expenditures nor non-cash charges for investing activities

Operating Segments and Geograph

Operating Segments and Geographic Information	12 Months Ended
Operating Segments and Geographic Information	Dec. 31, 2024
Segment Reporting [Abstract]
Operating Segments and Geographic Information	Operating Segments and Geographic Information We are organized around two global businesses: Smart Infrastructure Solutions and Automation Solutions. As Belden continues to advance forward with solutions focused on data infrastructure, we renamed our two reportable segments during 2024 from Enterprise Solutions and Industrial Automation Solutions to Smart Infrastructure Solutions and Automation Solutions, respectively. The composition of the segments did not change as a result of these name changes. Each of the global businesses represents a reportable segment. Our chief operating decision maker is our President and Chief Executive Officer. The key measure of segment profit or loss used by him to review segment operating results is Segment EBITDA. Segment EBITDA excludes certain items, including depreciation expense; amortization of intangibles; asset impairment; severance, restructuring, and acquisition integration costs; adjustments related to acquisitions and divestitures; and other costs. We allocate corporate expenses to the segments for purposes of measuring Segment EBITDA. Corporate expenses are allocated on the basis of each segment’s relative EBITDA prior to the allocation. Segment Revenues represent non-affiliate revenues. Our measure of segment assets does not include cash, goodwill, intangible assets, deferred tax assets, or corporate assets. All goodwill is allocated to reporting units of our segments for purposes of impairment testing. Operating Segment Information Years Ended December 31, 2024 2023 2022 (In thousands) Smart Infrastructure Solutions Segment Revenues $ 1,143,790 $ 1,122,831 $ 1,198,478 Affiliate Revenues 142 127 633 Segment Cost of Sales (789,272) (774,958) (852,231) Segment Selling, General and Administrative Expenses (177,414) (171,873) (160,802) Segment Research and Development Expenses (37,154) (27,020) (24,561) Segment EBITDA $ 140,092 $ 149,107 $ 161,517 Segment assets $ 663,623 $ 637,105 $ 593,653 Expenditures of property, plant and equipment $ 33,343 $ 36,237 $ 33,535 Items excluded from segment measures: Depreciation expense $ 26,231 $ 24,943 $ 23,387 Amortization of intangibles 28,642 20,085 17,595 Amortization of software development intangible assets 12 — 54 Adjustments related to acquisitions and divestitures 3,572 5,359 5,589 Severance, restructuring, and acquisition integration costs 15,165 11,221 9,200 Years Ended December 31, 2024 2023 2022 (In thousands) Automation Solutions Segment Revenues $ 1,317,189 $ 1,389,253 $ 1,408,007 Affiliate Revenues 801 1,296 442 Segment Cost of Sales (701,251) (739,129) (792,681) Segment Selling, General and Administrative Expenses (275,024) (278,406) (260,694) Segment Research and Development Expenses (71,949) (85,686) (77,995) Segment EBITDA $ 269,766 $ 287,328 $ 277,079 Segment assets $ 783,353 $ 727,477 $ 677,235 Expenditures of property, plant and equipment $ 66,063 $ 64,072 $ 58,713 Items excluded from segment measures: Depreciation expense $ 30,152 $ 26,436 $ 23,282 Amortization of intangibles 20,152 20,290 20,265 Amortization of software development intangible assets 10,552 7,692 3,821 Adjustments related to acquisitions and divestitures 1,192 818 2,244 Severance, restructuring, and acquisition integration costs 7,649 13,931 7,485 Years Ended December 31, 2024 2023 2022 (In thousands) Total Segments Segment Revenues $ 2,460,979 $ 2,512,084 $ 2,606,485 Affiliate Revenues 943 1,423 1,075 Segment Cost of Sales (1,490,523) (1,514,087) (1,644,912) Segment Selling, General and Administrative Expenses (452,438) (450,279) (421,496) Segment Research and Development Expenses (109,103) (112,706) (102,556) Segment EBITDA $ 409,858 $ 436,435 $ 438,596 Segment assets $ 1,446,976 $ 1,364,582 $ 1,270,888 Expenditures of property, plant and equipment $ 99,406 $ 100,309 $ 92,248 Items excluded from segment measures: Depreciation expense $ 56,383 $ 51,379 $ 46,669 Amortization of intangibles 48,794 40,375 37,860 Amortization of software development intangible assets 10,564 7,692 3,875 Adjustments related to acquisitions and divestitures 4,764 6,177 7,833 Severance, restructuring, and acquisition integration costs 22,814 25,152 16,685 The following table is a reconciliation of the total of the reportable segments’ Revenues and EBITDA to consolidated revenues and consolidated income from continuing operations before taxes, respectively. Years Ended December 31, 2024 2023 2022 (In thousands) Total segment and consolidated revenues $ 2,460,979 $ 2,512,084 $ 2,606,485 Total Segment EBITDA $ 409,858 $ 436,435 $ 438,596 Depreciation expense (56,383) (51,379) (46,669) Amortization of intangibles (48,794) (40,375) (37,860) Severance, restructuring, and acquisition integration costs (1) (22,814) (25,152) (16,685) Amortization of software development intangible assets (10,564) (7,692) (3,875) Adjustments related to acquisitions and divestitures (2) (4,764) (6,177) (7,833) Gain on sale of assets (3) — 12,056 37,891 Eliminations (79) (198) (231) Consolidated operating income 266,460 317,518 363,334 Interest expense, net (38,303) (33,625) (43,554) Loss on debt extinguishment — — (6,392) Non-operating pension benefit (cost) (215) 1,863 4,005 Consolidated income from continuing operations before taxes $ 227,942 $ 285,756 $ 317,393 (1) Includes costs associated with acquisitions, productivity initiatives, and manufacturing footprint actions. (2) Includes fair value adjustments of acquired assets and costs associated with a former subsidiary that was previously divested. (3) During 2023, we sold certain real estate in Canada for $13.8 million, net of transaction costs and recognized a $12.1 million pre-tax gain on sale. During 2022, we sold certain real estate in the United States for $42.2 million, net of transaction costs and recognized a $37.9 million pre-tax gain on sale. See Note 11, Property, Plant, and Equipment , for details. Below are reconciliations of other segment measures to the consolidated totals. Years Ended December 31, 2024 2023 2022 (In thousands) Total segment assets $ 1,446,976 $ 1,364,582 $ 1,270,888 Cash and cash equivalents 370,302 597,044 687,676 Goodwill 1,018,677 907,331 862,253 Intangible assets, less accumulated amortization 419,074 269,144 246,830 Deferred income taxes 16,353 15,739 14,642 Corporate assets 56,556 86,351 79,386 Total assets $ 3,327,938 $ 3,240,191 $ 3,161,675 Total segment expenditures of property, plant and equipment $ 99,406 $ 100,309 $ 92,248 Corporate expenditures of property, plant and equipment 29,694 16,422 12,846 Total expenditures of property, plant and equipment $ 129,100 $ 116,731 $ 105,094 Geographic Information The Company attributes foreign sales based on the location of the customer purchasing the product. The table below summarizes net sales and long-lived assets for the years ended December 31, 2024, 2023, and 2022 for the following countries: U.S., Canada, China, and Germany. No other individual foreign country’s net sales or long-lived assets are material to the Company. United Canada China Germany All Other Total (In thousands, except percentages) Year ended December 31, 2024 Revenues $ 1,392,262 $ 160,012 $ 92,108 $ 118,256 $ 698,341 $ 2,460,979 Percent of total revenues 57 % 6 % 4 % 5 % 28 % 100 % Long-lived assets $ 290,282 $ 13,799 $ 38,622 $ 62,170 $ 154,180 $ 559,053 Year ended December 31, 2023 Revenues $ 1,383,212 $ 169,122 $ 104,718 $ 134,130 $ 720,902 $ 2,512,084 Percent of total revenues 55 % 7 % 4 % 5 % 29 % 100 % Long-lived assets $ 230,267 $ 13,355 $ 45,326 $ 67,758 $ 144,606 $ 501,312 Year ended December 31, 2022 Revenues $ 1,448,247 $ 188,013 $ 126,904 $ 131,485 $ 711,836 $ 2,606,485 Percent of total revenues 56 % 7 % 5 % 5 % 27 % 100 % Long-lived assets $ 203,070 $ 12,805 $ 45,866 $ 44,061 $ 122,565 $ 428,367 Major Customer Revenues generated in both the Smart Infrastructure Solutions and Automation Solutions segments from our largest customer were approximately $348.1 million (14% of revenues), $378.1 million (15% of revenues), and $387.7 million (15% of revenues) for the years ended December 31, 2024, 2023, and 2022, respectively. At December 31, 2024 and 2023, we had $55.9 million and $61.9 million in accounts receivable outstanding from this customer, which represented approximately 14% and 15% of our total accounts receivable balance as of December 31, 2024 and 2023, respectively.

Noncontrolling Interest

Noncontrolling Interest	12 Months Ended
Noncontrolling Interest	Dec. 31, 2024
Noncontrolling Interest [Abstract]
Noncontrolling Interest	Noncontrolling Interest During 2023, we sold our 51% ownership interest in Shanghai Hi-Tech Control System Co, Ltd to (Hite) for $0.9 million and recognized a $0.4 million pretax gain on sale. The sale also includes $0.6 million of potential earnout payments. The joint venture developed and provided certain Automation Solutions products and integrated solutions to customers in China. The joint venture was determined to not have sufficient equity at risk; therefore, it was considered a variable interest entity. As Belden was the primary beneficiary of the joint venture, due to both our ownership percentage and control over the activities of the joint venture, we consolidated the joint venture in our financial statements and presented the results of the joint venture attributable to Hite’s ownership as net income attributable to noncontrolling interest in the Consolidated Statements of Operations up to April 28, 2023 when we sold and deconsolidated the entity. The joint venture was not material to our consolidated financial statements as of or for the years ended December 31, 2023 or 2022.

Income Per Share

Income Per Share	12 Months Ended
Income Per Share	Dec. 31, 2024
Earnings Per Share [Abstract]
Income Per Share	Income Per Share The following table presents the basis of the income per share computations: Years Ended December 31, 2024 2023 2022 (In thousands) Numerator: Income from continuing operations $ 198,414 $ 242,556 $ 267,748 Less: Net income (loss) attributable to noncontrolling interest (19) (203) 159 Income from continuing operations attributable to Belden common stockholders 198,433 242,759 267,589 Add: Loss from discontinued operations, net of tax — — (3,685) Add: Loss on disposal of discontinued operations, net of tax — — (9,241) Net income attributable to Belden common stockholders $ 198,433 $ 242,759 $ 254,663 Denominator: Weighted average shares outstanding, basic 40,694 42,237 43,845 Effect of dilutive common stock equivalents 605 622 692 Weighted average shares outstanding, diluted 41,299 42,859 44,537 Basic weighted average shares outstanding is used to calculate diluted loss per share when the numerator is a loss because using diluted weighted average shares outstanding would be anti-dilutive. For the years ended December 31, 2024, 2023, and 2022, diluted weighted average shares outstanding do not include outstanding equity awards of 0.1 million, 0.2 million, and 0.8 million, respectively, because they are anti-dilutive. In addition, for the years ended December 31, 2024, 2023, and 2022, diluted weighted average shares outstanding do not include outstanding equity awards of 0.1 million, 0.3 million, and 0.2 million, respectively, because the related performance conditions have not been satisfied. For purposes of calculating basic earnings per share, unvested restricted stock units are not included in the calculation of basic weighted average shares outstanding until all necessary conditions have been satisfied and issuance of the shares underlying the restricted stock units is no longer contingent. Necessary conditions are not satisfied until the vesting date, at which time holders of our restricted stock units receive shares of our common stock. For purposes of calculating diluted earnings per share, unvested restricted stock units are included to the extent that they are dilutive. In determining whether unvested restricted stock units are dilutive, each issuance of restricted stock units is considered separately. Once a restricted stock unit has vested, it is included in the calculation of both basic and diluted weighted average shares outstanding.

Credit Losses

Credit Losses	12 Months Ended
Credit Losses	Dec. 31, 2024
Credit Loss [Abstract]
Credit Losses	Credit Losses We are exposed to credit losses primarily through sales of products and services. Our expected loss allowance methodology for accounts receivable is developed using historical collection experience, current and future economic and market conditions and a review of the current status of customers' trade accounts receivables. Due to the short-term nature of such receivables, the estimate of accounts receivable that may not be collected is based upon the aging of accounts receivable balances and the financial condition of customers. Additionally, specific allowance amounts are established to record the appropriate provision for customers that have a higher probability of default. Our monitoring activities include timely account reconciliation, dispute resolution, payment confirmation, consideration of customers' financial condition and macroeconomic conditions. Balances are written off when determined to be uncollectible. Estimates are used to determine the allowance, which is based upon an assessment of anticipated payments as well as other information that is reasonably available. The following table presents the activity in the allowance for doubtful accounts for the years ended December 31, 2024 and 2023 (in thousands). Balance at December 31, 2022 $ 7,954 Current period provision 16,167 Recoveries collected (861) Write-offs (154) Currency impact 8 Balance at December 31, 2023 $ 23,114 Current period provision 3,198 Recoveries collected (677) Write-offs (167) Currency impact (211) Balance at December 31, 2024 $ 25,257

Inventories

Inventories	12 Months Ended
Inventories	Dec. 31, 2024
Inventory Disclosure [Abstract]
Inventories	Inventories The major classes of inventories were as follows: December 31, 2024 2023 (In thousands) Raw materials $ 187,530 $ 185,233 Work-in-process 40,442 41,197 Finished goods 186,237 208,425 Gross inventories 414,209 434,855 Excess and obsolete reserves (71,110) (67,868) Net inventories $ 343,099 $ 366,987

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
Property, Plant and Equipment	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment The carrying values of property, plant and equipment were as follows: December 31, 2024 2023 (In thousands) Land and land improvements $ 24,841 $ 27,627 Buildings and leasehold improvements 125,292 108,960 Machinery and equipment 687,430 666,527 Computer equipment and software 145,281 132,668 Construction in process 174,811 157,056 Gross property, plant and equipment 1,157,655 1,092,838 Accumulated depreciation (662,030) (641,769) Net property, plant and equipment $ 495,625 $ 451,069 Depreciation Expense We recognized depreciation expense in income from continuing operations of $56.4 million, $51.4 million, and $46.7 million in 2024, 2023, and 2022, respectively. Gain on Sale of Assets During 2022, we sold certain real estate in the United States for $42.2 million, net of transaction costs and recognized a $37.9 million pre-tax gain on sale. This gain on sale was excluded from Segment EBITDA of our Automation Solutions segment. Sale-Leasebacks During 2023, we sold certain real estate in Canada as part of a sale and leaseback transaction for CAD$18.6 million (approximately $13.8 million), net of transaction costs and recognized a $12.1 million pre-tax gain on sale. This gain on sale was excluded from Segment EBITDA of our Automation Solutions segment. The lease is for a term of 10 years and as of December 31, 2024, had a total right-of-use asset balance of $8.6 million .

Leases

Leases	12 Months Ended
Leases	Dec. 31, 2024
Leases [Abstract]
Leases	Leases We have operating and finance leases for properties, including manufacturing facilities, warehouses, and office space; as well as vehicles and certain equipment. We make certain judgments in determining whether a contract contains a lease in accordance with ASU 2016-02. Our leases have remaining lease terms of less than 1 year to 20 years, some of which include options to extend the lease for a period of up to 15 years and some include options to terminate the leases within 1 year. We do not assume renewals in our determination of the lease term unless the renewals are deemed to be reasonably certain as of the commencement date of the lease. Our lease agreements do not contain material residual value guarantees, and our variable lease payments were $3.5 million and $3.1 million during the years ended December 31, 2024 and 2023, respectively. We have entered into various short-term operating leases with an initial term of twelve months or less. These leases are not recorded on our balance sheet as of December 31, 2024 or 2023 , and the rent expense for short-term leases was not material. We have certain property and equipment lease contracts that may contain lease and non-lease components, and we have elected to utilize the practical expedient to account for these components together as a single combined lease component. As the rate implicit in most of our leases is not readily determinable, we use the incremental borrowing rate to determine the present value of the lease payments, which is unique to each leased asset and is based upon the term, commencement date, location, and local currency of the leased asset as well as the credit rating of the legal entity leasing the asset. The components of lease expense were as follows: Years Ended December 31, 2024 2023 2022 (In thousands) Operating lease cost $ 27,751 $ 22,562 $ 21,420 Finance lease cost Amortization of right-of-use asset $ 997 $ 780 $ 878 Interest on lease liabilities 571 330 258 Total finance lease cost $ 1,568 $ 1,110 $ 1,136 Supplemental cash flow information related to leases was as follows: Years Ended December 31, 2024 2023 2022 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 22,175 $ 19,080 $ 18,338 Operating and financing cash flows from finance leases were not material for the years ended December 31, 2024, 2023 and 2022. Supplemental balance sheet information related to leases was as follows: December 31, 2024 2023 (In thousands, except lease term and discount rate) Operating leases: Total operating lease right-of-use assets $ 118,551 $ 89,686 Accrued liabilities $ 19,437 $ 18,226 Long-term operating lease liabilities 100,049 74,941 Total operating lease liabilities $ 119,486 $ 93,167 Finance leases: Other long-lived assets, at cost $ 12,257 $ 6,560 Accumulated depreciation (2,322) (1,347) Other long-lived assets, net $ 9,935 $ 5,213 Accrued liabilities $ 1,648 $ 719 Other long-term liabilities 8,845 6,084 Total finance lease liabilities $ 10,493 $ 6,803 Weighted Average Remaining Lease Term Operating leases 10 years 6 years Finance leases 6 years 9 years Weighted Average Discount Rate Operating leases 6.2% 5.0 % Finance leases 4.8% 4.3 % The following table summarizes maturities of lease liabilities as of December 31, 2024 (in thousands): 2025 $ 28,148 2026 25,596 2027 16,739 2028 14,947 2029 12,820 Thereafter 80,017 Total $ 178,267 The following table summarizes maturities of lease liabilities as of December 31, 2023 (in thousands): 2024 $ 18,664 2025 18,173 2026 16,527 2027 9,074 2028 7,350 Thereafter 28,068 Total $ 97,856 In addition, we guaranteed the lease payments for certain property leases of a former subsidiary with expiration dates extending up to 2035. These lease guarantees were retained by Belden and not transferred to the buyer of the former subsidiary. As of December 31, 2024, the fixed, remaining base rent payments were approximately $20 million . In 2024, 2023, and 2022, we recognized $3.3 million, $4.1 million, and $10.1 million, respectively, related to the guarantees in selling, general and administrative expenses. These costs were excluded from Segment EBITDA of our Smart Infrastructure Solutions segment. As of December 31, 2024 and 2023, we had a liability for expected, future payments of $12.3 million and $11.3 million, respectively . The liability is based on certain assumptions that we continually reassess on an ongoing basis. We will update the estimated liability balance for changes in assumptions as needed.
Leases	Leases We have operating and finance leases for properties, including manufacturing facilities, warehouses, and office space; as well as vehicles and certain equipment. We make certain judgments in determining whether a contract contains a lease in accordance with ASU 2016-02. Our leases have remaining lease terms of less than 1 year to 20 years, some of which include options to extend the lease for a period of up to 15 years and some include options to terminate the leases within 1 year. We do not assume renewals in our determination of the lease term unless the renewals are deemed to be reasonably certain as of the commencement date of the lease. Our lease agreements do not contain material residual value guarantees, and our variable lease payments were $3.5 million and $3.1 million during the years ended December 31, 2024 and 2023, respectively. We have entered into various short-term operating leases with an initial term of twelve months or less. These leases are not recorded on our balance sheet as of December 31, 2024 or 2023 , and the rent expense for short-term leases was not material. We have certain property and equipment lease contracts that may contain lease and non-lease components, and we have elected to utilize the practical expedient to account for these components together as a single combined lease component. As the rate implicit in most of our leases is not readily determinable, we use the incremental borrowing rate to determine the present value of the lease payments, which is unique to each leased asset and is based upon the term, commencement date, location, and local currency of the leased asset as well as the credit rating of the legal entity leasing the asset. The components of lease expense were as follows: Years Ended December 31, 2024 2023 2022 (In thousands) Operating lease cost $ 27,751 $ 22,562 $ 21,420 Finance lease cost Amortization of right-of-use asset $ 997 $ 780 $ 878 Interest on lease liabilities 571 330 258 Total finance lease cost $ 1,568 $ 1,110 $ 1,136 Supplemental cash flow information related to leases was as follows: Years Ended December 31, 2024 2023 2022 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 22,175 $ 19,080 $ 18,338 Operating and financing cash flows from finance leases were not material for the years ended December 31, 2024, 2023 and 2022. Supplemental balance sheet information related to leases was as follows: December 31, 2024 2023 (In thousands, except lease term and discount rate) Operating leases: Total operating lease right-of-use assets $ 118,551 $ 89,686 Accrued liabilities $ 19,437 $ 18,226 Long-term operating lease liabilities 100,049 74,941 Total operating lease liabilities $ 119,486 $ 93,167 Finance leases: Other long-lived assets, at cost $ 12,257 $ 6,560 Accumulated depreciation (2,322) (1,347) Other long-lived assets, net $ 9,935 $ 5,213 Accrued liabilities $ 1,648 $ 719 Other long-term liabilities 8,845 6,084 Total finance lease liabilities $ 10,493 $ 6,803 Weighted Average Remaining Lease Term Operating leases 10 years 6 years Finance leases 6 years 9 years Weighted Average Discount Rate Operating leases 6.2% 5.0 % Finance leases 4.8% 4.3 % The following table summarizes maturities of lease liabilities as of December 31, 2024 (in thousands): 2025 $ 28,148 2026 25,596 2027 16,739 2028 14,947 2029 12,820 Thereafter 80,017 Total $ 178,267 The following table summarizes maturities of lease liabilities as of December 31, 2023 (in thousands): 2024 $ 18,664 2025 18,173 2026 16,527 2027 9,074 2028 7,350 Thereafter 28,068 Total $ 97,856 In addition, we guaranteed the lease payments for certain property leases of a former subsidiary with expiration dates extending up to 2035. These lease guarantees were retained by Belden and not transferred to the buyer of the former subsidiary. As of December 31, 2024, the fixed, remaining base rent payments were approximately $20 million . In 2024, 2023, and 2022, we recognized $3.3 million, $4.1 million, and $10.1 million, respectively, related to the guarantees in selling, general and administrative expenses. These costs were excluded from Segment EBITDA of our Smart Infrastructure Solutions segment. As of December 31, 2024 and 2023, we had a liability for expected, future payments of $12.3 million and $11.3 million, respectively . The liability is based on certain assumptions that we continually reassess on an ongoing basis. We will update the estimated liability balance for changes in assumptions as needed.

Intangible Assets

Intangible Assets	12 Months Ended
Intangible Assets	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible Assets The carrying values of intangible assets were as follows: December 31, 2024 December 31, 2023 Gross Accumulated Net Gross Accumulated Net (In thousands) (In thousands) Goodwill $ 1,018,677 $ — $ 1,018,677 $ 907,331 $ — $ 907,331 Definite-lived intangible assets subject to amortization: Developed technology $ 341,303 $ (247,904) $ 93,399 $ 300,240 $ (219,210) $ 81,030 Customer relationships 454,298 (164,279) 290,019 296,616 (145,739) 150,877 Trademarks 72,804 (41,733) 31,071 43,862 (35,089) 8,773 Backlog 14,170 (13,705) 465 14,847 (13,483) 1,364 In-service research and development 5,000 (5,000) — 5,000 (5,000) — Non-compete agreements 5,265 (1,145) 4,120 810 (710) 100 Total intangible assets subject to amortization $ 892,840 $ (473,766) $ 419,074 $ 661,375 $ (419,231) $ 242,144 Indefinite-lived intangible assets not subject to amortization: Trademarks $ — $ — $ — $ 27,000 $ — $ 27,000 Total intangible assets not subject to amortization $ — $ — $ — $ 27,000 $ — $ 27,000 Intangible assets $ 892,840 $ (473,766) $ 419,074 $ 688,375 $ (419,231) $ 269,144 Segment Allocation of Goodwill and Trademarks The changes in the carrying amount of goodwill assigned to reporting units in our reportable segments are as follows: Smart Infrastructure Solutions Automation Solutions Consolidated (In thousands) Balance at December 31, 2022 $ 477,834 $ 384,419 $ 862,253 Acquisitions 32,243 5,816 38,059 Translation impact 1,447 5,572 7,019 Balance at December 31, 2023 $ 511,524 $ 395,807 $ 907,331 Acquisitions 120,962 2,620 123,582 Translation impact (3,128) (9,108) (12,236) Balance at December 31, 2024 $ 629,358 $ 389,319 $ 1,018,677 The changes in the carrying amount of indefinite-lived trademarks are as follows: Smart Infrastructure Solutions Automation Consolidated (In thousands) Balance at December 31, 2022 and 2023 $ 27,000 $ — $ 27,000 Reclassify to definite-lived (27,000) — (27,000) Balance at December 31, 2024 $ — $ — $ — Annual Impairment Test The annual measurement date for our goodwill impairment test is our fiscal November month-end. For our 2024 goodwill impairment test, we performed a qualitative assessment for all six reporting units and determined that it was more likely than not that the fair value of each reporting unit was greater than its respective carrying value. Therefore, we did not record any goodwill impairment in 2024. We did not recognize any goodwill or indefinite-lived intangible asset impairment in 2023 or 2022. Amortization Expense We recognized amortization expense in income from continuing operations of $59.4 million, $48.1 million, and $41.7 million in 2024, 2023, an d 2022, respectively. We expect to recognize annual amortization expense of $61.3 million in 2025, $50.7 million in 2026, $45.9 million in 2027, $36.8 million in 2028, and $31.0 million in 2029 related to our intangible assets balance as of December 31, 2024. The weighted-average amortization period for our customer relationships, trademarks, developed technology, non-compete agreements, and backlog is 19.5 years, 7.5 years, 7.3 years, 5.0 years, 5.0 years, and 5.0 years, respectively. At the beginning of 2024, we re-evaluated the useful life of a certain trademark in our Smart Infrastructure Solutions segment and concluded that an indefinite life for this trademark was no longer appropriate. We estimated a useful life of eight years for the trademark and will re-evaluate this estimate if and when our expected use of the trademark changes. We began amortizing the trademark in 2024, which resulted in amortization expense of $3.4 million for the year ended December 31, 2024. As of December 31, 2024 and 2023, the net book value of this trademark was $23.6 million and $27.0 million, respectively.

Accrued Liabilities

Accrued Liabilities	12 Months Ended
Accrued Liabilities	Dec. 31, 2024
Accrued Liabilities [Abstract]
Accrued Liabilities	Accrued Liabilities The carrying values of accrued liabilities were as follows: December 31, 2024 2023 (In thousands) Wages, severance and related taxes $ 79,479 $ 71,880 Accrued rebates 51,063 49,255 Employee benefits 26,101 27,487 Deferred revenue 29,781 23,718 Lease liabilities 21,085 18,945 Accrued interest 17,628 18,774 Other (individual items less than 5% of total current liabilities) 81,843 80,230 Accrued liabilities $ 306,980 $ 290,289

Restructuring Activities

Restructuring Activities	12 Months Ended
Restructuring Activities	Dec. 31, 2024
Restructuring and Related Activities [Abstract]
Restructuring Activities	Restructuring Activities During 2024, 2023 and 2022, we incurred costs related to the programs described below. We also incurred costs related to other individually insignificant programs. Productivity Initiative Program We initiated a productivity program in response to weaker economic conditions experienced in the second half of 2023. The Smart Infrastructure Solutions and Automation Solutions segments incurred $2.6 million and $0.5 million, respectively, of severance and other costs during the year ended December 31, 2024 and $3.6 million and $5.5 million, respectively, during the year ended December 31, 2023. Acquisition Integration Program We are integrating our recent acquisitions with our existing businesses to achieve desired cost savings, primarily by focusing on con solidating existing and acquired facilities as well as other support functions. The Smart Infrastructure Solutions segment incurred $11.6 million, $6.5 million, and $4.8 million of restructuring and integration costs during the years ended December 31, 2024, 2023, and 2022, respectively. The Automation Solutions segment incurred $2.1 million, $3.0 million, and $3.4 million of restructuring and integration co sts during the years ended December 31, 2024, 2023, and 2022, respectively. Manufacturing Footprint Program We consolidated our manufacturing footprint in the Americas region during 2022. The Smart Infrastructure Solutions and Automation Solutions segments incurred $3.3 million and $5.0 million, respectively, of severance and other costs during the year ended December 31, 2022. The following table summarizes the costs of the programs described above by segment, all of which were excluded from Segment EBITDA: Severance Restructuring Total Costs (In thousands) Year Ended December 31, 2024 Smart Infrastructure Solutions $ 1,824 $ 12,387 $ 14,211 Automation Solutions 52 2,557 2,609 Total $ 1,876 $ 14,944 $ 16,820 Year Ended December 31, 2023 Smart Infrastructure Solutions $ 4,180 $ 5,948 $ 10,128 Automation Solutions 4,674 3,852 8,526 Total $ 8,854 $ 9,800 $ 18,654 Year Ended December 31, 2022 Smart Infrastructure Solutions $ 1,070 $ 7,060 $ 8,130 Automation Solutions 493 7,847 8,340 Total $ 1,563 $ 14,907 $ 16,470 The restructuring and integration costs incurred during 2024, 2023, and 2022 primarily consisted of equipment transfer, costs to consolidate operating and support facilities, retention bonuses, relocation, travel, legal, and other costs. The majority of the restructuring and integration costs related to these actions were paid as incurred or are payable within the next 60 days. The following table summarizes the costs of the programs described above by financial statement line item in the Consolidated Statement of Operations: Years Ended December 31, 2024 2023 2022 (In thousands) Cost of sales $ 1,318 $ 1,667 $ 10,060 Selling, general and administrative expenses 15,375 15,362 6,410 Research and development expenses 127 1,625 — Total $ 16,820 $ 18,654 $ 16,470 Accrued Severance The table below sets forth severance activity included in accrued liabilities that occurred for the Acquisition Integration Program and Productivity Initiative Program described above (in thousands). Balance at December 31, 2022 $ — New charges 8,254 Cash payments (3,151) Foreign currency translation 68 Other adjustments (161) Balance at December 31, 2023 $ 5,010 New charges 1,876 Cash payments (1,208) Foreign currency translation (35) Other adjustments (564) Balance at December 31, 2024 $ 5,079

Long-Term Debt and Other Borrow

Long-Term Debt and Other Borrowing Arrangements	12 Months Ended
Long-Term Debt and Other Borrowing Arrangements	Dec. 31, 2024
Debt Disclosure [Abstract]
Long-Term Debt and Other Borrowing Arrangements	Long-Term Debt and Other Borrowing Arrangements The carrying values of our long-term debt and other borrowing arrangements were as follows: December 31, 2024 2023 (In thousands) Revolving credit agreement due 2026 $ — $ — Senior subordinated notes: 3.375% Senior subordinated notes due 2027 465,795 497,025 3.875% Senior subordinated notes due 2028 362,285 386,575 3.375% Senior subordinated notes due 2031 310,530 331,350 Total senior subordinated notes 1,138,610 1,214,950 Less unamortized debt issuance costs (8,509) (10,739) Long-term debt $ 1,130,101 $ 1,204,211 Revolving Credit Agreement due 2026 We have a $300.0 million multi-currency asset-based revolving credit facility (the Revolver). The maturity date of the Revolver is June 2, 2026. The borrowing base under the Revolver includes eligible accounts receivable; inventory; and property, plant and equipment of certain of our subsidiaries in the United States, Canada, Germany, the United Kingdom and the Netherlands. Interest on outstanding borrowings is variable, based upon SOFR or other similar indices in foreign jurisdictions, plus a spread that ranges from 1.25%-1.75%, depending upon our leverage position. Outstanding borrowings in the U.S. and Canada may also, at our election, be priced on a base rate plus a spread that ranges from 0.25% — 0.75%, depending on our leverage position. We pay a commitment fee on the total commitments of 0.25%. In the event we borrow more than 90% of our combined borrowing base or our borrowing base availability is less than $20.0 million, we are subject to a fixed charge coverage ratio covenant. As of December 31, 2024, we had no borrowings outstanding on the Revolver, and our available borrowing capacity was $282.4 million. Senior Subordinated Notes We have outstanding €450.0 million aggregate principal amount of 3.375% senior subordinated notes due 2027 (the 2027 Notes). The carrying value of the 2027 Notes as of December 31, 2024 is $465.8 million. The 2027 Notes are guaranteed on a senior subordinated basis by our current and future domestic subsidiaries. The 2027 Notes rank equal in right of payment with our senior subordinated notes due 2031 and 2028 and with any future subordinated debt, and they are subordinated to all of our senior debt and the senior debt of our subsidiary guarantors, including our Revolver. Interest is payable semiannually on January 15 and July 15 of each year. We have outstanding €350.0 million aggregate principal amount of 3.875% senior subordinated notes due 2028 (the 2028 Notes). The carrying value of the 2028 Notes as of December 31, 2024 is $362.3 million. The 2 028 Notes are guaranteed on a senior subordinated basis by our current and future domestic subsidiaries. The 2028 Notes rank equal in right of payment with our senior subordinated notes due 2031 and 2027 and with any future subordinated debt, and they are subordinated to all of our senior debt and the senior debt of our subsidiary guarantors, including our Revolver. Interest is payable semiannually on March 15 and September 15 of each year. We have outstanding €300.0 million aggregate principal amount of 3.375% senior subordinated notes due 2031 (the 2031 Notes). The carrying value of the 2031 Notes as of December 31, 2024 is $310.5 million. The 2031 Notes are guaranteed on a senior subordinated basis by our current and future domestic subsidiaries. The 2031 Notes rank equal in right of payment with our senior subordinated notes due 2028 and 2027 and with any future subordinated debt, and they are subordinated to all of our senior debt and the senior debt of our subsidiary guarantor s, including our Revolver. Interest is payable semiannually on January 15 and July 15 of each year. We had outstanding €200.0 million aggregate principal amount of 4.125% senior subordinated notes due 2026 (the 2026 Notes). In 2022, we repurchased the full €200.0 million 2026 Notes outstanding for cash consideration of €204.1 million ($227.9 million), including a redemption premium, and recognized a $6.4 million loss on debt extinguishment including the write-off of unamortized debt issuance costs. Fair Value of Long-Term Debt The fair value of our senior subordinated notes as of December 31, 2024 was approximately $1,126.6 million based on quoted prices of the debt instruments in inactive markets (Level 2 valuation). This amount represents the fair values of our senior subordinated notes with a carrying value of $1,138.6 million as of December 31, 2024. Redemption Prices The senior subordinated notes due 2027 and 2028 were redeemable after July 15, 2022 and March 15, 2023, respectively, and the senior subordinated notes due 2031 are redeemable after July 15, 2026 at the following redemption prices as a percentage of the face amount of the notes: Senior Subordinated Notes due 2027 2028 2031 Year Percentage Year Percentage Year Percentage 2022 101.688 % 2023 101.938 % 2026 101.688 % 2023 101.125 % 2024 101.292 % 2027 100.844 % 2024 100.563 % 2025 100.646 % 2028 100.422 % 2025 and thereafter 100.000 % 2026 and thereafter 100.000 % 2029 and thereafter 100.000 % Maturities Maturities on outstanding long-term debt and other borrowings during each of the five years subsequent to December 31, 2024 are as follows (in thousands): 2025 $ — 2026 — 2027 465,795 2028 362,285 2029 — Thereafter 310,530 $ 1,138,610

Net Investment Hedge

Net Investment Hedge	12 Months Ended
Net Investment Hedge	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Net Investment Hedge	Net Investment Hedge All of our euro denominated notes were issued by Belden Inc., a USD functional currency entity. As of December 31, 2024, €567.8 million of our outstanding foreign denominated debt is designated as a net investment hedge on the foreign currency risk of our net investment in our euro foreign operations. The objective of the hedge is to protect the net investment in the foreign operation against adverse changes in the euro exchange rate. The transaction gain or loss is reported in the translation

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Years Ended December 31, 2024 2023 2022 (in thousands) Income from continuing operations before taxes: United States operations $ 74,850 $ 86,805 $ 97,900 Foreign operations 153,092 198,951 219,493 Income from continuing operations before taxes $ 227,942 $ 285,756 $ 317,393 Income tax expense (benefit): Currently payable United States federal $ 29,589 $ 34,091 $ 34,310 United States state and local 1,573 3,900 4,801 Foreign 14,320 18,166 6,677 45,482 56,157 45,788 Deferred United States federal (6,342) (7,497) (446) United States state and local (1,041) (623) (50) Foreign (8,571) (4,837) 4,353 (15,954) (12,957) 3,857 Income tax expense $ 29,528 $ 43,200 $ 49,645 In addition to the above income tax expense associated with continuing operations, we also recorded an income tax benefit associated with discontinued operations of $2.5 million in 2022. Years Ended December 31, 2024 2023 2022 Effective income tax rate reconciliation from continuing operations: United States federal statutory rate 21.0% 21.0% 21.0% State and local income taxes (0.2)% 0.8% 1.2% Impact of change in tax contingencies 3.8% 0.3% 0.1% Foreign income tax rate differences (11.6)% (10.5)% (10.9)% Impact of change in deferred tax asset valuation allowance (0.5)% 0.5% (2.5)% Domestic permanent differences and tax credits (0.5)% 2.9% 6.3% Impact of share-based compensation 1.0% 0.1% 0.4% 13.0% 15.1% 15.6% In 2024, the most significant difference between the U.S. federal statutory tax rate and our effective tax rate was the impact of foreign tax rate differences. Foreign tax rate differences resulted in an income tax benefit of $26.4 million, $30.1 million, and $34.4 million in 2024, 2023, and 2022, respectively. Changes in tax contingencies, primarily associated with our foreign tax credit, was another significant difference between the U.S. federal statutory tax rate and our effective tax rate in 2024. If we were to repatriate foreign cash to the U.S., we may be required to accrue and pay U.S. taxes in accordance with applicable U.S. tax rules and regulations as a result of the repatriation. However, it is our intent to permanently reinvest the earnings of our non-U.S. subsidiaries in those operations and for continued non-U.S. growth opportunities. The components of deferred income taxes were as follows: December 31, 2024 2023 (In thousands) Components of deferred income tax balances: Deferred income tax liabilities: Plant, equipment, and intangibles $ (136,386) $ (98,112) Right of use asset (31,603) (21,440) (167,989) (119,552) Deferred income tax assets: Net operating loss, capital loss, and tax credit carryforwards 115,591 114,896 Reserves and accruals 54,085 41,474 Lease liability 32,351 22,073 Postretirement, pensions, and stock compensation 13,045 17,052 Valuation allowances (108,064) (109,676) 107,008 85,819 Net deferred income tax liability $ (60,981) $ (33,733) The net increase in deferred tax liabilities primarily relates to the deferred tax liabilities associated with the intangible assets of the Precision acquisition. As of December 31, 2024, we had $92.0 million of gross net operating loss carryforwards, $15.1 million of tax credit carryforwards, and $395.7 million of gross capital loss carryforwards. Unless otherwise utilized, net operating loss carryforwards will expire upon the filing of the tax returns for the following respective years: $9.1 million between 2025 and 2027 and $36.5 million between 2028 and 2043. Net operating loss with an indefinite carryforward period total $46.4 million. Of the $92.0 million in net operating loss carryforwards, we have determined, based on the weight of all available evidence, both positive and negative, that we will utilize $34.8 million of these net operating loss carryforwards within their respective expiration periods. A valuation allowance has been recorded on the remaining portion of the net operating loss carryforwards. Unless otherwise utilized, tax credit carryforwards of $15.1 million will expire as follows: $0.1 million in 2024, $8.5 million between 2025 and 2027 and $4.0 million between 2028 and 2043. Tax credit carryforwards with an indefinite carryforward period total $2.5 million. We have determined, based on the weight of all available evidence, both positive and negative, that we will utilize $11.8 million of these tax credit carryforwards within their respective expiration periods. A valuation allowance has been recorded on the remaining portion of the tax credit carryforwards. Unless otherwise utilized, of the $395.7 million in gross capital loss carryforwards, $351.5 million will expire between 2025 and 2029 and the remaining $44.2 million have an indefinite carryforward period. A full valuation allowance has been recorded as we do not expect to be able to utilize the capital losses. The following tables summarize our net operating loss carryforwards and tax credit carryforwards as of December 31, 2024 by jurisdiction: Net Operating Loss Carryforwards (In thousands) United States - Federal and various states $ 39,265 Germany 19,369 United Kingdom 17,771 Other 8,070 Australia 7,501 Total $ 91,976 Tax Credit Carryforwards (In thousands) United States $ 13,039 Belgium 2,046 Total $ 15,085 In 2024, we recognized a net $8.5 million increase to reserves for uncertain tax positions. A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows: 2024 2023 (In thousands) Balance at beginning of year $ 7,143 $ 6,180 Additions for tax positions of prior years 9,354 605 Additions based on tax positions related to the current year 524 358 Reduction for tax positions of prior years (1,340) — Balance at end of year $ 15,681 $ 7,143 The balance of $15.7 million at December 31, 2024 reflects tax positions that, if recognized, would impact our effective tax rate. Our practice is to recognize interest and penalties related to uncertain tax positions in interest expense and operating expenses, respectively. As of December 31, 2024 and 2023, we accrued $0.1 million and $0.0 million for the payment of interest and penalties. Our federal tax return for the tax years 2015 and later remain subject to examination by the Internal Revenue Service. Our state and foreign income tax returns for the tax years 2014 and later remain subject to examination by various state and foreign tax authorities.

Pension and Other Postretiremen

Pension and Other Postretirement Benefits	12 Months Ended
Pension and Other Postretirement Benefits	Dec. 31, 2024
Retirement Benefits [Abstract]
Pension and Other Postretirement Benefits	Pension and Other Postretirement Benefits We sponsor defined benefit pension plans and defined contribution plans that cover substantially all employees in Canada, the Netherlands, Switzerland, the United Kingdom, the U.S., Belgium and certain employees in Germany. Certain defined benefit plans in the United Kingdom are frozen and additional benefits are not being earned by the participants. The U.S. defined benefit pension plan is closed to new entrants. Annual contributions to retirement plans equal or exceed the minimum funding requirements of applicable local regulations. The assets of the funded pension plans we sponsor are maintained in various trusts and are invested primarily in equity and fixed income securities. Benefits provided to employees under defined contribution plans include cash and stock contributions by the Company based on either hours worked by the employee or a percentage of the employee’s compensation. Defined contribution expense for 2024, 2023, and 2022 w as $14.4 million , $14.0 million, and $13.4 million, respectively. We sponsor unfunded postretirement medical and life insurance benefit plans for certain employees in Canada and the U.S. The medical benefit portion of the U.S. plan is only for employees who retired prior to 1989 as well as certain other employees who were near retirement and elected to receive certain benefits. The following tables provide a reconciliation of the changes in the plans’ benefit obligations and fair value of assets as well as a statement of the funded status and balance sheet reporting for these plans. Pension Benefits Other Benefits Years Ended December 31, 2024 2023 2024 2023 (In thousands) Change in benefit obligation: Benefit obligation, beginning of year $ (342,759) $ (317,424) $ (21,312) $ (19,944) Service cost (3,131) (2,632) (39) (11) Interest cost (14,759) (15,237) (949) (1,012) Participant contributions (424) (435) (3) (3) Actuarial gain (loss) 25,815 (16,231) (175) (1,179) Settlements 8,338 2,987 — — Plan amendments 104 — — — Foreign currency exchange rate changes 7,681 (12,427) 1,549 (492) Benefits paid 15,706 18,640 1,405 1,329 Benefit obligation, end of year $ (303,429) $ (342,759) $ (19,524) $ (21,312) Pension Benefits Other Benefits Years Ended December 31, 2024 2023 2024 2023 (In thousands) Change in plan assets: Fair value of plan assets, beginning of year $ 301,378 $ 281,332 $ — $ — Actual return on plan assets 641 21,141 — — Employer contributions 10,427 8,432 1,402 1,326 Plan participant contributions 424 435 3 3 Settlements (8,292) (2,987) — — Foreign currency exchange rate changes (5,696) 11,665 — — Benefits paid (15,706) (18,640) (1,405) (1,329) Fair value of plan assets, end of year $ 283,176 $ 301,378 $ — $ — Funded status, end of year $ (20,253) $ (41,381) $ (19,524) $ (21,312) Amounts recognized in the balance sheets: Prepaid benefit cost $ 27,842 $ 16,358 $ — $ — Accrued benefit liability, current (2,969) (3,051) (1,390) (1,427) Accrued benefit liability, noncurrent (45,126) (54,688) (18,134) (19,885) Net funded status $ (20,253) $ (41,381) $ (19,524) $ (21,312) The accumulated benefit obligation for all defined benefit pension plans was $320.6 million and $360.7 million at December 31, 2024 and 2023, respectively. The projected benefit obligation, accumulated benefit obligation, and fair value of plan assets for the pension plans with a projected benefit obligation in excess of plan assets were $142.1 million, $140.2 million, and $94.0 million, respectively, as of December 31, 2024 and $281.1 million, $278.4 million, and $224.0 million, respectively, as of December 31, 2023 . The accumulated benefit obligation and fair value of plan assets for other postretirement benefit plans with an accumulated benefit obligation in excess of plan assets were $19.5 million and $0.0 million, respectively, as of December 31, 2024 and were $21.3 million and $0.0 million, respectively, as of December 31, 2023. The following table provides the components of net periodic benefit costs for the plans. Pension Benefits Other Benefits Years Ended December 31, 2024 2023 2022 2024 2023 2022 (In thousands) Components of net periodic benefit cost: Service cost $ 3,131 $ 2,632 $ 3,491 $ 39 $ 11 $ 24 Interest cost 14,759 15,237 9,248 949 1,012 761 Expected return on plan assets (16,299) (16,512) (16,023) — — — Amortization of prior service cost 180 176 174 — — — Settlement loss (gain) 1,147 (101) 1,189 — — — Net loss (gain) recognition (110) (938) 734 (411) (737) (73) Net periodic benefit cost (income) $ 2,808 $ 494 $ (1,187) $ 577 $ 286 $ 712 We recorded settlement losses totaling $1.1 million and $1.2 million during 2024 and 2022, respectively. The settlement losses were the result of lump-sum payments to participants that exceeded the sum of the pension plan's respective annual service cost and interest cost amounts. The following table presents the assumptions used in determining the benefit obligations and the net periodic benefit cost amounts. Pension Benefits Other Benefits Years Ended December 31, Years Ended December 31, 2024 2023 2024 2023 Weighted average assumptions for benefit obligations at year end: Discount rate 5.1 % 4.5 % 4.7 % 4.7 % Salary increase 3.2 % 3.2 % N/A N/A Cash balance interest credit rate 4.4 % 4.4 % N/A N/A Weighted average assumptions for net periodic cost for the year: Discount rate 4.5 % 4.9 % 4.7 % 5.2 % Salary increase 3.2 % 3.2 % N/A N/A Cash balance interest credit rate 4.4 % 4.5 % N/A N/A Expected return on assets 5.2 % 5.2 % N/A N/A Assumed health care cost trend rates: Health care cost trend rate assumed for next year N/A N/A 5.1 % 5.2 % Rate that the cost trend rate gradually declines to N/A N/A 4.6 % 4.6 % Year that the rate reaches the rate it is assumed to remain at N/A N/A 2028 2028 During 2023, there was a ruling in the United Kingdom related to the validity of certain amendments to benefits in contracted-out salary-related defined benefit pension plans. In 2024, the ruling was upheld by the Court of Appeals in London. The ruling may potentially be applicable to certain defined benefit pension plans we have in the United Kingdom. While we do not believe the impact of this ruling will have a material impact to our financial statements, we may face increased projected benefit obligations, additional funding obligations and costs associated with the benefit correction process. We will continue to investigate whether any of our plans are impacted. As of December 31, 2024, no specific adjustments for this matter have been included in estimating our projected benefit obligation and related net periodic benefit costs. Plan assets are invested using a total return investment approach whereby a mix of equity securities and fixed income securities are used to preserve asset values, diversify risk, and achieve our target investment return benchmark. Investment strategies and asset allocations are based on consideration of the plan liabilities, the plan’s funded status, and our financial condition. Investment performance and asset allocation are measured and monitored on an ongoing basis. Plan assets are managed in a balanced portfolio comprised of two major components: an asset growth portion and an asset protection portion. The expected role of asset growth investments is to maximize the long-term real growth of assets, while the role of asset protection investments is to generate current income, provide for more stable periodic returns, and provide some protection against a permanent loss of capital. Absent regulatory or statutory limitations, the target asset allocation for the investment of the assets for our ongoing pension plans is 45-50% in asset protection investments and 50-55% in asset growth investments and for our pension plans where the majority of the participants are in payment or terminated vested status is 80-95% in asset protection investments and 5-20% in asset growth investments. Asset growth investments include a diversified mix of U.S. and international equity, primarily invested through investment funds. Asset protection investments include government securities and investment grade corporate bonds, primarily invested through investment funds and group insurance contracts. We develop our expected long-term rate of return assumptions based on the historical rates of returns for securities and instruments of the type in which our plans invest. The expected long-term rate of return on plan assets reflects the average rate of earnings expected on the invested assets and future assets to be invested to provide for the benefits included in the projected benefit obligation. We use historic plan asset returns combined with current market conditions to estimate the rate of return. The expected rate of return on plan assets is a long-term assumption based on an analysis of historical and forward looking returns considering the plan’s actual and target asset mix. The following table presents the fair values of the pension plan assets by asset category. December 31, 2024 December 31, 2023 Fair Market Value at December 31, 2024 Quoted Prices Significant Investments Measured at Net Asset Value Fair Market Value at December 31, 2023 Quoted Prices Significant Investments Measured at Net Asset Value (In thousands) (In thousands) Asset Category: Equity securities(a) U.S. equities fund $ 40,260 $ — $ — $ 40,260 $ 34,966 $ — $ — $ 34,966 Non-U.S. equities fund 37,321 — — 37,321 35,939 — — 35,939 Debt securities(b) Government bond fund 63,502 — — 63,502 77,480 — — 77,480 Corporate bond fund 62,950 — — 62,950 62,456 — — 62,456 Fixed income fund(c) 20,348 — — 20,348 22,673 — — 22,673 Liability driven investment fund(d) 43,354 — — 43,354 51,412 — — 51,412 Other investments(e) 7,382 — — 7,382 9,565 — — 9,565 Cash and equivalents 8,059 3,404 — 4,655 6,887 2,662 — 4,225 Total $ 283,176 $ 3,404 $ — $ 279,772 $ 301,378 $ 2,662 $ — $ 298,716 (a) This category includes investments in actively managed and indexed investment funds that invest in a diversified pool of equity securities of companies located in the U.S., Canada, Western Europe and other developed countries throughout the world. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund. Equity securities held in separate accounts are valued based on observable quoted prices on active exchanges. (b) This category includes investments in investment funds that invest in U.S. treasuries; other national, state and local government bonds; and corporate bonds of highly rated companies from diversified industries. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund. (c) This category includes guaranteed insurance contracts and annuity policies. (d) This category includes investments in funds that are designed to provide leveraged exposure to changes in interest rates. The fund purchases shares of funds that invest in government bonds, debt repurchase agreements, total return swaps and interest rate swaps. (e) This category includes investments in hedge funds that pursue multiple strategies in order to provide diversification and balance risk/return objectives, real estate funds, and private equity funds. The plans do not invest in individual securities. All investments are through well diversified investment funds. As a result, there are no significant concentrations of risk within the plan assets. The following table reflects the benefits as of December 31, 2024 expected to be paid in each of the next five years and in the aggregate for the five years thereafter from our pension and other postretirement plans. Because our other postretirement plans are unfunded, the anticipated benefits with respect to these plans will come from our own assets. Because our pension plans are primarily funded plans, the anticipated benefits with respect to these plans will come primarily from the trusts established for these plans. Pension Other (In thousands) 2025 $ 20,449 $ 1,424 2026 20,417 1,409 2027 20,756 1,401 2028 23,151 1,405 2029 22,820 1,397 2029-2033 103,486 6,892 Total $ 211,079 $ 13,928 We anticipate contributing $7.6 million and $1.4 million to our pension and other postretirement plans, respectively, during 2025. The pre-tax amounts in accumulated other comprehensive loss that have not yet been recognized as components of net periodic benefit cost at December 31, 2024 and the changes in these amounts during the year ended December 31, 2024 are as follows. Pension Other (In thousands) Components of accumulated other comprehensive loss: Net actuarial loss (gain) $ 13,120 $ (4,398) Net prior service cost 1,831 — $ 14,951 $ (4,398) Pension Other (In thousands) Changes in accumulated other comprehensive loss: Net actuarial loss (gain), beginning of year $ 24,298 $ (5,322) Amortization of actuarial gain 110 411 Actuarial loss (gain) (25,815) 175 Asset loss 15,658 — Settlement loss recognized (1,147) — Currency impact 16 338 Net actuarial loss (gain), end of year $ 13,120 $ (4,398) Prior service cost, beginning of year $ 2,148 $ — Amortization of prior service cost (180) — Prior service credit occurring during the year (104) — Currency impact (33) — Prior service cost, end of year $ 1,831 $ —

Comprehensive Income and Accumu

Comprehensive Income and Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Comprehensive Income and Accumulated Other Comprehensive Income (Loss)	Comprehensive Income and Accumulated Other Comprehensive Income (Loss) The accumulated balances related to each component of other comprehensive income (loss), net of tax, are as follows: Foreign Currency Pension and Other Accumulated Other Comprehensive Income (Loss) (In thousands) Balance at December 31, 2022 $ (1,944) $ (3,927) $ (5,871) Other comprehensive loss attributable to Belden before reclassifications (24,431) (9,696) (34,127) Amounts reclassified from accumulated other comprehensive income (139) (1,142) (1,281) Net current period other comprehensive loss attributable to Belden (24,570) (10,838) (35,408) Balance at December 31, 2023 $ (26,514) $ (14,765) $ (41,279) Other comprehensive income attributable to Belden before reclassifications 29,643 8,364 38,007 Amounts reclassified from accumulated other comprehensive income — (260) (260) Net current period other comprehensive income attributable to Belden 29,643 8,104 37,747 Balance at December 31, 2024 $ 3,129 $ (6,661) $ (3,532) As of December 31, 2024 and 2023, the tax balances included in accumulated other comprehensive income (loss) in the table above are not material. The following table summarizes the effects of reclassifications from accumulated other comprehensive income (loss): Amount Reclassified from Affected Line Item in the (In thousands) Amortization of pension and other postretirement benefit plan items: Actuarial gains $ (521) (1) Prior service cost 180 (1) Total before tax (341) Tax expense 81 Total net of tax $ (260) (1) The amortization of these accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit costs (see Note 19).

Share-Based Compensation

Share-Based Compensation	12 Months Ended
Share-Based Compensation	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Share-Based Compensation	Share-Based Compensation Compensation cost included in income from continuing operations, primarily selling, general and administrative expense, and the income tax benefit recognized for our share-based compensation arrangements is included below: Years Ended December 31, 2024 2023 2022 (In thousands) Total share-based compensation cost $ 27,532 $ 21,024 $ 23,454 Income tax benefit 6,553 5,004 5,582 We currently have outstanding stock appreciation rights (SARs), restricted stock units with service vesting conditions, restricted stock units with performance vesting conditions, and restricted stock units with market conditions. We grant SARs with an exercise price equal to the closing market price of our common stock on the grant date. Generally, SARs may be converted into shares of our common stock in equal amounts on each of the first three anniversaries of the grant date and expire 10 years from the grant date. We did not grant any SARs in 2024. Certain awards provide for accelerated vesting in certain circumstances, including following a change in control of the Company. Restricted stock units with service conditions generally vest 3-5 years from the grant date. Restricted stock units issued based on the attainment of the performance conditions generally vest on the second or third anniversary of their grant date. Restricted stock units issued based on the attainment of market conditions generally vest on the third anniversary of their grant date. We recognize compensation cost for all awards based on their fair values. The fair values for SARs are estimated on the grant date using the Black-Scholes-Merton option-pricing formula. Expected volatility is based on historical volatility, and expected term is based on historical exercise patterns of SAR holders. The fair value of restricted stock units with service vesting conditions or performance vesting conditions is the closing market price of our common stock on the date of grant. We estimate the fair value of certain restricted stock units with market conditions using a Monte Carlo simulation valuation model with the assistance of a third party valuation firm. Compensation costs for awards with service conditions are amortized to expense using the straight-line method. Compensation costs for awards with performance conditions and graded vesting are amortized to expense using the graded attribution method. The following table presents the assumptions used for equity awards. Years Ended December 31, 2024 2023 2022 (In thousands, except weighted average fair Weighted-average fair value of SARs granted n/a $ 39.44 $ 21.85 Total intrinsic value of SARs exercised 5,696 12,229 4,384 Tax expense (benefit) from SARs exercised (420) 660 678 Weighted-average fair value of restricted stock units granted 89.98 95.32 61.61 Total fair value of restricted stock units vested 14,031 19,821 16,830 Expected volatility 38.88 % 43.45 % 43.00 % Expected term (in years) 2.9 5.7 5.6 Risk-free rate 4.40 % 4.26 % 1.89 % Dividend yield 0.25 % 0.23 % 0.37 % Stock Appreciation Rights Restricted Stock Units Number Weighted- Weighted- Aggregate Number Weighted- (In thousands, except exercise prices, fair values, and contractual terms) Outstanding at January 1, 2024 413 $ 64.97 6.6 $ 6,220 699 $ 71.95 Granted — — 467 89.98 Exercised or converted (143) 61.94 (254) 55.18 Forfeited or expired (7) 77.60 (21) 76.74 Outstanding at December 31, 2024 263 $ 66.29 6.5 $ 12,199 891 $ 83.35 Exercisable or convertible at December 31, 2024 167 $ 60.66 5.7 $ 8,696 At December 31, 2024, the total unrecognized compensation cost related to all nonvested awards was $32.9 million. That cost is expected to be recognized over a weighted-average period of 1.9 years. Historically, we have issued treasury shares, if available, to satisfy award c onversions and exercises.

Share Repurchases

Share Repurchases	12 Months Ended
Share Repurchases	Dec. 31, 2024
Equity [Abstract]
Share Repurchases	Share Repurchases We have a share repurchase program which allows us to purchase our common stock through open market repurchases, negotiated transactions, or other means, in accordance with applicable securities laws and other restrictions. This program is funded with cash on hand and cash flows from operating activities. During 2024, our Board of Directors increased the authorizations under this program by $300.0 million.

Market Concentrations and Risks

Market Concentrations and Risks	12 Months Ended
Market Concentrations and Risks	Dec. 31, 2024
Risks and Uncertainties [Abstract]
Market Concentrations and Risks	Market Concentrations and Risks Concentrations of Credit We sell our products to many customers in several markets across multiple geographic areas. The ten largest customers, of which eight are distributors, constitute in aggregate approx imately 46%, 44%, and 45% of r evenues in 2024, 2023, and 2022, respectively. Unconditional Commodity Purchase Obligations At December 31, 2024, we were committed to purchase approximately 3.5 million pounds of copper at an aggregate fixed cost of $15.0 million. At December 31, 2024, this fixed cost was $1.1 million greater than the market cost that would be incurred on a spot purchase of the same amount of copper. The aggregate market cost was based on the current market price of copper obtained from the New York Mercantile Exchange. Labor Approximately 26% of our labor force is covered by collective bargaining agreements at various locations around the world, and we expect to renegotiate these agreements during 2025. Fair Value of Financial Instruments

Contingent Liabilities

Contingent Liabilities	12 Months Ended
Contingent Liabilities	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities	Contingent Liabilities General Various claims are asserted against us in the ordinary course of business including those pertaining to income tax examinations, product liability, customer, employment, vendor, and patent matters. Based on facts currently available, management believes that the disposition of the claims that are pending or asserted will not have a materially adverse effect on our financial position, operating results, or cash flow. Letters of Credit, Guarantees and Bonds At December 31, 2024, we were party to unused standby letters of credit, bank guarantees, and surety bonds totaling $9.4 million, $6.4 million, and $6.2 million, respectively. These commitments are generally issued to secure obligations we have for a variety of commercial reasons, such as workers compensation self-insurance programs in several states and the importation and exportation of product.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	12 Months Ended
Supplemental Cash Flow Information	Dec. 31, 2024
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information Supplemental cash flow information is as follows: Years Ended December 31, 2024 2023 2022 (In thousands) Income tax refunds received $ 25,785 $ 6,680 $ 16,480 Income taxes paid (71,133) (62,367) (71,255) Interest paid (42,402) (42,105) (45,168)

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
Schedule II - Valuation and Qualifying Accounts	Dec. 31, 2024
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	Schedule II – Valuation and Qualifying Accounts Beginning Charged to Divestitures/ Charge Recoveries Currency Ending (In thousands) Accounts Receivable — Allowance for Doubtful Accounts: 2024 $ 23,114 $ 3,198 $ — $ (167) $ (677) $ (211) $ 25,257 2023 7,954 16,167 — (154) (861) 8 23,114 2022 4,864 6,934 — (3,648) (121) (75) 7,954 Inventories — Excess and Obsolete Allowances: 2024 $ 67,868 $ 19,896 $ 313 $ (12,120) $ (3,976) $ (871) 71,110 2023 45,913 28,018 3,844 (8,220) (1,900) 213 67,868 2022 45,663 8,349 813 (4,116) (4,102) (694) 45,913 Deferred Income Tax Asset — Valuation Allowance: 2024 $ 109,676 $ 983 $ 1,303 $ — $ (3,546) $ (352) $ 108,064 2023 142,330 2,360 389 (35,085) (549) 231 109,676 2022 66,960 12,861 73,432 — (10,333) (590) 142,330

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 198,433	$ 242,759	$ 254,663

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended	12 Months Ended
Insider Trading Arrangements	Dec. 31, 2024 shares	Dec. 31, 2024 shares
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		Name Title Action Date Expiration Date Total Total Shares Ashish Chand (1) President and Chief Executive Officer Adoption 11/01/2024 3/31/2025 16,979 14,535 Brian Lieser (2) Executive Vice President, Automation Solutions Adoption 11/07/2024 11/28/2025 5,901 22,364 Leah Tate (3) Senior Vice President, Human Resources Adoption 11/08/2024 12/31/2025 2,108 2,400 (1) Ashish Chand, President and Chief Executive Officer, entered into a pre-arranged stock trading plan pursuant to Rule 10b5-1 on November 1, 2024. Mr. Chand's plan provides for the exercise of up to 16,979 stock appreciation rights and the sale of up to 14,535 shares of Belden common stock. The plan expires on March 31, 2025, or upon the earlier completion of all authorized transactions under the plan. (2) Brian Lieser, Executive Vice President, Automation Solutions, entered into a pre-arranged stock trading plan pursuant to Rule 10b5-1 on November 7, 2024. Mr. Lieser's plan provides for the exercise of up to 5,901 stock appreciation rights and the sale of up to 22,364 shares of Belden common stock. The plan expires on November 28, 2025, or upon the earlier completion of all authorized transactions under the plan. (3) Leah Tate, Senior Vice President, Human Resources, entered into a pre-arranged stock trading plan pursuant to Rule 10b5-1 on November 8, 2024. Mrs. Tate's plan provides for the exercise of up to 2,108 stock appreciation rights and the sale of up to 2,400 shares of Belden common stock. The plan expires on December 31, 2025, or upon the earlier completion of all authorized transactions under the plan.
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Ashish Chand [Member]
Trading Arrangements, by Individual
Name	Ashish Chand
Title	President and Chief Executive Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	11/01/2024
Expiration Date	3/31/2025
Arrangement Duration	150 days
Aggregate Available	14,535	14,535
Brian Lieser [Member]
Trading Arrangements, by Individual
Name	Brian Lieser
Title	Executive Vice President, Automation Solutions
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	11/07/2024
Expiration Date	11/28/2025
Arrangement Duration	386 days
Aggregate Available	22,364	22,364
Leah Tate [Member]
Trading Arrangements, by Individual
Name	Leah Tate
Title	Senior Vice President, Human Resources
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	11/08/2024
Expiration Date	12/31/2025
Arrangement Duration	418 days
Aggregate Available	2,400	2,400

Insider Trading Policies and Pr

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Dec. 31, 2024
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Cybersecurity Risk Management a

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Cybersecurity Risk Management and Strategy Disclosure	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	Cybersecurity Risk Management and Strategy Cybersecurity risk oversight and management is a top priority for the Company and the Board of Directors. The Company offers a broad portfolio of cybersecurity solutions to its customers, and an understanding of cybersecurity risks is critical to both the Company internally and to our customers and business partners. The Company identifies, assesses, and manages cybersecurity risk as part of both the enterprise cybersecurity program and the enterprise risk management program. The Company’s expertise, dedicated resources and proven technology in cybersecurity management are evident in the Company’s enterprise cybersecurity program. The Company’s Cybersecurity Committee (described below) is a subcommittee of and reports to the Audit Committee, which oversees the enterprise risk management program. The Company has adopted processes and procedures for incident detection, containment and response, which are provided through a variety of resources, including: • 24/7 Security Operations Center, • advanced endpoint detection and response, • user behavior analytics, • vulnerability identification and patching, • email threat prevention, • data loss prevention, • identity and privileged access management, and • ongoing phishing training and testing. To ensure the Company is addressing constant changes in the threat landscape, management and the Board of Directors continue to advance their cybersecurity knowledge and stay current with evolving information, regulations and industry practices through our memberships and affiliations with industry leading companies such as Crowdstrike, IBM, and Palo Alto Networks, as well as national organizations such as the Federal Bureau of Investigation, the Cybersecurity and Infrastructure Security Agency and others. In addition, to supplement our efforts, expert consultants and third-party vendors are engaged from time to time to assess enterprise security posture, identify operational technology vulnerabilities, and assess software product security. In addition to these assessments, the Company engages third-party vendors to perform enterprise-wide attack and penetration tests. Findings from these activities are reported to senior management and the Belden Board of Directors. The Company recognizes the importance of identifying and managing material cybersecurity risks associated with our use of third-party service providers. To address these third-party risks, the Company has developed a program to assess both new and existing vendors and suppliers that are expected to have access to or otherwise influence Belden’s internal network or internal data. Components of this program include customed vendor security assessments, security architecture review, and third-party rating services. We perform cybersecurity due diligence through this program as appropriate in connection with the on-boarding of a third-party relationship and conduct periodic reviews based on the inherent risk profile of the particular provider. Impact of Cybersecurity Risks on Strategy and Results Risks from cybersecurity threats, including as a result of any previous cybersecurity incidents, have not materially affected, and the Company believes that they are not reasonably likely to materially affect, the Company, including its business strategy, results of operations or financial condition. The Company determined the impact of a past incident was not material, but enhanced its cybersecurity controls and processes in response to the incident. The Company has taken reasonable measures to protect against future compromise, and believes these measures will protect against material adverse impact, including its business strategy, results of operations or financial condition.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	Cybersecurity risk oversight and management is a top priority for the Company and the Board of Directors. The Company offers a broad portfolio of cybersecurity solutions to its customers, and an understanding of cybersecurity risks is critical to both the Company internally and to our customers and business partners. The Company identifies, assesses, and manages cybersecurity risk as part of both the enterprise cybersecurity program and the enterprise risk management program. The Company’s expertise, dedicated resources and proven technology in cybersecurity management are evident in the Company’s enterprise cybersecurity program. The Company’s Cybersecurity Committee (described below) is a subcommittee of and reports to the Audit Committee, which oversees the enterprise risk management program.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	In 2018, in recognition of the unique nature of cybersecurity threats and the desire to apply focused oversight of cybersecurity risk, the Company’s Board of Directors formed a Cybersecurity Subcommittee (the “Subcommittee”) providing oversight of the Company’s cybersecurity posture and reporting to the Board’s Audit Committee. The Subcommittee consists of three independent directors with experience and/or expertise in cybersecurity management and oversight. The Subcommittee meets regularly on at least a quarterly basis. The Subcommittee has full access to management and consultants engaged by management and receives regular reporting directly from the Company’s chief information officer, head of cybersecurity, internal audit and the legal function, as well as third-party assessments of the Company’s cybersecurity processes and posture. In addition, the full Board of Directors receives a report on cybersecurity annually, or as necessary.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	In 2018, in recognition of the unique nature of cybersecurity threats and the desire to apply focused oversight of cybersecurity risk, the Company’s Board of Directors formed a Cybersecurity Subcommittee (the “Subcommittee”) providing oversight of the Company’s cybersecurity posture and reporting to the Board’s Audit Committee. The Subcommittee consists of three independent directors with experience and/or expertise in cybersecurity management and oversight. The Subcommittee meets regularly on at least a quarterly basis. The Subcommittee has full access to management and consultants engaged by management and receives regular reporting directly from the Company’s chief information officer, head of cybersecurity, internal audit and the legal function, as well as third-party assessments of the Company’s cybersecurity processes and posture. In addition, the full Board of Directors receives a report on cybersecurity annually, or as necessary.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Company’s vice president of cybersecurity and chief information officer jointly provide periodic reports to the Subcommittee, the Company’s CEO and CFO, and other members of management. These reports include updates on the Company’s cybersecurity risks and threats, the status of projects to strengthen its information security systems, assessments of the information security program, and the emerging threat landscape. The Company’s program is regularly evaluated internally and externally and updates are presented to senior management and the Subcommittee.
Cybersecurity Risk Role of Management [Text Block]	The Subcommittee consists of three independent directors with experience and/or expertise in cybersecurity management and oversight. The Subcommittee meets regularly on at least a quarterly basis. The Subcommittee has full access to management and consultants engaged by management and receives regular reporting directly from the Company’s chief information officer, head of cybersecurity, internal audit and the legal function, as well as third-party assessments of the Company’s cybersecurity processes and posture. In addition, the full Board of Directors receives a report on cybersecurity annually, or as necessary. The Company’s cybersecurity program is managed by a dedicated vice president of cybersecurity, who reports directly to Belden’s chief information officer and whose team is responsible for leading enterprise-wide cybersecurity strategy, policy, standards, architecture, and processes. The chief information officer reports directly to the Company’s chief financial officer and has access to other members of senior management, including Belden’s chief executive officer, as appropriate. Belden’s vice president of cybersecurity has over 30 years of IT experience, including twelve years of cybersecurity experience. Belden’s chief information officer has over 35 years of IT experience, a BS in Computer Science and an MBA. The Company’s policies and procedures described above are designed to ensure that the Company’s vice president of cybersecurity and chief information officer and other necessary members of any cybersecurity response team are appropriately informed of any cybersecurity matters and the status of our ongoing processes. The Company’s vice president of cybersecurity and chief information officer jointly provide periodic reports to the Subcommittee, the Company’s CEO and CFO, and other members of management. These reports include updates on the Company’s cybersecurity risks and threats, the status of projects to strengthen its information security systems, assessments of the information security program, and the emerging threat landscape. The Company’s program is regularly evaluated internally and externally and updates are presented to senior management and the Subcommittee. The Company also actively engages with key vendors, industry participants, and knowledge leaders as part of the Company’s continuing efforts to evaluate and enhance the effectiveness of its information security policies and procedures.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	The Company’s cybersecurity program is managed by a dedicated vice president of cybersecurity, who reports directly to Belden’s chief information officer and whose team is responsible for leading enterprise-wide cybersecurity strategy, policy, standards, architecture, and processes. The chief information officer reports directly to the Company’s chief financial officer and has access to other members of senior management, including Belden’s chief executive officer, as appropriate. Belden’s vice president of cybersecurity has over 30 years of IT experience, including twelve years of cybersecurity experience. Belden’s chief information officer has over 35 years of IT experience, a BS in Computer Science and an MBA.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Belden’s vice president of cybersecurity has over 30 years of IT experience, including twelve years of cybersecurity experience. Belden’s chief information officer has over 35 years of IT experience, a BS in Computer Science and an MBA.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	The Company’s vice president of cybersecurity and chief information officer jointly provide periodic reports to the Subcommittee, the Company’s CEO and CFO, and other members of management. These reports include updates on the Company’s cybersecurity risks and threats, the status of projects to strengthen its information security systems, assessments of the information security program, and the emerging threat landscape. The Company’s program is regularly evaluated internally and externally and updates are presented to senior management and the Subcommittee.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2024
Accounting Policies [Abstract]
Business Description	Business Description Belden Inc. (the Company, us, we, or our) is a leading global supplier of complete connection solutions built around two global businesses - Smart Infrastructure Solutions and Automation Solutions .
Consolidation	Consolida tion The accompanying Consolidated Financial Statements include Belden Inc. and all of its subsidiaries. We eliminate all significant affiliate accounts and transactions in consolidation.
Foreign Currency	Foreign Currency For international operations with functional currencies other than the United States (U.S.) dollar, we translate assets and liabilities at current exchange rates; we translate income and expenses using average exchange rates. We report the resulting translation adjustments, as well as gains and losses from certain affiliate transactions, in accumulated other comprehensive income (loss), a separate component of stockholders’ equity. We include exchange gains and losses on transactions in operating income. We determine the functional currency of our foreign subsidiaries based upon the currency of the primary economic environment in which each subsidiary operates. Typically, that is determined by the currency in which the subsidiary primarily generates and expends cash. We have concluded that the local currency is the functional currency for all of our material subsidiaries.
Reporting Periods	Reporting Periods Our fiscal year and fiscal fourth quarter both end on December 31. Our fiscal first quarter ends on the Sunday falling closest to 91 days after December 31. Our fiscal second and third quarters each have 91 days.
Use of Estimates in the Preparation of the Financial Statements	Use of Estimates in the Preparation of the Financial Statements The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, and operating results and the disclosure of contingencies. Actual results could differ from those estimates. We make significant estimates with respect to revenue related to variable consideration, the collectability and valuation of receivables, the valuation of inventory, the realization of deferred tax assets, the valuation of goodwill and indefinite-lived intangible assets, the valuation of contingent liabilities, the calculation of share-based compensation, the calculation of pension and other postretirement benefits expense, and the valuation of acquired businesses.
Fair Value Measurement	Fair Value Measurement Accounting guidance for fair value measurements specifies a hierarchy of valuation techniques based upon whether the inputs to those valuation techniques reflect assumptions other market participants would use based upon market data obtained from independent sources or reflect our own assumptions of market participant valuation. The hierarchy is broken down into three levels based on the reliability of the inputs as follows: • Level 1 – Quoted prices in active markets that are unadjusted and accessible at the measurement date for identical, unrestricted assets or liabilities; • Level 2 – Quoted prices for identical assets and liabilities in markets that are not active, quoted prices for similar assets and liabilities in active markets, or financial instruments for which significant inputs are observable, either directly or indirectly; and • Level 3 – Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.
Cash and Cash Equivalents	Cash and Cash Equivalents We classify cash on hand and deposits in banks, including commercial paper, money market accounts, and other investments with an original maturity of three months or less, that we hold from time to time, as cash and cash equivalents. We periodically have cash equivalents consisting of short-term money market funds and other investments. As of December 31, 2024 and 2023, we did not have any such cash equivalents on hand. The primary objective of our investment activities is to preserve our capital for the purpose of funding operations. We do not enter into investments for trading or speculative purposes.
Accounts Receivable and Revenue Reserves	Accounts Receivable and Revenue Reserves We classify amounts owed to us and due within twelve months, arising from the sale of goods or services and from other business activities, as current receivables. We classify receivables due after twelve months as other long-lived assets. At the time of sale, we establish an estimated reserve for trade, promotion, and other special price reductions such as contract pricing, discounts to meet competitor pricing, and on-time payment discounts. We also adjust receivable balances for, among other things, correction of billing errors, incorrect shipments, and settlement of customer disputes. Customers are allowed to return inventory if and when certain conditions regarding the physical state of the inventory and our approval of the return are met. Certain distribution customers are allowed to return inventory at original cost, in an amount not to exceed three percent of the prior year’s purchases, in exchange for an order of equal or greater value. Until we can process these reductions, corrections, and returns (together, the Changes) through individual customer records, we estimate the amount of outstanding Changes and recognize them by reducing revenues. We base these estimates on historical and anticipated sales demand, trends in product pricing, and historical and anticipated Changes patterns. We make revisions to these estimates in the period in which the facts that give rise to ea ch revision become known. Future market conditions might require us to take actions to further reduce prices and increase customer return authorizations. Unprocessed Changes recognized against our gross accounts receivable, such as price reductions, at December 31, 2024 and 2023 totaled $29.1 million and $26.0 million, respectively. Unprocessed Changes recognized as accrued liabilities, such as product returns, at December 31, 2024 and 2023 totaled $16.0 million and $15.6 million, respectively.
Inventories and Related Reserves	Inventories and Related Reserves Inventories are stated at the lower of cost or net realizable value. We determine the cost of all raw materials, work-in-process, and finished goods inventories by the first in, first out method. Cost components of inventories include direct labor, applicable production overhead, and amounts paid to suppliers of materials and products as well as freight costs and, when applicable, duty costs to import the materials and products.
Property, Plant and Equipment	Property, Plant and Equipment We record property, plant and equipment at cost. We calculate depreciation on a straight-line basis over the estimated useful lives of the related assets ranging from 10 to 40 years for buildings, 5 to 12 years for machinery and equipment, and 5 to 10 years for computer equipment and software. Construction in process reflects amounts incurred for property, plant and equipment not yet placed into service. We charge maintenance and repairs—both planned major activities and less-costly, ongoing activities—to expense as incurred. We capitalize interest costs associated with the construction of capital assets and amortize the costs over the assets’ useful lives. Depreciation expense is included in costs of sales; selling, general and administrative expenses; and research and development expenses in the Consolidated Statements of Operations based on the specific categorization and use of the underlying assets being depreciated. We review property, plant and equipment to determine whether an event or change in circumstances indicates the carrying values of the assets may not be recoverable. We base our evaluation on the nature of the assets, the future economic benefit of the assets, and any historical or future profitability measurements, as well as other external market conditions or factors that may be present. If such impairment indicators are present or other factors exist that indicate that the carrying amount of an asset may not be recoverable, we determine whether impairment has occurred through the use of an undiscounted cash flow analysis. If impairment has occurred, we recognize a loss for the difference between the carrying amount and the fair value of the asset. For purposes of impairment testing of long-lived assets, we have identified asset groups at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. Generally, our asset groups are based on an individual plant or operating facility level. In some circumstances, however, a combination of plants or operating facilities may be considered the asset group due to interdependence of operational activities and cash flows.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Our intangible assets consist of (a) definite-lived assets subject to amortization such as developed technology, customer relationships, in-service research and development, trademarks, backlog, and capitalized software development intangible assets, and (b) indefinite-lived assets not subject to amortization such as goodwill. We record amortization of the definite-lived intangible assets over the estimated useful lives of the related assets, which generally range from one year or less for trademarks to more than 20 years for certain of our customer relationships. We determine the amortization method for our definite-lived intangible assets based on the pattern in which the economic benefits of the intangible asset are consumed. In the event we cannot reliably determine that pattern, we utilize a straight-line amortization method. We test our goodwill for impairment on an annual basis as of our fiscal November month-end or when indicators of impairment exist. We base our estimates on assumptions we believe to be reasonable, but which are not predictable with precision and therefore are inherently uncertain. Actual future results could differ from these estimates. The accounting guidance related to goodwill impairment testing allows for the performance of an optional qualitative assessment of whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. Such an evaluation is made based on the weight of all available evidence and the significance of all identified events and circumstances that may influence the fair value of a rep orting unit. If it is more likely than not that the fair value is less than the carrying value, then a quantitative assessment is required for the reporting unit, as described in the paragraph below. In 2024, we performed a qualitative assessment over all six of our reporting units. During 2024, 2023 and 2022, we did not recognize any goodwill impairment.
Pension and Other Postretirement Benefits	Pension and Other Postretirement Benefits Our pension and other postretirement benefit costs and obligations are dependent on the various actuarial assumptions used in calculating such amounts. These assumptions relate to discount rates, salary growth, long-term return on plan assets, health care cost trend rates, mortality tables, and other factors. We base the discount rate assumptions on current investment yields on high-quality corporate long-term bonds. The salary growth assumptions reflect our long-term actual experience and future or near-term outlook. We determine the long-term return on plan assets based on historical portfolio results and management’s expectation of the future economic environment. Our health care cost trend assumptions are developed based on historical cost data, the near-term outlook, and an assessment of likely long-term trends. Actual results that differ from our assumptions are accumulated and, if in excess of the lesser of 10% of the projected benefit obligation or the fair market value of plan assets, are amortized over the estimated future working life of the plan participants.
Accrued Sales Rebates and Revenue Recognition	Accrued Sales Rebates We grant incentive rebates to participating customers as part of our sales programs. The rebates are determined based on certain targeted sales volumes. Rebates are paid quarterly or annually in either cash or receivables credits. Until we can process these rebates through individual customer records, we estimate the amount of outstanding rebates and recognize them as accrued liabilities and reductions in our gross revenues. We base our estimates on both historical and anticipated sales demand and rebate program participation. We charge revisions to these estimates back to accrued liabilities and revenues in the period in which the facts that give rise to each revision become known. Future market conditions and product transitions might require us to take actions to increase sales rebates offered, possibly resulting in an incremental increase in accrued liabilities and an i Revenue Recognition
Contingent Liabilities	Contingent Liabilities We have established liabilities for environmental and legal contingencies that are probable of occurrence and reasonably estimable, the amounts of which are currently not material. A significant amount of judgment and use of estimates is required to quantify our ultimate exposure in these matters. We review the valuation of these liabilities on a quarterly basis, and we adjust the balances to account for changes in circumstances for ongoing and emerging issues. We accrue environmental remediation costs based on estimates of known environmental remediation exposures developed in consultation with our environmental consultants and legal counsel, the amounts of which are not currently material. We expense environmental compliance costs, which include maintenance and operating costs with respect to ongoing monitoring programs, as incurred. We evaluate the range of potential costs to remediate environmental sites. The ultimate cost of site clean-up is difficult to predict given the uncertainties of our involvement in certain sites, uncertainties regarding the extent of the required clean-up, the availability of alternative clean-up methods, variations in the interpretation of applicable laws and regulations, the possibility of insurance recoveries with respect to certain sites, and other factors. We are, from time to time, subject to routine litigation incidental to our business. These lawsuits primarily involve claims for damages arising out of the use of our products, allegations of patent or trademark infringement, and litigation and administrative proceedings involving employment matters and commercial disputes. Assessments regarding the ultimate cost of lawsuits require judgments concerning matters such as the anticipated outcome of negotiations, the number and cost of pending and future claims, and the impact of evidentiary requirements. Based on facts currently available, we believe the disposition of the claims that are pending or asserted will not have a materially adverse effect on our financial position, results of operations or cash flow.
Acquisition Accounting	Acquisition Accounting We allocate the consideration of an acquired business to its identifiable assets and liabilities based on estimated fair values. The excess of the consideration over the amount allocated to the assets and liabilities, if any, is recorded to goodwill. We use all available information to estimate fair values. We typically engage third party valuation specialists to assist in the fair value determination of inventories, tangible long-lived assets, and intangible assets other than goodwill. The carrying values of acquired receivables and accounts payable have historically approximated their fair values as of the acquisition date. As necessary, we may engage third party specialists to assist in the estimation of fair value for certain liabilities, such as postretirement benefit liabilities. We adjust the preliminary acquisition accounting, as necessary, typically up to one year after the acquisition closing date as we obtain more information regarding asset valuations and liabilities assumed.
Cost of Sales and Shipping and Handling Costs	Cost of Sales Cost of sales includes our total cost of inventory sold during the period, including material, labor, production overhead costs, variable manufacturing costs, and fixed manufacturing costs. Production overhead costs include operating supplies, applicable utility expenses, maintenance costs, and scrap. Variable manufacturing costs include inbound, interplant, and outbound freight, inventory shrinkage, and charges for excess and obsolete inventory. Fixed manufacturing costs include the costs associated with our purchasing, receiving, inspection, warehousing, distribution centers, production and inventory control, and manufacturing management. Cost of sales also includes the costs to provide maintenance and support and other professional services. Shipping and Handling Costs We recognize fees earned on the shipment of product to customers as revenues and recognize costs incurred on the shipment of product to customers as a cost of sales.
Selling, General and Administrative Expenses	Selling, General and Administrative Expenses Selling, general and administrative expenses include expenses not directly related to the production of inventory. They include all expenses related to selling and marketing our products, as well as the salary and benefit costs of associates performing the selling and marketing functions. Selling, general and administrative expenses also include salary and benefit costs, purchased services, and other costs related to our executive and administrative functions.
Research and Development Costs	Research and Development Costs Research and development costs are expensed as incurred.
Advertising Costs	Advertising Costs
Share-Based Compensation	Share-Based Compensation We compensate certain employees and non-employee directors with various forms of share-based payment awards and recognize compensation costs for these awards based on their fair values. We estimate the fair values of certain awards, primarily stock appreciation rights (SARs), on the grant date using the Black-Scholes-Merton option-pricing formula, which incorporates certain assumptions regarding the expected term of an award and expected stock price volatility. We develop the expected term assumption based on the vesting period and contractual term of an award, our historical exercise and cancellation experience, our stock price history, plan provisions that require exercise or cancellation of awards after employees terminate, and the extent to which currently available information indicates that the future is reasonably expected to differ from past experience. We develop the expected volatility assumption based on historical price data for our common stock. We estimate the fair value of certain restricted stock units with service vesting conditions and performance vesting conditions based on the grant date stock price. We estimate the fair value of certain restricted stock units with market conditions using a Monte Carlo simulation valuation model with the assistance of a third party valuation firm. After calculating the aggregate fair value of an award, we use an estimated forfeiture rate to discount the amount of share-based compensation cost expected to be recognized in our operating results over the service period of the award. We develop the forfeiture assumption based on our historical pre-vesting cancellation experience.
Income Taxes	Income Taxes Income taxes are provided based on earnings reported for financial statement purposes. The provision for income taxes differs from the amounts currently payable to taxing authorities due to the temporary or permanent timing differences with respect to the recognition of revenues, expenses, and tax attributes for income tax purposes compared to financial statement purposes. Income taxes are provided as if operations in all countries, including the U.S., were stand-alone businesses filing separate tax returns. Deferred income taxes are recognized by applying enacted statutory tax rates applicable to future years to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases as well as net operating loss and tax credit carryforwards. Deferred tax assets generally represent future tax benefits to be received when these carryforwards can be applied against future taxable income or when expenses previously reported in our Consolidated Financial Statements become deductible for income tax purposes. A deferred tax asset valuation allowance is required when some portion or all of the deferred tax assets is not more likely than not to be realized. At December 31, 2024, the valuation allowance of $108.1 million was primarily related to net operating losses and capital losses that we do not currently expect to realize. Our effective tax rate is based on expected income, statutory tax rates, and tax planning opportunities available to us in the various jurisdictions in which we operate. Significant judgment is required in determining our effective tax rate and in evaluating our tax positions. We establish accruals for uncertain tax positions when we believe that the full amount of the associated tax benefit may not be realized. To the extent we were to prevail in matters for which accruals have been established or would be required to pay amounts in excess of reserves, there could be a material effect on our income tax provisions in the period in which such determination is made.
Recently Adopted Securities and Exchange Commission Rules and Current-Year Adoption of Accounting Pronouncements and Pending Adoption of Recent Accounting Pronouncements	Recently Adopted Securities and Exchange Commission Rules The Inflation Reduction Act of 2022 imposed a 1% excise tax on the repurchase of more than $1 million of stock by publicly traded US corporations. The excise tax equals 1% of the fair market value of the stock repurchased during the tax year, reduced by the fair market value of stock issued during the tax year, including stock issued to employees of the corporation. The excise tax applies to repurchases of stock made after December 31, 2022. The amount of excise tax accrued during the years ended December 31, 2024 and 2023 was immaterial to our consolidated financial statements. Current-Year Adoption of Accounting Pronouncements The Financial Accounting Standards Board (FASB) amended the guidance in Accounting Standards Codification (ASC) 280, Segment Reporting , to require public companies disclose significant segment expenses and other segment items on an annual and interim basis and to provide in interim periods all disclosures about a reportable segment’s profit or loss and assets that are currently required annually. The guidance is effective for public entities for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The guidance is applied retrospectively to all periods presented in the financial statements, unless it is impracticable. We adopted the new standard when it was effective for us beginning with our 2024 Form 10-K. The amended guidance had minimal impact on our consolidated financial statements and disclosures. See Note 6. Pending Adoption of Recent Accounting Pronouncements In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740) Improvements to Income Tax Disclosures (ASU 2023-09) enhancing the transparency and decision usefulness of income tax disclosures. ASU 2023-09 addresses investor requests for more transparency about income tax information through improvements to income tax disclosures primarily related to the rate reconciliation and income taxes paid information. ASU 2023-09 is effective for annual periods beginning after December 15, 2024, with early adoption permitted. The amendments in ASU 2023-09 are applied on a prospective basis, though retrospective application is permitted. We did not early adopt this pronouncement and are in the process of evaluating its impact on our consolidated financial statements and related disclosures. In March 2024, the SEC issued a final climate disclosure rule, which requires registrants to disclose climate-related information in registration statements and annual reports. The final rule also requires certain disclosures related to risk management and governance over climate-related risks, material climate targets and goals, and material Scope 1 and Scope 2 greenhouse gas emissions. For calendar year companies, the ruling requires certain disclosures in annual reports for the year ending December 31, 2025. On April 4, 2024, the SEC voluntarily stayed the final rule pending the completion of judicial review of cases pending in the Eighth Circuit. We are continuing to evaluate the impact of the final rule on our consolidated financial statements and disclosures. In November 2024, the FASB issued guidance to improve the disclosure of expenses in commonly presented expense captions. The new guidance requires a public entity to provide tabular disclosure, on an annual and interim basis, of amounts for the following expense categories: (1) purchases of inventory, (2) employee compensation, (3) depreciation and (4) intangible asset amortization, as included in each relevant expense caption. A relevant expense caption is an expense caption presented on the face of the income statement that contains any of the expense categories noted. Additionally, on an annual and interim basis, a qualitative description is required for amounts remaining in relevant expense captions that are not separately disaggregated quantitatively. The guidance also requires certain amounts that are currently required to be disclosed to be included in the same tabular disclosure as these disaggregation requirements. Furthermore, on an annual and interim basis, a public entity is required to separately disclose selling expenses and annually, disclose a description of the selling expenses. The guidance is effective for 2027 annual reporting, and in the first quarter of 2028 for interim reporting, with early adoption permitted, to be applied on a prospective basis, with retrospective application permitted. We will adopt the guidance when it becomes effective, in our 2027 annual reporting and each quarter thereafter, on a prospective basis.

Revenues (Tables)

Revenues (Tables)	12 Months Ended
Revenues (Tables)	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The following table presents our revenues disaggregated by major product category (in thousands). Broadband Solutions Automation Solutions Smart Buildings Solutions Total Year Ended December 31, 2024 Smart Infrastructure Solutions $ 598,215 $ — $ 545,575 $ 1,143,790 Automation Solutions — 1,317,189 — 1,317,189 Total $ 598,215 $ 1,317,189 $ 545,575 $ 2,460,979 Year Ended December 31, 2023 Smart Infrastructure Solutions $ 555,030 $ — $ 567,801 $ 1,122,831 Automation Solutions — 1,389,253 — 1,389,253 Total $ 555,030 $ 1,389,253 $ 567,801 $ 2,512,084 Year Ended December 31, 2022 Smart Infrastructure Solutions $ 571,426 $ — $ 627,052 $ 1,198,478 Automation Solutions — 1,408,007 — 1,408,007 Total $ 571,426 $ 1,408,007 $ 627,052 $ 2,606,485 The following table presents our revenues disaggregated by geography, based on the location of the customer purchasing the product (in thousands). Americas EMEA APAC Total Revenues Year Ended December 31, 2024 Smart Infrastructure Solutions $ 853,539 $ 173,023 $ 117,228 $ 1,143,790 Automation Solutions 782,312 335,396 199,481 1,317,189 Total $ 1,635,851 $ 508,419 $ 316,709 $ 2,460,979 Year Ended December 31, 2023 Smart Infrastructure Solutions $ 824,991 $ 180,880 $ 116,960 $ 1,122,831 Automation Solutions 787,739 385,454 216,060 1,389,253 Total $ 1,612,730 $ 566,334 $ 333,020 $ 2,512,084 Year Ended December 31, 2022 Smart Infrastructure Solutions $ 915,491 $ 149,327 $ 133,660 $ 1,198,478 Automation Solutions 816,508 372,473 219,026 1,408,007 Total $ 1,731,999 $ 521,800 $ 352,686 $ 2,606,485
Schedule of Contract with Customer, Asset and Liability	The following table presents estimated and accrued variable consideration: December 31, 2024 December 31, 2023 (In thousands) Accrued rebates included in accrued liabilities $ 51,063 $ 49,255 Accrued returns included in accrued liabilities 15,950 15,570 Price adjustment recognized against gross accounts receivable 29,100 26,005 Balance at December 31, 2022 $ 33,243 New deferrals 35,157 Acquisitions 104 Revenue recognized (37,442) Balance at December 31, 2023 $ 31,062 New deferrals 57,133 Revenue recognized (48,067) Balance at December 31, 2024 $ 40,128

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
Acquisitions (Tables)	Dec. 31, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the estimated, preliminary fair values of the assets acquired and liabilities assumed for Precision as of the acquisition date (in thousands): Receivables $ 24,191 Inventory 7,098 Other current assets 1,486 Property, plant and equipment 5,330 Intangible assets 194,100 Goodwill 121,604 Operating lease right-of-use assets 2,731 Total assets acquired $ 356,540 Accounts payable $ 11,662 Accrued liabilities 10,193 Deferred income taxes 42,585 Long-term operating lease liabilities 2,468 Total liabilities assumed $ 66,908 Net assets $ 289,632 Receivables $ 5,093 Inventory 7,590 Other current assets 2,733 Property, plant and equipment 13,135 Intangible assets 44,328 Goodwill 32,243 Deferred income taxes 433 Operating lease right-of-use assets 131 Other long-lived assets 4,559 Total assets acquired $ 110,245 Accounts payable $ 1,907 Accrued liabilities 4,283 Deferred income taxes 6,551 Total liabilities assumed $ 12,741 Net assets $ 97,504
Schedule of Acquired Intangible Assets	The intangible assets related to the acquisition consisted of the following: Fair Value Amortization Period (In thousands) (In years) Intangible assets subject to amortization: Developed technologies $ 24,700 5.0 Customer relationships 161,900 20.0 Trademarks 3,000 2.5 Non-compete agreements 4,500 5.0 Total intangible assets subject to amortization $ 194,100 Intangible assets not subject to amortization: Goodwill $ 121,604 n/a Total intangible assets not subject to amortization $ 121,604 Total intangible assets $ 315,704 Weighted average amortization period 17.5 The intangible assets related to the acquisition consisted of the following: Fair Value Amortization Period (In thousands) (In years) Intangible assets subject to amortization: Customer relationships $ 41,161 20.0 Trademarks 2,184 7.0 Sales backlog 983 0.2 Total intangible assets subject to amortization $ 44,328 Intangible assets not subject to amortization: Goodwill $ 32,243 n/a Total intangible assets not subject to amortization $ 32,243 Total intangible assets $ 76,571 Weighted average amortization period 18.9
Schedule of Pro Forma Information	The following table illustrates the unaudited pro forma effect on operating results as if the Precision acquisition had been completed as of January 1, 2023. Years Ended December 31, 2024 2023 (In thousands, except per share data) (Unaudited) Revenues $ 2,531,820 $ 2,640,396 Net income attributable to Belden stockholders 202,947 232,713 Diluted income per share attributable to Belden stockholders $ 4.91 $ 5.43

Disposals (Tables)

Disposals (Tables)	12 Months Ended
Disposals (Tables)	Dec. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Disposal Groups, Including Discontinued Operations	The following table summarizes the operating results of the Tripwire disposal group up to the February 22, 2022 disposal date: January 1 - (In thousands) Revenues $ 12,067 Cost of sales (3,256) Gross profit 8,811 Selling, general and administrative expenses (8,185) Research and development expenses (5,528) Amortization of intangible assets (638) Loss before taxes $ (5,540)

Operating Segments and Geogra_2

Operating Segments and Geographic Information (Tables)	12 Months Ended
Operating Segments and Geographic Information (Tables)	Dec. 31, 2024
Segment Reporting [Abstract]
Schedule of Operating Segment Information	Operating Segment Information Years Ended December 31, 2024 2023 2022 (In thousands) Smart Infrastructure Solutions Segment Revenues $ 1,143,790 $ 1,122,831 $ 1,198,478 Affiliate Revenues 142 127 633 Segment Cost of Sales (789,272) (774,958) (852,231) Segment Selling, General and Administrative Expenses (177,414) (171,873) (160,802) Segment Research and Development Expenses (37,154) (27,020) (24,561) Segment EBITDA $ 140,092 $ 149,107 $ 161,517 Segment assets $ 663,623 $ 637,105 $ 593,653 Expenditures of property, plant and equipment $ 33,343 $ 36,237 $ 33,535 Items excluded from segment measures: Depreciation expense $ 26,231 $ 24,943 $ 23,387 Amortization of intangibles 28,642 20,085 17,595 Amortization of software development intangible assets 12 — 54 Adjustments related to acquisitions and divestitures 3,572 5,359 5,589 Severance, restructuring, and acquisition integration costs 15,165 11,221 9,200 Years Ended December 31, 2024 2023 2022 (In thousands) Automation Solutions Segment Revenues $ 1,317,189 $ 1,389,253 $ 1,408,007 Affiliate Revenues 801 1,296 442 Segment Cost of Sales (701,251) (739,129) (792,681) Segment Selling, General and Administrative Expenses (275,024) (278,406) (260,694) Segment Research and Development Expenses (71,949) (85,686) (77,995) Segment EBITDA $ 269,766 $ 287,328 $ 277,079 Segment assets $ 783,353 $ 727,477 $ 677,235 Expenditures of property, plant and equipment $ 66,063 $ 64,072 $ 58,713 Items excluded from segment measures: Depreciation expense $ 30,152 $ 26,436 $ 23,282 Amortization of intangibles 20,152 20,290 20,265 Amortization of software development intangible assets 10,552 7,692 3,821 Adjustments related to acquisitions and divestitures 1,192 818 2,244 Severance, restructuring, and acquisition integration costs 7,649 13,931 7,485 Years Ended December 31, 2024 2023 2022 (In thousands) Total Segments Segment Revenues $ 2,460,979 $ 2,512,084 $ 2,606,485 Affiliate Revenues 943 1,423 1,075 Segment Cost of Sales (1,490,523) (1,514,087) (1,644,912) Segment Selling, General and Administrative Expenses (452,438) (450,279) (421,496) Segment Research and Development Expenses (109,103) (112,706) (102,556) Segment EBITDA $ 409,858 $ 436,435 $ 438,596 Segment assets $ 1,446,976 $ 1,364,582 $ 1,270,888 Expenditures of property, plant and equipment $ 99,406 $ 100,309 $ 92,248 Items excluded from segment measures: Depreciation expense $ 56,383 $ 51,379 $ 46,669 Amortization of intangibles 48,794 40,375 37,860 Amortization of software development intangible assets 10,564 7,692 3,875 Adjustments related to acquisitions and divestitures 4,764 6,177 7,833 Severance, restructuring, and acquisition integration costs 22,814 25,152 16,685
Schedule of Reconciliation of Total Reportable Segments' Revenues and EBITDA to Consolidated Revenues and Consolidated Income Before Taxes	The following table is a reconciliation of the total of the reportable segments’ Revenues and EBITDA to consolidated revenues and consolidated income from continuing operations before taxes, respectively. Years Ended December 31, 2024 2023 2022 (In thousands) Total segment and consolidated revenues $ 2,460,979 $ 2,512,084 $ 2,606,485 Total Segment EBITDA $ 409,858 $ 436,435 $ 438,596 Depreciation expense (56,383) (51,379) (46,669) Amortization of intangibles (48,794) (40,375) (37,860) Severance, restructuring, and acquisition integration costs (1) (22,814) (25,152) (16,685) Amortization of software development intangible assets (10,564) (7,692) (3,875) Adjustments related to acquisitions and divestitures (2) (4,764) (6,177) (7,833) Gain on sale of assets (3) — 12,056 37,891 Eliminations (79) (198) (231) Consolidated operating income 266,460 317,518 363,334 Interest expense, net (38,303) (33,625) (43,554) Loss on debt extinguishment — — (6,392) Non-operating pension benefit (cost) (215) 1,863 4,005 Consolidated income from continuing operations before taxes $ 227,942 $ 285,756 $ 317,393 (1) Includes costs associated with acquisitions, productivity initiatives, and manufacturing footprint actions. (2) Includes fair value adjustments of acquired assets and costs associated with a former subsidiary that was previously divested. (3) During 2023, we sold certain real estate in Canada for $13.8 million, net of transaction costs and recognized a $12.1 million pre-tax gain on sale. During 2022, we sold certain real estate in the United States for $42.2 million, net of transaction costs and recognized a $37.9 million pre-tax gain on sale. See Note 11, Property, Plant, and Equipment , for details.
Schedule of Reconciliations of Other Segment Measures to Consolidated Totals	Below are reconciliations of other segment measures to the consolidated totals. Years Ended December 31, 2024 2023 2022 (In thousands) Total segment assets $ 1,446,976 $ 1,364,582 $ 1,270,888 Cash and cash equivalents 370,302 597,044 687,676 Goodwill 1,018,677 907,331 862,253 Intangible assets, less accumulated amortization 419,074 269,144 246,830 Deferred income taxes 16,353 15,739 14,642 Corporate assets 56,556 86,351 79,386 Total assets $ 3,327,938 $ 3,240,191 $ 3,161,675 Total segment expenditures of property, plant and equipment $ 99,406 $ 100,309 $ 92,248 Corporate expenditures of property, plant and equipment 29,694 16,422 12,846 Total expenditures of property, plant and equipment $ 129,100 $ 116,731 $ 105,094
Schedule of Revenue from External Customers and Long-Lived Assets Based on Physical Location	The table below summarizes net sales and long-lived assets for the years ended December 31, 2024, 2023, and 2022 for the following countries: U.S., Canada, China, and Germany. No other individual foreign country’s net sales or long-lived assets are material to the Company. United Canada China Germany All Other Total (In thousands, except percentages) Year ended December 31, 2024 Revenues $ 1,392,262 $ 160,012 $ 92,108 $ 118,256 $ 698,341 $ 2,460,979 Percent of total revenues 57 % 6 % 4 % 5 % 28 % 100 % Long-lived assets $ 290,282 $ 13,799 $ 38,622 $ 62,170 $ 154,180 $ 559,053 Year ended December 31, 2023 Revenues $ 1,383,212 $ 169,122 $ 104,718 $ 134,130 $ 720,902 $ 2,512,084 Percent of total revenues 55 % 7 % 4 % 5 % 29 % 100 % Long-lived assets $ 230,267 $ 13,355 $ 45,326 $ 67,758 $ 144,606 $ 501,312 Year ended December 31, 2022 Revenues $ 1,448,247 $ 188,013 $ 126,904 $ 131,485 $ 711,836 $ 2,606,485 Percent of total revenues 56 % 7 % 5 % 5 % 27 % 100 % Long-lived assets $ 203,070 $ 12,805 $ 45,866 $ 44,061 $ 122,565 $ 428,367

Income Per Share (Tables)

Income Per Share (Tables)	12 Months Ended
Income Per Share (Tables)	Dec. 31, 2024
Earnings Per Share [Abstract]
Schedule of Basis for Income Per Share Computations	The following table presents the basis of the income per share computations: Years Ended December 31, 2024 2023 2022 (In thousands) Numerator: Income from continuing operations $ 198,414 $ 242,556 $ 267,748 Less: Net income (loss) attributable to noncontrolling interest (19) (203) 159 Income from continuing operations attributable to Belden common stockholders 198,433 242,759 267,589 Add: Loss from discontinued operations, net of tax — — (3,685) Add: Loss on disposal of discontinued operations, net of tax — — (9,241) Net income attributable to Belden common stockholders $ 198,433 $ 242,759 $ 254,663 Denominator: Weighted average shares outstanding, basic 40,694 42,237 43,845 Effect of dilutive common stock equivalents 605 622 692 Weighted average shares outstanding, diluted 41,299 42,859 44,537

Credit Losses (Tables)

Credit Losses (Tables)	12 Months Ended
Credit Losses (Tables)	Dec. 31, 2024
Credit Loss [Abstract]
Schedule of Accounts Receivable, Allowance for Credit Loss	The following table presents the activity in the allowance for doubtful accounts for the years ended December 31, 2024 and 2023 (in thousands). Balance at December 31, 2022 $ 7,954 Current period provision 16,167 Recoveries collected (861) Write-offs (154) Currency impact 8 Balance at December 31, 2023 $ 23,114 Current period provision 3,198 Recoveries collected (677) Write-offs (167) Currency impact (211) Balance at December 31, 2024 $ 25,257

Inventories (Tables)

Inventories (Tables)	12 Months Ended
Inventories (Tables)	Dec. 31, 2024
Inventory Disclosure [Abstract]
Schedule of Major Classes of Inventories	The major classes of inventories were as follows: December 31, 2024 2023 (In thousands) Raw materials $ 187,530 $ 185,233 Work-in-process 40,442 41,197 Finished goods 186,237 208,425 Gross inventories 414,209 434,855 Excess and obsolete reserves (71,110) (67,868) Net inventories $ 343,099 $ 366,987

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
Property, Plant and Equipment (Tables)	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Schedule of Carrying Values of Property, Plant and Equipment	The carrying values of property, plant and equipment were as follows: December 31, 2024 2023 (In thousands) Land and land improvements $ 24,841 $ 27,627 Buildings and leasehold improvements 125,292 108,960 Machinery and equipment 687,430 666,527 Computer equipment and software 145,281 132,668 Construction in process 174,811 157,056 Gross property, plant and equipment 1,157,655 1,092,838 Accumulated depreciation (662,030) (641,769) Net property, plant and equipment $ 495,625 $ 451,069

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2024
Leases [Abstract]
Schedule of Components of Lease Expense	The components of lease expense were as follows: Years Ended December 31, 2024 2023 2022 (In thousands) Operating lease cost $ 27,751 $ 22,562 $ 21,420 Finance lease cost Amortization of right-of-use asset $ 997 $ 780 $ 878 Interest on lease liabilities 571 330 258 Total finance lease cost $ 1,568 $ 1,110 $ 1,136
Supplemental Cash Flow Information Related To Leases	Supplemental cash flow information related to leases was as follows: Years Ended December 31, 2024 2023 2022 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 22,175 $ 19,080 $ 18,338
Supplemental Balance Sheet Information Related To Leases	Supplemental balance sheet information related to leases was as follows: December 31, 2024 2023 (In thousands, except lease term and discount rate) Operating leases: Total operating lease right-of-use assets $ 118,551 $ 89,686 Accrued liabilities $ 19,437 $ 18,226 Long-term operating lease liabilities 100,049 74,941 Total operating lease liabilities $ 119,486 $ 93,167 Finance leases: Other long-lived assets, at cost $ 12,257 $ 6,560 Accumulated depreciation (2,322) (1,347) Other long-lived assets, net $ 9,935 $ 5,213 Accrued liabilities $ 1,648 $ 719 Other long-term liabilities 8,845 6,084 Total finance lease liabilities $ 10,493 $ 6,803
Supplemental Other Information Related To Leases	Weighted Average Remaining Lease Term Operating leases 10 years 6 years Finance leases 6 years 9 years Weighted Average Discount Rate Operating leases 6.2% 5.0 % Finance leases 4.8% 4.3 %
Schedule of Operating Lease, Liability, Maturity	The following table summarizes maturities of lease liabilities as of December 31, 2024 (in thousands): 2025 $ 28,148 2026 25,596 2027 16,739 2028 14,947 2029 12,820 Thereafter 80,017 Total $ 178,267 The following table summarizes maturities of lease liabilities as of December 31, 2023 (in thousands): 2024 $ 18,664 2025 18,173 2026 16,527 2027 9,074 2028 7,350 Thereafter 28,068 Total $ 97,856
Schedule of Finance Lease, Liability, Maturity	The following table summarizes maturities of lease liabilities as of December 31, 2024 (in thousands): 2025 $ 28,148 2026 25,596 2027 16,739 2028 14,947 2029 12,820 Thereafter 80,017 Total $ 178,267 The following table summarizes maturities of lease liabilities as of December 31, 2023 (in thousands): 2024 $ 18,664 2025 18,173 2026 16,527 2027 9,074 2028 7,350 Thereafter 28,068 Total $ 97,856

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
Intangible Assets (Tables)	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Carrying Value of Intangible Assets	The carrying values of intangible assets were as follows: December 31, 2024 December 31, 2023 Gross Accumulated Net Gross Accumulated Net (In thousands) (In thousands) Goodwill $ 1,018,677 $ — $ 1,018,677 $ 907,331 $ — $ 907,331 Definite-lived intangible assets subject to amortization: Developed technology $ 341,303 $ (247,904) $ 93,399 $ 300,240 $ (219,210) $ 81,030 Customer relationships 454,298 (164,279) 290,019 296,616 (145,739) 150,877 Trademarks 72,804 (41,733) 31,071 43,862 (35,089) 8,773 Backlog 14,170 (13,705) 465 14,847 (13,483) 1,364 In-service research and development 5,000 (5,000) — 5,000 (5,000) — Non-compete agreements 5,265 (1,145) 4,120 810 (710) 100 Total intangible assets subject to amortization $ 892,840 $ (473,766) $ 419,074 $ 661,375 $ (419,231) $ 242,144 Indefinite-lived intangible assets not subject to amortization: Trademarks $ — $ — $ — $ 27,000 $ — $ 27,000 Total intangible assets not subject to amortization $ — $ — $ — $ 27,000 $ — $ 27,000 Intangible assets $ 892,840 $ (473,766) $ 419,074 $ 688,375 $ (419,231) $ 269,144
Schedule of Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill assigned to reporting units in our reportable segments are as follows: Smart Infrastructure Solutions Automation Solutions Consolidated (In thousands) Balance at December 31, 2022 $ 477,834 $ 384,419 $ 862,253 Acquisitions 32,243 5,816 38,059 Translation impact 1,447 5,572 7,019 Balance at December 31, 2023 $ 511,524 $ 395,807 $ 907,331 Acquisitions 120,962 2,620 123,582 Translation impact (3,128) (9,108) (12,236) Balance at December 31, 2024 $ 629,358 $ 389,319 $ 1,018,677
Schedule of Indefinite-Lived Intangible Assets	The changes in the carrying amount of indefinite-lived trademarks are as follows: Smart Infrastructure Solutions Automation Consolidated (In thousands) Balance at December 31, 2022 and 2023 $ 27,000 $ — $ 27,000 Reclassify to definite-lived (27,000) — (27,000) Balance at December 31, 2024 $ — $ — $ —

Accrued Liabilities (Tables)

Accrued Liabilities (Tables)	12 Months Ended
Accrued Liabilities (Tables)	Dec. 31, 2024
Accrued Liabilities [Abstract]
Schedule of Carrying Value of Accrued Liabilities	The carrying values of accrued liabilities were as follows: December 31, 2024 2023 (In thousands) Wages, severance and related taxes $ 79,479 $ 71,880 Accrued rebates 51,063 49,255 Employee benefits 26,101 27,487 Deferred revenue 29,781 23,718 Lease liabilities 21,085 18,945 Accrued interest 17,628 18,774 Other (individual items less than 5% of total current liabilities) 81,843 80,230 Accrued liabilities $ 306,980 $ 290,289

Restructuring Activities (Table

Restructuring Activities (Tables)	12 Months Ended
Restructuring Activities (Tables)	Dec. 31, 2024
Restructuring and Related Activities [Abstract]
Schedule of Severance, Restructuring and Integration Costs by Segment	The following table summarizes the costs of the programs described above by segment, all of which were excluded from Segment EBITDA: Severance Restructuring Total Costs (In thousands) Year Ended December 31, 2024 Smart Infrastructure Solutions $ 1,824 $ 12,387 $ 14,211 Automation Solutions 52 2,557 2,609 Total $ 1,876 $ 14,944 $ 16,820 Year Ended December 31, 2023 Smart Infrastructure Solutions $ 4,180 $ 5,948 $ 10,128 Automation Solutions 4,674 3,852 8,526 Total $ 8,854 $ 9,800 $ 18,654 Year Ended December 31, 2022 Smart Infrastructure Solutions $ 1,070 $ 7,060 $ 8,130 Automation Solutions 493 7,847 8,340 Total $ 1,563 $ 14,907 $ 16,470 The following table summarizes the costs of the programs described above by financial statement line item in the Consolidated Statement of Operations: Years Ended December 31, 2024 2023 2022 (In thousands) Cost of sales $ 1,318 $ 1,667 $ 10,060 Selling, general and administrative expenses 15,375 15,362 6,410 Research and development expenses 127 1,625 — Total $ 16,820 $ 18,654 $ 16,470 The table below sets forth severance activity included in accrued liabilities that occurred for the Acquisition Integration Program and Productivity Initiative Program described above (in thousands). Balance at December 31, 2022 $ — New charges 8,254 Cash payments (3,151) Foreign currency translation 68 Other adjustments (161) Balance at December 31, 2023 $ 5,010 New charges 1,876 Cash payments (1,208) Foreign currency translation (35) Other adjustments (564) Balance at December 31, 2024 $ 5,079

Long-Term Debt and Other Borr_2

Long-Term Debt and Other Borrowing Arrangements (Tables)	12 Months Ended
Long-Term Debt and Other Borrowing Arrangements (Tables)	Dec. 31, 2024
Debt Disclosure [Abstract]
Schedule of Carrying Values of Long-Term Debt and Other Borrowing Arrangements	The carrying values of our long-term debt and other borrowing arrangements were as follows: December 31, 2024 2023 (In thousands) Revolving credit agreement due 2026 $ — $ — Senior subordinated notes: 3.375% Senior subordinated notes due 2027 465,795 497,025 3.875% Senior subordinated notes due 2028 362,285 386,575 3.375% Senior subordinated notes due 2031 310,530 331,350 Total senior subordinated notes 1,138,610 1,214,950 Less unamortized debt issuance costs (8,509) (10,739) Long-term debt $ 1,130,101 $ 1,204,211
Schedule of Senior Subordinated Notes	The senior subordinated notes due 2027 and 2028 were redeemable after July 15, 2022 and March 15, 2023, respectively, and the senior subordinated notes due 2031 are redeemable after July 15, 2026 at the following redemption prices as a percentage of the face amount of the notes: Senior Subordinated Notes due 2027 2028 2031 Year Percentage Year Percentage Year Percentage 2022 101.688 % 2023 101.938 % 2026 101.688 % 2023 101.125 % 2024 101.292 % 2027 100.844 % 2024 100.563 % 2025 100.646 % 2028 100.422 % 2025 and thereafter 100.000 % 2026 and thereafter 100.000 % 2029 and thereafter 100.000 %
Schedule of Maturities on Outstanding Long-Term Debt and Other Borrowings	Maturities on outstanding long-term debt and other borrowings during each of the five years subsequent to December 31, 2024 are as follows (in thousands): 2025 $ — 2026 — 2027 465,795 2028 362,285 2029 — Thereafter 310,530 $ 1,138,610

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense	Years Ended December 31, 2024 2023 2022 (in thousands) Income from continuing operations before taxes: United States operations $ 74,850 $ 86,805 $ 97,900 Foreign operations 153,092 198,951 219,493 Income from continuing operations before taxes $ 227,942 $ 285,756 $ 317,393 Income tax expense (benefit): Currently payable United States federal $ 29,589 $ 34,091 $ 34,310 United States state and local 1,573 3,900 4,801 Foreign 14,320 18,166 6,677 45,482 56,157 45,788 Deferred United States federal (6,342) (7,497) (446) United States state and local (1,041) (623) (50) Foreign (8,571) (4,837) 4,353 (15,954) (12,957) 3,857 Income tax expense $ 29,528 $ 43,200 $ 49,645
Schedule of Effective Income Tax Rate Reconciliation from Continuing Operations	Years Ended December 31, 2024 2023 2022 Effective income tax rate reconciliation from continuing operations: United States federal statutory rate 21.0% 21.0% 21.0% State and local income taxes (0.2)% 0.8% 1.2% Impact of change in tax contingencies 3.8% 0.3% 0.1% Foreign income tax rate differences (11.6)% (10.5)% (10.9)% Impact of change in deferred tax asset valuation allowance (0.5)% 0.5% (2.5)% Domestic permanent differences and tax credits (0.5)% 2.9% 6.3% Impact of share-based compensation 1.0% 0.1% 0.4% 13.0% 15.1% 15.6%
Schedule of Components of Deferred Income Tax Balances	The components of deferred income taxes were as follows: December 31, 2024 2023 (In thousands) Components of deferred income tax balances: Deferred income tax liabilities: Plant, equipment, and intangibles $ (136,386) $ (98,112) Right of use asset (31,603) (21,440) (167,989) (119,552) Deferred income tax assets: Net operating loss, capital loss, and tax credit carryforwards 115,591 114,896 Reserves and accruals 54,085 41,474 Lease liability 32,351 22,073 Postretirement, pensions, and stock compensation 13,045 17,052 Valuation allowances (108,064) (109,676) 107,008 85,819 Net deferred income tax liability $ (60,981) $ (33,733)
Schedule of Net Operating Loss Carryforwards	The following tables summarize our net operating loss carryforwards and tax credit carryforwards as of December 31, 2024 by jurisdiction: Net Operating Loss Carryforwards (In thousands) United States - Federal and various states $ 39,265 Germany 19,369 United Kingdom 17,771 Other 8,070 Australia 7,501 Total $ 91,976
Schedule of Tax Credit Carryforwards	Tax Credit Carryforwards (In thousands) United States $ 13,039 Belgium 2,046 Total $ 15,085
Schedule of Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits	In 2024, we recognized a net $8.5 million increase to reserves for uncertain tax positions. A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows: 2024 2023 (In thousands) Balance at beginning of year $ 7,143 $ 6,180 Additions for tax positions of prior years 9,354 605 Additions based on tax positions related to the current year 524 358 Reduction for tax positions of prior years (1,340) — Balance at end of year $ 15,681 $ 7,143

Pension and Other Postretirem_2

Pension and Other Postretirement Benefits (Tables)	12 Months Ended
Pension and Other Postretirement Benefits (Tables)	Dec. 31, 2024
Retirement Benefits [Abstract]
Schedule of Change in Benefit Obligation	The following tables provide a reconciliation of the changes in the plans’ benefit obligations and fair value of assets as well as a statement of the funded status and balance sheet reporting for these plans. Pension Benefits Other Benefits Years Ended December 31, 2024 2023 2024 2023 (In thousands) Change in benefit obligation: Benefit obligation, beginning of year $ (342,759) $ (317,424) $ (21,312) $ (19,944) Service cost (3,131) (2,632) (39) (11) Interest cost (14,759) (15,237) (949) (1,012) Participant contributions (424) (435) (3) (3) Actuarial gain (loss) 25,815 (16,231) (175) (1,179) Settlements 8,338 2,987 — — Plan amendments 104 — — — Foreign currency exchange rate changes 7,681 (12,427) 1,549 (492) Benefits paid 15,706 18,640 1,405 1,329 Benefit obligation, end of year $ (303,429) $ (342,759) $ (19,524) $ (21,312)
Schedule of Change in Plan Assets	Pension Benefits Other Benefits Years Ended December 31, 2024 2023 2024 2023 (In thousands) Change in plan assets: Fair value of plan assets, beginning of year $ 301,378 $ 281,332 $ — $ — Actual return on plan assets 641 21,141 — — Employer contributions 10,427 8,432 1,402 1,326 Plan participant contributions 424 435 3 3 Settlements (8,292) (2,987) — — Foreign currency exchange rate changes (5,696) 11,665 — — Benefits paid (15,706) (18,640) (1,405) (1,329) Fair value of plan assets, end of year $ 283,176 $ 301,378 $ — $ —
Schedule of Amounts Recognized in Balance Sheets	Funded status, end of year $ (20,253) $ (41,381) $ (19,524) $ (21,312) Amounts recognized in the balance sheets: Prepaid benefit cost $ 27,842 $ 16,358 $ — $ — Accrued benefit liability, current (2,969) (3,051) (1,390) (1,427) Accrued benefit liability, noncurrent (45,126) (54,688) (18,134) (19,885) Net funded status $ (20,253) $ (41,381) $ (19,524) $ (21,312)
Schedule of Components of Net Periodic Benefit Costs	The following table provides the components of net periodic benefit costs for the plans. Pension Benefits Other Benefits Years Ended December 31, 2024 2023 2022 2024 2023 2022 (In thousands) Components of net periodic benefit cost: Service cost $ 3,131 $ 2,632 $ 3,491 $ 39 $ 11 $ 24 Interest cost 14,759 15,237 9,248 949 1,012 761 Expected return on plan assets (16,299) (16,512) (16,023) — — — Amortization of prior service cost 180 176 174 — — — Settlement loss (gain) 1,147 (101) 1,189 — — — Net loss (gain) recognition (110) (938) 734 (411) (737) (73) Net periodic benefit cost (income) $ 2,808 $ 494 $ (1,187) $ 577 $ 286 $ 712
Schedule of Assumptions Used in Determining Benefit Obligations and Net Periodic Benefit Cost Amounts	The following table presents the assumptions used in determining the benefit obligations and the net periodic benefit cost amounts. Pension Benefits Other Benefits Years Ended December 31, Years Ended December 31, 2024 2023 2024 2023 Weighted average assumptions for benefit obligations at year end: Discount rate 5.1 % 4.5 % 4.7 % 4.7 % Salary increase 3.2 % 3.2 % N/A N/A Cash balance interest credit rate 4.4 % 4.4 % N/A N/A Weighted average assumptions for net periodic cost for the year: Discount rate 4.5 % 4.9 % 4.7 % 5.2 % Salary increase 3.2 % 3.2 % N/A N/A Cash balance interest credit rate 4.4 % 4.5 % N/A N/A Expected return on assets 5.2 % 5.2 % N/A N/A Assumed health care cost trend rates: Health care cost trend rate assumed for next year N/A N/A 5.1 % 5.2 % Rate that the cost trend rate gradually declines to N/A N/A 4.6 % 4.6 % Year that the rate reaches the rate it is assumed to remain at N/A N/A 2028 2028
Schedule of Fair Values of Pension Plan Assets by Asset Category	The following table presents the fair values of the pension plan assets by asset category. December 31, 2024 December 31, 2023 Fair Market Value at December 31, 2024 Quoted Prices Significant Investments Measured at Net Asset Value Fair Market Value at December 31, 2023 Quoted Prices Significant Investments Measured at Net Asset Value (In thousands) (In thousands) Asset Category: Equity securities(a) U.S. equities fund $ 40,260 $ — $ — $ 40,260 $ 34,966 $ — $ — $ 34,966 Non-U.S. equities fund 37,321 — — 37,321 35,939 — — 35,939 Debt securities(b) Government bond fund 63,502 — — 63,502 77,480 — — 77,480 Corporate bond fund 62,950 — — 62,950 62,456 — — 62,456 Fixed income fund(c) 20,348 — — 20,348 22,673 — — 22,673 Liability driven investment fund(d) 43,354 — — 43,354 51,412 — — 51,412 Other investments(e) 7,382 — — 7,382 9,565 — — 9,565 Cash and equivalents 8,059 3,404 — 4,655 6,887 2,662 — 4,225 Total $ 283,176 $ 3,404 $ — $ 279,772 $ 301,378 $ 2,662 $ — $ 298,716 (a) This category includes investments in actively managed and indexed investment funds that invest in a diversified pool of equity securities of companies located in the U.S., Canada, Western Europe and other developed countries throughout the world. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund. Equity securities held in separate accounts are valued based on observable quoted prices on active exchanges. (b) This category includes investments in investment funds that invest in U.S. treasuries; other national, state and local government bonds; and corporate bonds of highly rated companies from diversified industries. The funds are valued using the net asset value method in which an average of the market prices for the underlying investments is used to value the fund. (c) This category includes guaranteed insurance contracts and annuity policies. (d) This category includes investments in funds that are designed to provide leveraged exposure to changes in interest rates. The fund purchases shares of funds that invest in government bonds, debt repurchase agreements, total return swaps and interest rate swaps. (e)
Schedule of Benefits Expected to be Paid in Subsequent Years from Our Pension and Other Postretirement as Well as Medicare Subsidy Receipts	The following table reflects the benefits as of December 31, 2024 expected to be paid in each of the next five years and in the aggregate for the five years thereafter from our pension and other postretirement plans. Because our other postretirement plans are unfunded, the anticipated benefits with respect to these plans will come from our own assets. Because our pension plans are primarily funded plans, the anticipated benefits with respect to these plans will come primarily from the trusts established for these plans. Pension Other (In thousands) 2025 $ 20,449 $ 1,424 2026 20,417 1,409 2027 20,756 1,401 2028 23,151 1,405 2029 22,820 1,397 2029-2033 103,486 6,892 Total $ 211,079 $ 13,928
Schedule of Accumulated Other Comprehensive Loss and Changes in these Amounts	The pre-tax amounts in accumulated other comprehensive loss that have not yet been recognized as components of net periodic benefit cost at December 31, 2024 and the changes in these amounts during the year ended December 31, 2024 are as follows. Pension Other (In thousands) Components of accumulated other comprehensive loss: Net actuarial loss (gain) $ 13,120 $ (4,398) Net prior service cost 1,831 — $ 14,951 $ (4,398) Pension Other (In thousands) Changes in accumulated other comprehensive loss: Net actuarial loss (gain), beginning of year $ 24,298 $ (5,322) Amortization of actuarial gain 110 411 Actuarial loss (gain) (25,815) 175 Asset loss 15,658 — Settlement loss recognized (1,147) — Currency impact 16 338 Net actuarial loss (gain), end of year $ 13,120 $ (4,398) Prior service cost, beginning of year $ 2,148 $ — Amortization of prior service cost (180) — Prior service credit occurring during the year (104) — Currency impact (33) — Prior service cost, end of year $ 1,831 $ —

Comprehensive Income and Accu_2

Comprehensive Income and Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Schedule of 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 Pension and Other Accumulated Other Comprehensive Income (Loss) (In thousands) Balance at December 31, 2022 $ (1,944) $ (3,927) $ (5,871) Other comprehensive loss attributable to Belden before reclassifications (24,431) (9,696) (34,127) Amounts reclassified from accumulated other comprehensive income (139) (1,142) (1,281) Net current period other comprehensive loss attributable to Belden (24,570) (10,838) (35,408) Balance at December 31, 2023 $ (26,514) $ (14,765) $ (41,279) Other comprehensive income attributable to Belden before reclassifications 29,643 8,364 38,007 Amounts reclassified from accumulated other comprehensive income — (260) (260) Net current period other comprehensive income attributable to Belden 29,643 8,104 37,747 Balance at December 31, 2024 $ 3,129 $ (6,661) $ (3,532)
Schedule 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 Affected Line Item in the (In thousands) Amortization of pension and other postretirement benefit plan items: Actuarial gains $ (521) (1) Prior service cost 180 (1) Total before tax (341) Tax expense 81 Total net of tax $ (260) (1) The amortization of these accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit costs (see Note 19).

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
Share-Based Compensation (Tables)	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Income Tax Benefit Recognized for our Share-Based Compensation Arrangements	Compensation cost included in income from continuing operations, primarily selling, general and administrative expense, and the income tax benefit recognized for our share-based compensation arrangements is included below: Years Ended December 31, 2024 2023 2022 (In thousands) Total share-based compensation cost $ 27,532 $ 21,024 $ 23,454 Income tax benefit 6,553 5,004 5,582
Schedule of Fair Values for SARs and Stock Options Estimated on Grant Date Using Black-Scholes-Merton Option-Pricing Formula Which Incorporates Assumptions	Years Ended December 31, 2024 2023 2022 (In thousands, except weighted average fair Weighted-average fair value of SARs granted n/a $ 39.44 $ 21.85 Total intrinsic value of SARs exercised 5,696 12,229 4,384 Tax expense (benefit) from SARs exercised (420) 660 678 Weighted-average fair value of restricted stock units granted 89.98 95.32 61.61 Total fair value of restricted stock units vested 14,031 19,821 16,830 Expected volatility 38.88 % 43.45 % 43.00 % Expected term (in years) 2.9 5.7 5.6 Risk-free rate 4.40 % 4.26 % 1.89 % Dividend yield 0.25 % 0.23 % 0.37 %
Schedule of Share Based Compensation Activity	Stock Appreciation Rights Restricted Stock Units Number Weighted- Weighted- Aggregate Number Weighted- (In thousands, except exercise prices, fair values, and contractual terms) Outstanding at January 1, 2024 413 $ 64.97 6.6 $ 6,220 699 $ 71.95 Granted — — 467 89.98 Exercised or converted (143) 61.94 (254) 55.18 Forfeited or expired (7) 77.60 (21) 76.74 Outstanding at December 31, 2024 263 $ 66.29 6.5 $ 12,199 891 $ 83.35 Exercisable or convertible at December 31, 2024 167 $ 60.66 5.7 $ 8,696

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information (Tables)	12 Months Ended
Supplemental Cash Flow Information (Tables)	Dec. 31, 2024
Supplemental Cash Flow Elements [Abstract]
Schedule of Supplemental Cash Flow Information	Supplemental cash flow information is as follows: Years Ended December 31, 2024 2023 2022 (In thousands) Income tax refunds received $ 25,785 $ 6,680 $ 16,480 Income taxes paid (71,133) (62,367) (71,255) Interest paid (42,402) (42,105) (45,168)

Basis of Presentation (Details)

Basis of Presentation (Details)	12 Months Ended
Basis of Presentation (Details)	Dec. 31, 2024 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	2

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details)	12 Months Ended
Summary of Significant Accounting Policies (Details)	Dec. 31, 2024 USD ($) reportingUnit	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Significant Accounting Policies [Line Items]
Amount of inventory as a percentage of prior year purchases that can be returned by certain distributors	3%
Unprocessed adjustments recognized against gross accounts receivables	$ 29,100,000	$ 26,000,000
Unprocessed adjustments recognized against accounts accrued liabilities	16,000,000	15,600,000
Allowance for doubtful accounts	25,300,000	23,100,000
Bad debt expense, net of recoveries	2,400,000	15,600,000	$ 6,500,000
Obsolescence and other reserves	$ 71,110,000	67,868,000
Amortization Period	19 years 6 months
Number of reporting units used in quantitative assessment \| reportingUnit	6
Impairment		0	0
Accrued rebates	$ 51,063,000	49,255,000
Advertising costs	14,000,000	18,800,000	13,700,000
Valuation allowances	108,064,000	109,676,000
Continuing Operations
Significant Accounting Policies [Line Items]
Impairment	0	0	0
Impairment of intangible assets	$ 0	$ 0	$ 0
Minimum
Significant Accounting Policies [Line Items]
Amortization Period	1 year
Minimum \| Buildings
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment	10 years
Minimum \| Machinery and equipment
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment	5 years
Minimum \| Computer Equipment and Software
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment	5 years
Maximum
Significant Accounting Policies [Line Items]
Amortization Period	20 years
Maximum \| Buildings
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment	40 years
Maximum \| Machinery and equipment
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment	12 years
Maximum \| Computer Equipment and Software
Significant Accounting Policies [Line Items]
Estimated useful life of property, plant, and equipment	10 years

Revenues - Schedule of Major Pr

Revenues - Schedule of Major Product Category (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 2,460,979	$ 2,512,084	$ 2,606,485
Smart Infrastructure Solutions
Disaggregation of Revenue [Line Items]
Revenues	1,143,790	1,122,831	1,198,478
Automation Solutions
Disaggregation of Revenue [Line Items]
Revenues	1,317,189	1,389,253	1,408,007
Broadband Solutions
Disaggregation of Revenue [Line Items]
Revenues	598,215	555,030	571,426
Broadband Solutions \| Smart Infrastructure Solutions
Disaggregation of Revenue [Line Items]
Revenues	598,215	555,030	571,426
Broadband Solutions \| Automation Solutions
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Automation Solutions
Disaggregation of Revenue [Line Items]
Revenues	1,317,189	1,389,253	1,408,007
Automation Solutions \| Smart Infrastructure Solutions
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Automation Solutions \| Automation Solutions
Disaggregation of Revenue [Line Items]
Revenues	1,317,189	1,389,253	1,408,007
Smart Buildings Solutions
Disaggregation of Revenue [Line Items]
Revenues	545,575	567,801	627,052
Smart Buildings Solutions \| Smart Infrastructure Solutions
Disaggregation of Revenue [Line Items]
Revenues	545,575	567,801	627,052
Smart Buildings Solutions \| Automation Solutions
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 0	$ 0

Revenues - Schedule of Location

Revenues - Schedule of Location of Customer (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 2,460,979	$ 2,512,084	$ 2,606,485
Smart Infrastructure Solutions
Disaggregation of Revenue [Line Items]
Revenues	1,143,790	1,122,831	1,198,478
Automation Solutions
Disaggregation of Revenue [Line Items]
Revenues	1,317,189	1,389,253	1,408,007
Americas
Disaggregation of Revenue [Line Items]
Revenues	1,635,851	1,612,730	1,731,999
Americas \| Smart Infrastructure Solutions
Disaggregation of Revenue [Line Items]
Revenues	853,539	824,991	915,491
Americas \| Automation Solutions
Disaggregation of Revenue [Line Items]
Revenues	782,312	787,739	816,508
EMEA
Disaggregation of Revenue [Line Items]
Revenues	508,419	566,334	521,800
EMEA \| Smart Infrastructure Solutions
Disaggregation of Revenue [Line Items]
Revenues	173,023	180,880	149,327
EMEA \| Automation Solutions
Disaggregation of Revenue [Line Items]
Revenues	335,396	385,454	372,473
APAC
Disaggregation of Revenue [Line Items]
Revenues	316,709	333,020	352,686
APAC \| Smart Infrastructure Solutions
Disaggregation of Revenue [Line Items]
Revenues	117,228	116,960	133,660
APAC \| Automation Solutions
Disaggregation of Revenue [Line Items]
Revenues	$ 199,481	$ 216,060	$ 219,026

Revenues - Schedule of Estimate

Revenues - Schedule of Estimated and Accrued Variable Consideration (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Accrued rebates included in accrued liabilities	$ 51,063	$ 49,255
Accrued returns included in accrued liabilities	15,950	15,570
Price adjustment recognized against gross accounts receivable	$ 29,100	$ 26,005

Revenues - Additional informati

Revenues - Additional information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Contract with customer, deferred revenues	$ 40,128	$ 31,062	$ 33,243
Contract with customer, deferred revenues, current	29,781	23,718
Contract with customer, deferred revenues, noncurrent	10,300
Sales commissions	25,400	$ 24,500	$ 24,100
Service-Type Warranties
Disaggregation of Revenue [Line Items]
Contract with customer, deferred revenues	12,900
Contract with customer, deferred revenues, current	4,900
Contract with customer, deferred revenues, noncurrent	$ 8,000

Revenues - Schedule of Deferred

Revenues - Schedule of Deferred Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Change in Contract with Customer, Liability [Roll Forward]
Beginning Balance	$ 31,062	$ 33,243
New deferrals	57,133	35,157
Acquisitions		104
Revenue recognized	(48,067)	(37,442)
Ending Balance	$ 40,128	$ 31,062

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) € in Millions							1 Months Ended		12 Months Ended
	Sep. 16, 2024 USD ($)	Sep. 16, 2024 EUR (€)	Jun. 30, 2024 USD ($)	Apr. 15, 2022 USD ($)	Mar. 03, 2022 USD ($)	Jan. 17, 2022 USD ($)	Aug. 31, 2023 USD ($)	Apr. 30, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) business
Business Acquisition [Line Items]
Purchase price, net of cash acquired									$ 296,452,000	$ 106,712,000	$ 104,603,000
Number of businesses acquired \| business											3
Voleatech GmbH
Business Acquisition [Line Items]
Purchase price, net of cash acquired	$ 5,600,000	€ 5
Potential earn-out \| €		€ 3
Potential earn-out, term (in years)	3 years	3 years
Precision Optical Technologies
Business Acquisition [Line Items]
Purchase price, net of cash acquired			$ 289,600,000
Receivables			24,200,000
Tax basis in acquired goodwill			$ 0
CloudRail GmbH
Business Acquisition [Line Items]
Purchase price, net of cash acquired							$ 9,200,000
Berthold Sichert GmbH
Business Acquisition [Line Items]
Purchase price, net of cash acquired								$ 97,500,000
Receivables								5,100,000
Tax basis in acquired goodwill								$ 0
Macmon
Business Acquisition [Line Items]
Purchase price, net of cash acquired						$ 41,900,000
NetModule
Business Acquisition [Line Items]
Purchase price, net of cash acquired					$ 23,500,000
CAI
Business Acquisition [Line Items]
Purchase price, net of cash acquired				$ 19,000,000
Precision Acquisition
Business Acquisition [Line Items]
Integration costs										9,400,000
Inventory fair value adjustments										$ 300,000
Precision & Voleatech
Business Acquisition [Line Items]
Business acquisition, percentage of revenues									3%
Business acquisition, percentage of income before taxes									0.01

Acquisitions - Schedule of Reco

Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023	Apr. 30, 2023	Dec. 31, 2022
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Goodwill	$ 1,018,677		$ 907,331		$ 862,253
Precision Optical Technologies
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Receivables		$ 24,191
Inventory		7,098
Other current assets		1,486
Property, plant and equipment		5,330
Intangible assets		194,100
Goodwill		121,604
Operating lease right-of-use assets		2,731
Total assets acquired		356,540
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Accounts payable		11,662
Accrued liabilities		10,193
Deferred income taxes		42,585
Long-term operating lease liabilities		2,468
Total liabilities assumed		66,908
Net assets		$ 289,632
Berthold Sichert GmbH
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Receivables				$ 5,093
Inventory				7,590
Other current assets				2,733
Property, plant and equipment				13,135
Intangible assets				44,328
Goodwill				32,243
Deferred income taxes				433
Operating lease right-of-use assets				131
Other long-lived assets				4,559
Total assets acquired				110,245
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Accounts payable				1,907
Accrued liabilities				4,283
Deferred income taxes				6,551
Total liabilities assumed				12,741
Net assets				$ 97,504

Acquisitions - Schedule of Acqu

Acquisitions - Schedule of Acquired Intangible Assets (Details) - USD ($) $ in Thousands		1 Months Ended
	Jun. 30, 2024	Apr. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Amortization Period			19 years 6 months
Goodwill			$ 1,018,677	$ 907,331	$ 862,253
Developed technologies
Business Acquisition [Line Items]
Amortization Period			5 years
Customer relationships
Business Acquisition [Line Items]
Amortization Period			7 years 6 months
Trademarks
Business Acquisition [Line Items]
Amortization Period			7 years 3 months 18 days
Precision Optical Technologies
Business Acquisition [Line Items]
Total intangible assets subject to amortization	$ 194,100
Goodwill	121,604
Total intangible assets	$ 315,704
Weighted average amortization period	17 years 6 months
Precision Optical Technologies \| Developed technologies
Business Acquisition [Line Items]
Total intangible assets subject to amortization	$ 24,700
Amortization Period	5 years
Precision Optical Technologies \| Customer relationships
Business Acquisition [Line Items]
Total intangible assets subject to amortization	$ 161,900
Amortization Period	20 years
Precision Optical Technologies \| Trademarks
Business Acquisition [Line Items]
Total intangible assets subject to amortization	$ 3,000
Amortization Period	2 years 6 months
Precision Optical Technologies \| Non-compete agreements
Business Acquisition [Line Items]
Total intangible assets subject to amortization	$ 4,500
Amortization Period	5 years
Berthold Sichert GmbH
Business Acquisition [Line Items]
Total intangible assets subject to amortization		$ 44,328
Goodwill		32,243
Total intangible assets		$ 76,571
Weighted average amortization period		18 years 10 months 24 days
Berthold Sichert GmbH \| Customer relationships
Business Acquisition [Line Items]
Total intangible assets subject to amortization		$ 41,161
Amortization Period		20 years
Berthold Sichert GmbH \| Trademarks
Business Acquisition [Line Items]
Total intangible assets subject to amortization		$ 2,184
Amortization Period		7 years
Berthold Sichert GmbH \| Sales backlog
Business Acquisition [Line Items]
Total intangible assets subject to amortization		$ 983
Amortization Period		2 months 12 days

Acquisitions - Schedule of Pro

Acquisitions - Schedule of Pro Forma Information (Details) - Precision Acquisition - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Business Acquisition [Line Items]
Revenues	$ 2,531,820	$ 2,640,396
Net income attributable to Belden stockholders	$ 202,947	$ 232,713
Diluted income from continuing operations per share attributable to Belden common stockholders (in usd per share)	$ 4.91	$ 5.43

Disposals - Additional Informat

Disposals - Additional Information (Details) - USD ($) $ in Thousands		2 Months Ended	12 Months Ended
	Feb. 22, 2022	Feb. 22, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal of discontinued operations			$ 0	$ 0	$ 9,241
Discontinued Operations, Disposed of by Sale \| Tripwire
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses	$ 350,000
Loss on disposal of discontinued operations					$ 9,200
Capital expenditure		$ 200

Disposals - Operating Results o

Disposals - Operating Results of the Disposal Group (Details) - Tripwire - Discontinued Operations, Disposed of by Sale $ in Thousands	2 Months Ended
	Feb. 22, 2022 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues	$ 12,067
Cost of sales	(3,256)
Gross profit	8,811
Selling, general and administrative expenses	(8,185)
Research and development expenses	(5,528)
Amortization of intangible assets	(638)
Loss before taxes	$ (5,540)

Operating Segments and Geogra_3

Operating Segments and Geographic Information - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment	2
Revenues	$ 2,460,979	$ 2,512,084	$ 2,606,485
Major Customer
Segment Reporting Information [Line Items]
Revenues	348,100	378,100	$ 387,700
Accounts receivable outstanding	$ 55,900	$ 61,900
Major Customer \| Customer Concentration Risk \| Revenues
Segment Reporting Information [Line Items]
Percent of total revenues	14%	15%	15%
Major Customer \| Customer Concentration Risk \| Accounts Receivable
Segment Reporting Information [Line Items]
Percent of total revenues	14%	15%

Operating Segments and Geogra_4

Operating Segments and Geographic Information - Schedule of Operating Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Revenues	$ 2,460,979	$ 2,512,084	$ 2,606,485
Segment Cost of Sales	(1,538,757)	(1,557,118)	(1,690,196)
Segment Selling, General and Administrative Expenses	(494,603)	(492,702)	(448,636)
Segment Research and Development Expenses	(112,365)	(116,427)	(104,350)
Segment assets	3,327,938	3,240,191	3,161,675
Expenditures of property, plant and equipment	129,100	116,731	105,094
Depreciation expense	56,400	51,400	46,700
Amortization of intangibles	48,794	40,375	37,860
Severance, restructuring, and acquisition integration costs	16,820	18,654	16,470
Smart Infrastructure Solutions
Segment Reporting Information [Line Items]
Revenues	1,143,790	1,122,831	1,198,478
Severance, restructuring, and acquisition integration costs	14,211	10,128	8,130
Automation Solutions
Segment Reporting Information [Line Items]
Revenues	1,317,189	1,389,253	1,408,007
Severance, restructuring, and acquisition integration costs	2,609	8,526	8,340
Reportable Segment
Segment Reporting Information [Line Items]
Revenues	2,460,979	2,512,084	2,606,485
Segment Cost of Sales	(1,490,523)	(1,514,087)	(1,644,912)
Segment Selling, General and Administrative Expenses	(452,438)	(450,279)	(421,496)
Segment Research and Development Expenses	(109,103)	(112,706)	(102,556)
Segment EBITDA	409,858	436,435	438,596
Segment assets	1,446,976	1,364,582	1,270,888
Expenditures of property, plant and equipment	99,406	100,309	92,248
Depreciation expense	56,383	51,379	46,669
Amortization of intangibles	48,794	40,375	37,860
Amortization of software development intangible assets	10,564	7,692	3,875
Adjustments related to acquisitions and divestitures	4,764	6,177	7,833
Severance, restructuring, and acquisition integration costs	22,814	25,152	16,685
Reportable Segment \| Software Development
Segment Reporting Information [Line Items]
Amortization of software development intangible assets	10,564	7,692	3,875
Reportable Segment \| Affiliate Revenues
Segment Reporting Information [Line Items]
Revenues	943	1,423	1,075
Reportable Segment \| Smart Infrastructure Solutions
Segment Reporting Information [Line Items]
Revenues	1,143,790	1,122,831	1,198,478
Segment Cost of Sales	(789,272)	(774,958)	(852,231)
Segment Selling, General and Administrative Expenses	(177,414)	(171,873)	(160,802)
Segment Research and Development Expenses	(37,154)	(27,020)	(24,561)
Segment EBITDA	140,092	149,107	161,517
Segment assets	663,623	637,105	593,653
Expenditures of property, plant and equipment	33,343	36,237	33,535
Depreciation expense	26,231	24,943	23,387
Amortization of intangibles	28,642	20,085	17,595
Adjustments related to acquisitions and divestitures	3,572	5,359	5,589
Severance, restructuring, and acquisition integration costs	15,165	11,221	9,200
Reportable Segment \| Smart Infrastructure Solutions \| Software Development
Segment Reporting Information [Line Items]
Amortization of software development intangible assets	12	0	54
Reportable Segment \| Smart Infrastructure Solutions \| Affiliate Revenues
Segment Reporting Information [Line Items]
Revenues	142	127	633
Reportable Segment \| Automation Solutions
Segment Reporting Information [Line Items]
Revenues	1,317,189	1,389,253	1,408,007
Segment Cost of Sales	(701,251)	(739,129)	(792,681)
Segment Selling, General and Administrative Expenses	(275,024)	(278,406)	(260,694)
Segment Research and Development Expenses	(71,949)	(85,686)	(77,995)
Segment EBITDA	269,766	287,328	277,079
Segment assets	783,353	727,477	677,235
Expenditures of property, plant and equipment	66,063	64,072	58,713
Depreciation expense	30,152	26,436	23,282
Amortization of intangibles	20,152	20,290	20,265
Adjustments related to acquisitions and divestitures	1,192	818	2,244
Severance, restructuring, and acquisition integration costs	7,649	13,931	7,485
Reportable Segment \| Automation Solutions \| Software Development
Segment Reporting Information [Line Items]
Amortization of software development intangible assets	10,552	7,692	3,821
Reportable Segment \| Automation Solutions \| Affiliate Revenues
Segment Reporting Information [Line Items]
Revenues	$ 801	$ 1,296	$ 442

Operating Segments and Geogra_5

Operating Segments and Geographic Information - Reconciliation of Total Reportable Segments' Revenues and EBITDA to Consolidated Revenues and Consolidated Income Before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment and consolidated revenues	$ 2,460,979	$ 2,512,084	$ 2,606,485
Depreciation expense	(56,400)	(51,400)	(46,700)
Amortization of intangibles	(48,794)	(40,375)	(37,860)
Severance, restructuring, and acquisition integration costs	(16,820)	(18,654)	(16,470)
Gain on sale of assets	0	12,056	37,891
Consolidated operating income	266,460	317,518	363,334
Interest expense, net	(38,303)	(33,625)	(43,554)
Loss on debt extinguishment	0	0	(6,392)
Non-operating pension benefit (cost)	(215)	1,863	4,005
Consolidated income from continuing operations before taxes	227,942	285,756	317,393
Proceeds from sale of real estate			42,200
Gain on sale of real estate			37,900
Reportable Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment and consolidated revenues	2,460,979	2,512,084	2,606,485
Total Segment EBITDA	409,858	436,435	438,596
Depreciation expense	(56,383)	(51,379)	(46,669)
Amortization of intangibles	(48,794)	(40,375)	(37,860)
Severance, restructuring, and acquisition integration costs	(22,814)	(25,152)	(16,685)
Amortization of software development intangible assets	(10,564)	(7,692)	(3,875)
Adjustments related to acquisitions and divestitures	(4,764)	(6,177)	(7,833)
Gain on sale of assets	0	12,056	37,891
Proceeds from sale of real estate		13,800	42,200
Gain on sale of real estate		12,100	37,900
Eliminations
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Consolidated operating income	$ (79)	$ (198)	$ (231)

Operating Segments and Geogra_6

Operating Segments and Geographic Information - Reconciliations of Other Segment Measures to Consolidated Totals (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment assets	$ 3,327,938	$ 3,240,191	$ 3,161,675
Cash and cash equivalents	370,302	597,044	687,676
Goodwill	1,018,677	907,331	862,253
Intangible assets, less accumulated amortization	419,074	269,144	246,830
Deferred income taxes	16,353	15,739	14,642
Total expenditures of property, plant and equipment	129,100	116,731	105,094
Reportable Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment assets	1,446,976	1,364,582	1,270,888
Total expenditures of property, plant and equipment	99,406	100,309	92,248
Corporate assets
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment assets	56,556	86,351	79,386
Total expenditures of property, plant and equipment	$ 29,694	$ 16,422	$ 12,846

Operating Segments and Geogra_7

Operating Segments and Geographic Information - Schedule of Revenue from External Customers and Long-Lived Assets Based on Physical Location (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Total segment and consolidated revenues	$ 2,460,979	$ 2,512,084	$ 2,606,485
Long-lived assets	$ 559,053	$ 501,312	$ 428,367
Consolidated Revenues \| Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of total revenues	100%	100%	100%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total segment and consolidated revenues	$ 1,392,262	$ 1,383,212	$ 1,448,247
Long-lived assets	$ 290,282	$ 230,267	$ 203,070
United States \| Consolidated Revenues \| Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of total revenues	57%	55%	56%
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Total segment and consolidated revenues	$ 160,012	$ 169,122	$ 188,013
Long-lived assets	$ 13,799	$ 13,355	$ 12,805
Canada \| Consolidated Revenues \| Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of total revenues	6%	7%	7%
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Total segment and consolidated revenues	$ 92,108	$ 104,718	$ 126,904
Long-lived assets	$ 38,622	$ 45,326	$ 45,866
China \| Consolidated Revenues \| Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of total revenues	4%	4%	5%
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Total segment and consolidated revenues	$ 118,256	$ 134,130	$ 131,485
Long-lived assets	$ 62,170	$ 67,758	$ 44,061
Germany \| Consolidated Revenues \| Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of total revenues	5%	5%	5%
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Total segment and consolidated revenues	$ 698,341	$ 720,902	$ 711,836
Long-lived assets	$ 154,180	$ 144,606	$ 122,565
Other \| Consolidated Revenues \| Geographic Concentration Risk
Revenues from External Customers and Long-Lived Assets [Line Items]
Percent of total revenues	28%	29%	27%

Noncontrolling Interest (Detail

Noncontrolling Interest (Details) - Hite $ in Millions	12 Months Ended
Noncontrolling Interest (Details) - Hite $ in Millions	Dec. 31, 2023 USD ($)
Noncontrolling Interest [Line Items]
Ownership interest percentage	51%
Proceeds from sale of ownership	$ 0.9
Pre tax gain on sale	0.4
Potential earnout payment	$ 0.6

Income Per Share - Schedule of

Income Per Share - Schedule of Basis for Income Per Share Computations (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Numerator:
Income from continuing operations	$ 198,414	$ 242,556	$ 267,748
Less: Net income (loss) attributable to noncontrolling interest	(19)	(203)	159
Income from continuing operations attributable to Belden common stockholders	198,433	242,759	267,589
Add: Loss from discontinued operations, net of tax	0	0	(3,685)
Add: Loss on disposal of discontinued operations, net of tax	0	0	(9,241)
Net income attributable to Belden common stockholders	$ 198,433	$ 242,759	$ 254,663
Denominator:
Weighted average shares outstanding, basic (in shares)	40,694	42,237	43,845
Effect of dilutive common stock equivalents (in shares)	605	622	692
Weighted average shares outstanding, diluted (in shares)	41,299	42,859	44,537

Income Per Share - Additional I

Income Per Share - Additional Information (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Outstanding equity awards not included in diluted weighted average shares outstanding (in shares)	0.1	0.2	0.8
Outstanding equity awards not included in diluted weighted average shares outstanding due to performance conditions not being met (in shares)	0.1	0.3	0.2

Credit Losses (Details)

Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Credit Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 23,114	$ 7,954
Current period provision	3,198	16,167
Recoveries collected	(677)	(861)
Write-offs	(167)	(154)
Currency impact	(211)	8
Ending balance	$ 25,257	$ 23,114

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Inventory Disclosure [Abstract]
Raw materials	$ 187,530	$ 185,233
Work-in-process	40,442	41,197
Finished goods	186,237	208,425
Gross inventories	414,209	434,855
Excess and obsolete reserves	(71,110)	(67,868)
Net inventories	$ 343,099	$ 366,987

Property, Plant and Equipment -

Property, Plant and Equipment - Schedule of Carrying Values of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 1,157,655	$ 1,092,838
Accumulated depreciation	(662,030)	(641,769)
Property, plant and equipment, less accumulated depreciation	495,625	451,069
Land and land improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	24,841	27,627
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	125,292	108,960
Machinery and equipment
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	687,430	666,527
Computer equipment and software
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	145,281	132,668
Construction in process
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 174,811	$ 157,056

Property, Plant and Equipment_2

Property, Plant and Equipment - Additional Information (Details) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 CAD ($)	Dec. 31, 2022 USD ($)
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 56.4	$ 51.4		$ 46.7
Proceeds from sale of real estate				42.2
Gain on sale of real estate				$ 37.9
Canada
Property, Plant and Equipment [Line Items]
Proceeds from sale and leaseback transaction		13.8	$ 18.6
Gain (loss) on sale and leaseback transaction		$ 12.1
Sale and leaseback transaction, term of contract	10 years
Sales and leaseback transaction, right-of-use asset	$ 8.6

Leases - Additional Information

Leases - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Renewal term	15 years
Optional termination period	1 year
Variable lease, payment	$ 3,500	$ 3,100
Fixed payments remaining	20,000
Operating lease cost	27,751	22,562	$ 21,420
Liability for expected future payments	12,300	11,300
Selling, general and administrative expenses
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 3,300	$ 4,100	$ 10,100
Minimum
Lessee, Lease, Description [Line Items]
Lessee, finance lease, term	1 year
Lessee, operating lease, term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Lessee, finance lease, term	20 years
Lessee, operating lease, term	20 years

Leases - Schedule of Components

Leases - Schedule of Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease cost	$ 27,751	$ 22,562	$ 21,420
Amortization of right-of-use asset	997	780	878
Interest on lease liabilities	571	330	258
Total finance lease cost	$ 1,568	$ 1,110	$ 1,136

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Cash Flow Information Related To Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating cash flows from operating leases	$ 22,175	$ 19,080	$ 18,338

Leases - Schedule of Suppleme_2

Leases - Schedule of Supplemental Balance Sheet Information Related To Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Total operating lease right-of-use assets	$ 118,551	$ 89,686
Accrued liabilities	$ 19,437	$ 18,226
Operating lease, liability, current, statement of financial position [extensible enumeration]	Accrued liabilities	Accrued liabilities
Long-term operating lease liabilities	$ 100,049	$ 74,941
Total operating lease liabilities	119,486	93,167
Accrued liabilities	$ 12,257	$ 6,560
Finance lease, right-of-use asset, statement of financial position [extensible enumeration]	Other long-lived assets	Other long-lived assets
Accumulated depreciation	$ (2,322)	$ (1,347)
Other long-lived assets, net	9,935	5,213
Accrued liabilities	$ 1,648	$ 719
Finance lease, liability, current, statement of financial position [extensible enumeration]	Accrued liabilities	Accrued liabilities
Other long-term liabilities	$ 8,845	$ 6,084
Finance lease, liability, noncurrent, statement of financial position [extensible enumeration]	Other long-term liabilities	Other long-term liabilities
Total finance lease liabilities	$ 10,493	$ 6,803

Leases - Schedule of Suppleme_3

Leases - Schedule of Supplemental Other Information Related To Leases (Details)	Dec. 31, 2024	Dec. 31, 2023
Weighted Average Remaining Lease Term
Operating leases	10 years	6 years
Finance leases	6 years	9 years
Weighted Average Discount Rate
Operating leases	6.20%	5%
Finance leases	4.80%	4.30%

Leases - Schedule of Maturities

Leases - Schedule of Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Operating and Finance Leases
Year one	$ 28,148	$ 18,664
Year two	25,596	18,173
Year three	16,739	16,527
Year four	14,947	9,074
Year five	12,820	7,350
Thereafter	80,017	28,068
Total	$ 178,267	$ 97,856

Intangible Assets - Schedule of

Intangible Assets - Schedule of Carrying Value of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,018,677	$ 907,331	$ 862,253
Net Carrying Amount	1,018,677	907,331	862,253
Finite-lived intangible assets, Gross Carrying Amount	892,840	661,375
Finite-lived intangible assets, Accumulated Amortization	(473,766)	(419,231)
Finite-lived intangible assets, Net Carrying Amount	419,074	242,144
Indefinite-lived intangible assets, carrying amount	0	27,000
Intangible assets, Gross Carrying Amount	892,840	688,375
Intangible assets	419,074	269,144	$ 246,830
Trademarks
Intangible Assets [Line Items]
Indefinite-lived intangible assets, carrying amount	0	27,000
Developed technology
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Carrying Amount	341,303	300,240
Finite-lived intangible assets, Accumulated Amortization	(247,904)	(219,210)
Finite-lived intangible assets, Net Carrying Amount	93,399	81,030
Customer relationships
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Carrying Amount	454,298	296,616
Finite-lived intangible assets, Accumulated Amortization	(164,279)	(145,739)
Finite-lived intangible assets, Net Carrying Amount	290,019	150,877
Trademarks
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Carrying Amount	72,804	43,862
Finite-lived intangible assets, Accumulated Amortization	(41,733)	(35,089)
Finite-lived intangible assets, Net Carrying Amount	31,071	8,773
Backlog
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Carrying Amount	14,170	14,847
Finite-lived intangible assets, Accumulated Amortization	(13,705)	(13,483)
Finite-lived intangible assets, Net Carrying Amount	465	1,364
In-service research and development
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Carrying Amount	5,000	5,000
Finite-lived intangible assets, Accumulated Amortization	(5,000)	(5,000)
Finite-lived intangible assets, Net Carrying Amount	0	0
Non-compete agreements
Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Carrying Amount	5,265	810
Finite-lived intangible assets, Accumulated Amortization	(1,145)	(710)
Finite-lived intangible assets, Net Carrying Amount	$ 4,120	$ 100

Intangible Assets - Schedule _2

Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 907,331	$ 862,253
Acquisitions	123,582	38,059
Translation impact	(12,236)	7,019
Goodwill, ending balance	1,018,677	907,331
Smart Infrastructure Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	511,524	477,834
Acquisitions	120,962	32,243
Translation impact	(3,128)	1,447
Goodwill, ending balance	629,358	511,524
Automation Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	395,807	384,419
Acquisitions	2,620	5,816
Translation impact	(9,108)	5,572
Goodwill, ending balance	$ 389,319	$ 395,807

Intangible Assets - Schedule _3

Intangible Assets - Schedule of Indefinite-Lived Intangible Assets (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)
Indefinite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 27,000
Ending balance	0
Trademarks
Indefinite-lived Intangible Assets [Roll Forward]
Beginning balance	27,000
Reclassify to definite-lived	(27,000)
Ending balance	0
Trademarks \| Smart Infrastructure Solutions
Indefinite-lived Intangible Assets [Roll Forward]
Beginning balance	27,000
Reclassify to definite-lived	(27,000)
Ending balance	0
Trademarks \| Automation Solutions
Indefinite-lived Intangible Assets [Roll Forward]
Beginning balance	0
Reclassify to definite-lived	0
Ending balance	$ 0

Intangible Assets - Additional

Intangible Assets - Additional Information (Details)	12 Months Ended
Intangible Assets - Additional Information (Details)	Dec. 31, 2024 USD ($) reportingUnit	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Finite And Indefinite Lived Intangible And Other Asset [Line Items]
Number of reporting units used in qualitative assessment \| reportingUnit	6
Impairment		$ 0	$ 0
Amortization expense in income from continuing operations	$ 59,400,000	48,100,000	41,700,000
Expected annual amortization expense in 2025	61,300,000
Expected annual amortization expense in 2026	50,700,000
Expected annual amortization expense in 2027	45,900,000
Expected annual amortization expense in 2028	36,800,000
Expected annual amortization expense in 2029	$ 31,000,000
Amortization Period	19 years 6 months
Amortization of intangibles	$ 48,794,000	40,375,000	37,860,000
Trademark, net carrying amount	419,074,000	242,144,000
Indefinite-lived intangible assets, carrying amount	0	27,000,000
Trademarks
Finite And Indefinite Lived Intangible And Other Asset [Line Items]
Indefinite-lived intangible assets, carrying amount	0	27,000,000
Trademarks \| Smart Infrastructure Solutions
Finite And Indefinite Lived Intangible And Other Asset [Line Items]
Indefinite-lived intangible assets, carrying amount	$ 0	27,000,000
Customer relationships
Finite And Indefinite Lived Intangible And Other Asset [Line Items]
Amortization Period	7 years 6 months
Trademark, net carrying amount	$ 290,019,000	150,877,000
Trademarks
Finite And Indefinite Lived Intangible And Other Asset [Line Items]
Amortization Period	7 years 3 months 18 days
Trademark, net carrying amount	$ 31,071,000	8,773,000
Trademarks \| Smart Infrastructure Solutions
Finite And Indefinite Lived Intangible And Other Asset [Line Items]
Amortization Period	8 years
Amortization of intangibles	$ 3,400,000
Trademark, net carrying amount	$ 23,600,000
Developed technology
Finite And Indefinite Lived Intangible And Other Asset [Line Items]
Amortization Period	5 years
Trademark, net carrying amount	$ 93,399,000	81,030,000
Non-Compete Agreements
Finite And Indefinite Lived Intangible And Other Asset [Line Items]
Amortization Period	5 years
Backlog
Finite And Indefinite Lived Intangible And Other Asset [Line Items]
Amortization Period	5 years
Trademark, net carrying amount	$ 465,000	1,364,000
Continuing Operations
Finite And Indefinite Lived Intangible And Other Asset [Line Items]
Impairment	$ 0	$ 0	$ 0

Accrued Liabilities (Details)

Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Accrued Liabilities [Abstract]
Wages, severance and related taxes	$ 79,479	$ 71,880
Accrued rebates	51,063	49,255
Employee benefits	26,101	27,487
Deferred revenue	29,781	23,718
Lease liabilities	21,085	18,945
Accrued interest	17,628	18,774
Other (individual items less than 5% of total current liabilities)	81,843	80,230
Accrued liabilities	$ 306,980	$ 290,289

Restructuring Activities - Addi

Restructuring Activities - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	$ 16,820	$ 18,654	$ 16,470
Restructuring and integration cost payable period	60 days
Smart Infrastructure Solutions
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	$ 14,211	10,128	8,130
Automation Solutions
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	2,609	8,526	8,340
Productivity Initiative Program \| Smart Infrastructure Solutions
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	2,600	3,600
Productivity Initiative Program \| Automation Solutions
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	500	5,500
Acquisition Integration Program \| Smart Infrastructure Solutions
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	11,600	6,500	4,800
Acquisition Integration Program \| Automation Solutions
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	$ 2,100	3,000	$ 3,400
Manufacturing Footprint Program \| Smart Infrastructure Solutions
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs		3,300
Manufacturing Footprint Program \| Automation Solutions
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs		$ 5,000

Restructuring Activities - Sche

Restructuring Activities - Schedule of Severance, Restructuring and Integration Costs by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Severance	$ 1,876	$ 8,854	$ 1,563
Restructuring and Integration Costs	14,944	9,800	14,907
Total Costs	$ 16,820	18,654	16,470
RestructuringIncurredCostStatementOfIncomeOrComprehensiveIncomeExtensibleEnumerationNotDisclosedFlag	Restructuringand Integration Costs
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Total Costs	$ 15,375	15,362	6,410
Research and development expenses
Restructuring Cost and Reserve [Line Items]
Total Costs	127	1,625	0
Cost of sales
Restructuring Cost and Reserve [Line Items]
Total Costs	1,318	1,667	10,060
Smart Infrastructure Solutions
Restructuring Cost and Reserve [Line Items]
Severance	1,824	4,180	1,070
Restructuring and Integration Costs	12,387	5,948	7,060
Total Costs	14,211	10,128	8,130
Automation Solutions
Restructuring Cost and Reserve [Line Items]
Severance	52	4,674	493
Restructuring and Integration Costs	2,557	3,852	7,847
Total Costs	$ 2,609	$ 8,526	$ 8,340

Restructuring Activities - Sc_2

Restructuring Activities - Schedule of Costs of Various Programs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	$ 16,820	$ 18,654	$ 16,470
Cost of sales
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	1,318	1,667	10,060
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	15,375	15,362	6,410
Research and development expenses
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	$ 127	$ 1,625	$ 0

Restructuring Activities - Sc_3

Restructuring Activities - Schedule of Accrued Severance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restructuring Reserve [Roll Forward]
New charges	$ 16,820	$ 18,654	$ 16,470
Employee Severance
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	5,010	0
New charges	1,876	8,254
Cash payments	(1,208)	(3,151)
Foreign currency translation	(35)	68
Other adjustments	(564)	(161)
Restructuring reserve, ending balance	$ 5,079	$ 5,010	$ 0

Long-Term Debt and Other Borr_3

Long-Term Debt and Other Borrowing Arrangements - Schedule of Carrying Values of Long-Term Debt and Other Borrowing Arrangements (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,138,610	$ 1,214,950
Less unamortized debt issuance costs	(8,509)	(10,739)
Long-term debt	1,130,101	1,204,211
Line of Credit \| Revolving Credit Facility \| Revolving credit agreement due 2026
Debt Instrument [Line Items]
Long-term debt, gross	0	0
Senior Subordinated Notes \| 3.375% Senior subordinated notes due 2027
Debt Instrument [Line Items]
Long-term debt, gross	$ 465,795	497,025
Senior subordinated notes interest rate	3.375%
Senior Subordinated Notes \| 3.875% Senior subordinated notes due 2028
Debt Instrument [Line Items]
Long-term debt, gross	$ 362,285	386,575
Senior subordinated notes interest rate	3.875%
Senior Subordinated Notes \| 3.375% Senior subordinated notes due 2031
Debt Instrument [Line Items]
Long-term debt, gross	$ 310,530	$ 331,350
Senior subordinated notes interest rate	3.375%

Long-Term Debt and Other Borr_4

Long-Term Debt and Other Borrowing Arrangements - Additional Information (Details) $ in Thousands, € in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 EUR (€)	Dec. 31, 2021 USD ($)	Dec. 31, 2024 EUR (€)	Dec. 31, 2021 EUR (€)
Debt Instrument [Line Items]
Revolver borrowings outstanding	$ 1,138,610	$ 1,214,950
Senior subordinated notes	1,138,600	1,215,000
Loss on debt extinguishment	0	0	$ 6,392
3.375% Senior subordinated notes due 2027
Debt Instrument [Line Items]
Senior subordinated notes	465,800
3.875% Senior subordinated notes due 2028
Debt Instrument [Line Items]
Senior subordinated notes	362,300
Line of Credit \| Revolving Credit Facility \| Revolving credit agreement due 2026
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 300,000
Commitment fee percentage					0.25%
Fixed charge coverage, minimum threshold (as a percent)					90%
Revolver borrowings outstanding	0	0
Revolving credit agreement, available borrowing capacity	282,400
Line of Credit \| Revolving Credit Facility \| Revolving credit agreement due 2026 \| Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)					1.25%
Line of Credit \| Revolving Credit Facility \| Revolving credit agreement due 2026 \| Minimum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)					0.25%
Line of Credit \| Revolving Credit Facility \| Revolving credit agreement due 2026 \| Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)					1.75%
Revolving credit agreement, remaining borrowing capacity					$ 20,000
Line of Credit \| Revolving Credit Facility \| Revolving credit agreement due 2026 \| Maximum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)					0.75%
Senior Subordinated Notes
Debt Instrument [Line Items]
Fair value of debt instrument	1,126,600	1,141,800
Senior Subordinated Notes \| 3.375% Senior subordinated notes due 2027
Debt Instrument [Line Items]
Revolver borrowings outstanding	$ 465,795	497,025
Aggregate principal amount outstanding of senior subordinated notes \| €						€ 450
Senior subordinated notes interest rate	3.375%					3.375%
Senior Subordinated Notes \| 3.875% Senior subordinated notes due 2028
Debt Instrument [Line Items]
Revolver borrowings outstanding	$ 362,285	386,575
Aggregate principal amount outstanding of senior subordinated notes \| €						€ 350
Senior subordinated notes interest rate	3.875%					3.875%
Senior Subordinated Notes \| 3.375% Senior subordinated notes due 2031
Debt Instrument [Line Items]
Revolver borrowings outstanding	$ 310,530	$ 331,350
Aggregate principal amount outstanding of senior subordinated notes \| €						€ 300
Senior subordinated notes interest rate	3.375%					3.375%
Senior subordinated notes	$ 310,500
Senior Subordinated Notes \| 4.125% Senior Subordinated Notes Due 2026
Debt Instrument [Line Items]
Aggregate principal amount outstanding of senior subordinated notes \| €							€ 200
Senior subordinated notes interest rate					4.125%		4.125%
Repurchase amount \| €				€ 200
Repayments of debt			227,900	€ 204.1
Loss on debt extinguishment			$ 6,400

Long-Term Debt and Other Borr_5

Long-Term Debt and Other Borrowing Arrangements - Schedule of Senior Subordinated Notes (Details)	12 Months Ended
	Dec. 31, 2024
2022 \| Senior Subordinated Notes Due 2027
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	101.688%
2023 \| Senior Subordinated Notes Due 2027
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	101.125%
2023 \| Senior Subordinated Notes Due 2028
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	101.938%
2024 \| Senior Subordinated Notes Due 2027
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	100.563%
2024 \| Senior Subordinated Notes Due 2028
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	101.292%
2025 \| Senior Subordinated Notes Due 2028
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	100.646%
2026 \| Senior Subordinated Notes Due 2031
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	101.688%
2027 \| Senior Subordinated Notes Due 2031
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	100.844%
2028 \| Senior Subordinated Notes Due 2031
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	100.422%
2025 and thereafter \| Senior Subordinated Notes Due 2027
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	100%
2026 and thereafter \| Senior Subordinated Notes Due 2028
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	100%
2029 and thereafter \| Senior Subordinated Notes Due 2031
Debt Instrument [Line Items]
Redemption price as a percentage of the face amount of the notes	100%

Long-Term Debt and Other Borr_6

Long-Term Debt and Other Borrowing Arrangements - Schedule of Maturities on Outstanding Long-Term Debt and Other Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
2025	$ 0
2026	0
2027	465,795
2028	362,285
2029	0
Thereafter	310,530
Total gross debt and other borrowing arrangements	$ 1,138,610	$ 1,214,950

Net Investment Hedge (Details)

Net Investment Hedge (Details) $ in Thousands, € in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 EUR (€)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative translation adjustment	$ 29,642	$ (24,566)	$ 39,509
Senior Subordinated Notes
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Senior subordinated debt, hedged \| €				€ 567.8
Cumulative translation adjustment	$ 40,000	$ (21,500)	$ 41,900

Income Taxes - Schedule of Comp

Income Taxes - Schedule of Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income from continuing operations before taxes:
United States operations	$ 74,850	$ 86,805	$ 97,900
Foreign operations	153,092	198,951	219,493
Income from continuing operations before taxes	227,942	285,756	317,393
Currently payable
United States federal	29,589	34,091	34,310
United States state and local	1,573	3,900	4,801
Foreign	14,320	18,166	6,677
Income tax expense (benefit)	45,482	56,157	45,788
Deferred
United States federal	(6,342)	(7,497)	(446)
United States state and local	(1,041)	(623)	(50)
Foreign	(8,571)	(4,837)	4,353
Deferred Income tax expense (benefit)	(15,954)	(12,957)	3,857
Income tax expense	$ 29,528	$ 43,200	$ 49,645

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Taxes [Line Items]
Income tax benefit	$ (29,528)	$ (43,200)	$ (49,645)
Foreign tax rate differences benefit in income tax, benefit	26,400	30,100	34,400
Net operating loss carryforwards	91,976
Net tax credit carryforwards that will expire	15,085
Capital loss carryforwards	395,700
Operating loss carryforwards that will be used in expiration periods	34,800
Net tax credit carry forwards with indefinite carry forward period	2,500
Net tax credit carryforwards that expected to be utilized prior to expiry	11,800
Net increase in reserve for uncertain tax positions	8,500
Balance at end of the year of unrecognized tax benefits	15,681	7,143	6,180
Accrued payment of interest and penalties	100	$ 0
Expiring in between 2024
Income Taxes [Line Items]
Net tax credit carryforwards that will expire	100
Expiring in between 2025 and 2027
Income Taxes [Line Items]
Net operating loss carryforwards	9,100
Net tax credit carryforwards that will expire	8,500
Capital loss carryforwards	351,500
Expiring Between 2028 And 2043
Income Taxes [Line Items]
Net operating loss carryforwards	36,500
Net tax credit carryforwards that will expire	4,000
Indefinite Period
Income Taxes [Line Items]
Net operating loss carryforwards	46,400
Capital loss carryforwards	$ 44,200
Discontinued Operations
Income Taxes [Line Items]
Income tax benefit			$ 2,500

Income Taxes - Schedule of Effe

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation from Continuing Operations (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Effective income tax rate reconciliation from continuing operations:
United States federal statutory rate	21%	21%	21%
State and local income taxes	(0.20%)	0.80%	1.20%
Impact of change in tax contingencies	3.80%	0.30%	0.10%
Foreign income tax rate differences	(11.60%)	(10.50%)	(10.90%)
Impact of change in deferred tax asset valuation allowance	(0.50%)	0.50%	(2.50%)
Domestic permanent differences and tax credits	(0.50%)	2.90%	6.30%
Impact of share-based compensation	1%	0.10%	0.40%
Effective income tax rate reconciliation from continuing operations	13%	15.10%	15.60%

Income Taxes - Schedule of Co_2

Income Taxes - Schedule of Components of Deferred Income Tax Balances (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred income tax liabilities:
Plant, equipment, and intangibles	$ (136,386)	$ (98,112)
Right of use asset	(31,603)	(21,440)
Deferred tax liabilities	(167,989)	(119,552)
Deferred income tax assets:
Net operating loss, capital loss, and tax credit carryforwards	115,591	114,896
Reserves and accruals	54,085	41,474
Lease liability	32,351	22,073
Postretirement, pensions, and stock compensation	13,045	17,052
Valuation allowances	(108,064)	(109,676)
Deferred tax assets	107,008	85,819
Net deferred income tax liability	$ (60,981)	$ (33,733)

Income Taxes - Schedule of Net

Income Taxes - Schedule of Net Operating Loss Carryforwards (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	$ 91,976
United States - Federal and various states
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	39,265
Germany
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	19,369
United Kingdom
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	17,771
Other
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	8,070
Australia
Operating Loss Carryforwards [Line Items]
Net Operating Loss Carryforwards	$ 7,501

Income Taxes - Schedule of Tax

Income Taxes - Schedule of Tax Credit Carryforwards (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Tax Credit Carryforward [Line Items]
Tax Credit Carryforwards	$ 15,085
United States
Tax Credit Carryforward [Line Items]
Tax Credit Carryforwards	13,039
Belgium
Tax Credit Carryforward [Line Items]
Tax Credit Carryforwards	$ 2,046

Income Taxes - Schedule of Reco

Income Taxes - Schedule of Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year	$ 7,143	$ 6,180
Additions for tax positions of prior years	9,354	605
Additions based on tax positions related to the current year	524	358
Reduction for tax positions of prior years	(1,340)	0
Balance at end of year	$ 15,681	$ 7,143

Pension and Other Postretirem_3

Pension and Other Postretirement Benefits - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Defined contribution expense	$ 14,400	$ 14,000	$ 13,400
Accumulated benefit obligation	320,600	360,700
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Pension plans with projected benefit obligation in excess of plan assets, fair value of plan assets	142,100	281,100
Pension plans with projected benefit obligation in excess of plan assets, accumulated benefit obligation	140,200	278,400
Pension plans with projected benefit obligation in excess of plan assets, projected benefit obligation	94,000	224,000
Settlement loss (gain)	1,147	(101)	1,189
Anticipated pension and other postretirement plans contributions, next fiscal year	$ 7,600
Pension Plan, Ongoing \| Minimum \| Defined Benefit Plan, Equity Securities, Asset Protection Investments
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations	45%
Pension Plan, Ongoing \| Minimum \| Defined Benefit Plan, Equity Securities, Asset Growth Investments
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations	50%
Pension Plan, Ongoing \| Maximum \| Defined Benefit Plan, Equity Securities, Asset Protection Investments
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations	50%
Pension Plan, Ongoing \| Maximum \| Defined Benefit Plan, Equity Securities, Asset Growth Investments
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations	55%
Pension Plan, Payment Or Terminated Vested Status \| Minimum \| Defined Benefit Plan, Equity Securities, Asset Protection Investments
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations	80%
Pension Plan, Payment Or Terminated Vested Status \| Minimum \| Defined Benefit Plan, Equity Securities, Asset Growth Investments
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations	5%
Pension Plan, Payment Or Terminated Vested Status \| Maximum \| Defined Benefit Plan, Equity Securities, Asset Protection Investments
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations	95%
Pension Plan, Payment Or Terminated Vested Status \| Maximum \| Defined Benefit Plan, Equity Securities, Asset Growth Investments
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations	20%
Other Plans
Defined Benefit Plan Disclosure [Line Items]
Other postretirement plans with accumulated benefit obligation in excess of plan assets, accumulated benefit obligation	$ 19,500	21,300
Other postretirement plans with accumulated benefit obligation in excess of plan assets, fair value of plan assets	0	0
Settlement loss (gain)	0	$ 0	$ 0
Anticipated pension and other postretirement plans contributions, next fiscal year	$ 1,400

Pension and Other Postretirem_4

Pension and Other Postretirement Benefits - Schedule of Change in Benefit Obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plans
Change in benefit obligation:
Benefit obligation, beginning of year	$ (342,759)	$ (317,424)
Service cost	(3,131)	(2,632)	$ (3,491)
Interest cost	(14,759)	(15,237)	(9,248)
Participant contributions	(424)	(435)
Actuarial gain (loss)	25,815	(16,231)
Settlements	8,338	2,987
Plan amendments	104	0
Foreign currency exchange rate changes	7,681	(12,427)
Benefits paid	15,706	18,640
Benefit obligation, end of year	(303,429)	(342,759)	(317,424)
Other Plans
Change in benefit obligation:
Benefit obligation, beginning of year	(21,312)	(19,944)
Service cost	(39)	(11)	(24)
Interest cost	(949)	(1,012)	(761)
Participant contributions	(3)	(3)
Actuarial gain (loss)	(175)	(1,179)
Settlements	0	0
Plan amendments	0	0
Foreign currency exchange rate changes	1,549	(492)
Benefits paid	1,405	1,329
Benefit obligation, end of year	$ (19,524)	$ (21,312)	$ (19,944)

Pension and Other Postretirem_5

Pension and Other Postretirement Benefits - Schedule of Change in Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Change in plan assets:
Fair value of plan assets, beginning of year	$ 301,378
Fair value of plan assets, end of year	283,176	$ 301,378
Pension Plans
Change in plan assets:
Fair value of plan assets, beginning of year	301,378	281,332
Actual return on plan assets	641	21,141
Employer contributions	10,427	8,432
Plan participant contributions	424	435
Settlements	(8,292)	(2,987)
Foreign currency exchange rate changes	(5,696)	11,665
Benefits paid	(15,706)	(18,640)
Fair value of plan assets, end of year	283,176	301,378
Other Plans
Change in plan assets:
Fair value of plan assets, beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	1,402	1,326
Plan participant contributions	3	3
Settlements	0	0
Foreign currency exchange rate changes	0	0
Benefits paid	(1,405)	(1,329)
Fair value of plan assets, end of year	$ 0	$ 0

Pension and Other Postretirem_6

Pension and Other Postretirement Benefits - Schedule of Amounts Recognized in Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Amounts recognized in the balance sheets:
Accrued benefit liability, noncurrent	$ (63,260)	$ (74,573)
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Funded status, end of year	(20,253)	(41,381)
Amounts recognized in the balance sheets:
Prepaid benefit cost	27,842	16,358
Accrued benefit liability, current	(2,969)	(3,051)
Accrued benefit liability, noncurrent	(45,126)	(54,688)
Net funded status	(20,253)	(41,381)
Other Plans
Defined Benefit Plan Disclosure [Line Items]
Funded status, end of year	(19,524)	(21,312)
Amounts recognized in the balance sheets:
Prepaid benefit cost	0	0
Accrued benefit liability, current	(1,390)	(1,427)
Accrued benefit liability, noncurrent	(18,134)	(19,885)
Net funded status	$ (19,524)	$ (21,312)

Pension and Other Postretirem_7

Pension and Other Postretirement Benefits - Schedule of Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plans
Components of net periodic benefit cost:
Service cost	$ 3,131	$ 2,632	$ 3,491
Interest cost	14,759	15,237	9,248
Expected return on plan assets	(16,299)	(16,512)	(16,023)
Amortization of prior service cost	180	176	174
Settlement loss (gain)	1,147	(101)	1,189
Net loss (gain) recognition	(110)	(938)	734
Net periodic benefit cost (income)	2,808	494	(1,187)
Other Plans
Components of net periodic benefit cost:
Service cost	39	11	24
Interest cost	949	1,012	761
Expected return on plan assets	0	0	0
Amortization of prior service cost	0	0	0
Settlement loss (gain)	0	0	0
Net loss (gain) recognition	(411)	(737)	(73)
Net periodic benefit cost (income)	$ 577	$ 286	$ 712

Pension and Other Postretirem_8

Pension and Other Postretirement Benefits - Schedule of Assumptions Used in Determining Benefit Obligations and Net Periodic Benefit Cost Amounts (Details)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Pension Plans
Weighted average assumptions for benefit obligations at year end:
Discount rate	5.10%	4.50%
Salary increase	3.20%	3.20%
Cash balance interest credit rate	4.40%	4.40%
Weighted average assumptions for net periodic cost for the year:
Discount rate	4.50%	4.90%
Salary increase	3.20%	3.20%
Cash balance interest credit rate	4.40%	4.50%
Expected return on assets	5.20%	5.20%
Other Plans
Weighted average assumptions for benefit obligations at year end:
Discount rate	4.70%	4.70%
Weighted average assumptions for net periodic cost for the year:
Discount rate	4.70%	5.20%
Assumed health care cost trend rates:
Health care cost trend rate assumed for next year	5.10%	5.20%
Rate that the cost trend rate gradually declines to	4.60%	4.60%

Pension and Other Postretirem_9

Pension and Other Postretirement Benefits - Schedule of Fair Values of Pension Plan Assets by Asset Category (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	$ 283,176	$ 301,378
U.S. equities fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	40,260	34,966
Non-U.S. equities fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	37,321	35,939
Government bond fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	63,502	77,480
Corporate bond fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	62,950	62,456
Fixed income fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	20,348	22,673
Liability driven investment fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	43,354	51,412
Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	7,382	9,565
Cash and equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	8,059	6,887
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	3,404	2,662
Quoted Prices in Active Markets for Identical Assets (Level 1) \| U.S. equities fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Non-U.S. equities fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Government bond fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Corporate bond fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fixed income fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Liability driven investment fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Cash and equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	3,404	2,662
Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Significant Observable Inputs (Level 2) \| U.S. equities fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Significant Observable Inputs (Level 2) \| Non-U.S. equities fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Significant Observable Inputs (Level 2) \| Government bond fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Significant Observable Inputs (Level 2) \| Corporate bond fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Significant Observable Inputs (Level 2) \| Fixed income fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Significant Observable Inputs (Level 2) \| Liability driven investment fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Significant Observable Inputs (Level 2) \| Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Significant Observable Inputs (Level 2) \| Cash and equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	0	0
Investments Measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	279,772	298,716
Investments Measured at Net Asset Value \| U.S. equities fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	40,260	34,966
Investments Measured at Net Asset Value \| Non-U.S. equities fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	37,321	35,939
Investments Measured at Net Asset Value \| Government bond fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	63,502	77,480
Investments Measured at Net Asset Value \| Corporate bond fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	62,950	62,456
Investments Measured at Net Asset Value \| Fixed income fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	20,348	22,673
Investments Measured at Net Asset Value \| Liability driven investment fund
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	43,354	51,412
Investments Measured at Net Asset Value \| Other investments
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	7,382	9,565
Investments Measured at Net Asset Value \| Cash and equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair values of pension plan assets by asset category	$ 4,655	$ 4,225

Pension and Other Postretire_10

Pension and Other Postretirement Benefits - Schedule of Benefits Expected to be Paid in Subsequent Years from Our Pension and Other Postretirement as Well as Medicare Subsidy Receipts (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
2025	$ 20,449
2026	20,417
2027	20,756
2028	23,151
2029	22,820
2029-2033	103,486
Total	211,079
Other Plans
Defined Benefit Plan Disclosure [Line Items]
2025	1,424
2026	1,409
2027	1,401
2028	1,405
2029	1,397
2029-2033	6,892
Total	$ 13,928

Pension and Other Postretire_11

Pension and Other Postretirement Benefits - Schedule of Accumulated Other Comprehensive Loss That Have Not Been Recognized as Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	$ 13,120	$ 24,298
Net prior service cost	1,831	2,148
Total	14,951
Other Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	(4,398)	(5,322)
Net prior service cost	0	$ 0
Total	$ (4,398)

Pension and Other Postretire_12

Pension and Other Postretirement Benefits - Schedule of Changes in Accumulated Other Comprehensive Loss (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)
Pension Plans
Changes in accumulated other comprehensive loss:
Net actuarial loss (gain), beginning of year	$ 24,298
Amortization of actuarial gain	110
Actuarial loss (gain)	(25,815)
Asset loss	15,658
Settlement loss recognized	(1,147)
Currency impact	16
Net actuarial loss (gain), end of year	13,120
Prior service cost, beginning of year	2,148
Amortization of prior service cost	(180)
Prior service credit occurring during the year	(104)
Currency impact	(33)
Prior service cost, end of year	1,831
Other Plans
Changes in accumulated other comprehensive loss:
Net actuarial loss (gain), beginning of year	(5,322)
Amortization of actuarial gain	411
Actuarial loss (gain)	175
Asset loss	0
Settlement loss recognized	0
Currency impact	338
Net actuarial loss (gain), end of year	(4,398)
Prior service cost, beginning of year	0
Amortization of prior service cost	0
Prior service credit occurring during the year	0
Currency impact	0
Prior service cost, end of year	$ 0

Comprehensive Income and Accu_3

Comprehensive Income and Accumulated Other Comprehensive Income (Loss) - Schedule of Components of Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,166,257
Other comprehensive income (loss) attributable to Belden before reclassifications	38,007	$ (34,127)
Amounts reclassified from accumulated other comprehensive income	(260)	(1,281)
Net current period other comprehensive income (loss) attributable to Belden	37,747	(35,408)
Ending balance	1,294,736	1,166,257
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(41,279)	(5,871)
Ending balance	(3,532)	(41,279)
Foreign Currency Translation Component
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(26,514)	(1,944)
Other comprehensive income (loss) attributable to Belden before reclassifications	29,643	(24,431)
Amounts reclassified from accumulated other comprehensive income	0	(139)
Net current period other comprehensive income (loss) attributable to Belden	29,643	(24,570)
Ending balance	3,129	(26,514)
Pension and Other Postretirement Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(14,765)	(3,927)
Other comprehensive income (loss) attributable to Belden before reclassifications	8,364	(9,696)
Amounts reclassified from accumulated other comprehensive income	(260)	(1,142)
Net current period other comprehensive income (loss) attributable to Belden	8,104	(10,838)
Ending balance	$ (6,661)	$ (14,765)

Comprehensive Income and Accu_4

Comprehensive Income and Accumulated Other Comprehensive Income (Loss) - Schedule of Effects of Reclassifications from Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Amortization of pension and other postretirement benefit plan items:
Total before tax	$ (227,942)	$ (285,756)	$ (317,393)
Tax expense	29,528	43,200	49,645
Total net of tax	(198,433)	$ (242,759)	$ (254,663)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) \| Actuarial gains
Amortization of pension and other postretirement benefit plan items:
Other nonoperating expense (income)	(521)
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) \| Prior service cost
Amortization of pension and other postretirement benefit plan items:
Other nonoperating expense (income)	180
Amount Reclassified from Accumulated Other Comprehensive Income (Loss) \| Pension and Other Postretirement Benefit Plans
Amortization of pension and other postretirement benefit plan items:
Total before tax	(341)
Tax expense	81
Total net of tax	$ (260)

Share-Based Compensation - Sche

Share-Based Compensation - Schedule of Income Tax Benefit Recognized for our Share-Based Compensation Arrangements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Total share-based compensation cost	$ 27,532	$ 21,024	$ 23,454
Income tax benefit	$ 6,553	$ 5,004	$ 5,582

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option to convert, number of anniversaries \| anniversary	3
Unrecognized compensation cost related to all nonvested awards \| $	$ 32.9
Unrecognized compensation cost is expected to be recognized over a weighted-average period	1 year 10 months 24 days
SARs and Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SAR's and stock options expiration period	10 years
SARs and Stock Options \| Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
SARs and Stock Options \| Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	2 years
SARs and Stock Options \| Share-Based Payment Arrangement, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Restricted Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years

Share-Based Compensation - Sc_2

Share-Based Compensation - Schedule of Fair Values for SARs and Stock Options Estimated on Grant Date Using Black-Scholes-Merton Option-Pricing Formula Which Incorporates Assumptions (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Weighted-average fair value of SARs granted (in dollars per share)		$ 39.44	$ 21.85
Total intrinsic value of SARs exercised	$ 5,696	$ 12,229	$ 4,384
Tax expense (benefit) from SARs exercised	$ (420)	$ 660	$ 678
Weighted-average fair value of restricted stock units granted (in dollars per share)	$ 89.98	$ 95.32	$ 61.61
Total fair value of restricted stock units vested	$ 14,031	$ 19,821	$ 16,830
Expected volatility	38.88%	43.45%	43%
Expected term (in years)	2 years 10 months 24 days	5 years 8 months 12 days	5 years 7 months 6 days
Risk-free rate	4.40%	4.26%	1.89%
Dividend yield	0.25%	0.23%	0.37%

Share-Based Compensation - Sc_3

Share-Based Compensation - Schedule of Share Based Compensation Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Weighted- Average Grant-Date Fair Value
Granted (in dollars per share)	$ 89.98	$ 95.32	$ 61.61
SARs and Stock Options
Number
Outstanding at beginning of period (in shares)	413
Granted (in shares)	0
Exercised or converted (in shares)	(143)
Forfeited or expired (in shares)	(7)
Outstanding at end of period (in shares)	263	413
Exercisable or convertible (in shares)	167
Weighted- Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 64.97
Granted (in dollars per share)	0
Exercised or converted (in dollars per share)	61.94
Forfeited or expired (in dollars per share)	77.60
Outstanding at end of period (in dollars per share)	66.29	$ 64.97
Exercisable or convertible (in dollars per share)	$ 60.66
Weighted- Average Remaining Contractual Term
Outstanding	6 years 6 months	6 years 7 months 6 days
Exercisable or convertible	5 years 8 months 12 days
Aggregate Intrinsic Value
Outstanding	$ 12,199	$ 6,220
Exercisable or convertible	$ 8,696
Restricted Stock Units
Number
Outstanding at beginning of period (in shares)	699
Granted (in shares)	467
Exercised or converted (in shares)	(254)
Forfeited or expired (in shares)	(21)
Outstanding at end of period (in shares)	891	699
Weighted- Average Grant-Date Fair Value
Outstanding at beginning of period (in dollars per share)	$ 71.95
Granted (in dollars per share)	89.98
Exercised or converted (in dollars per share)	55.18
Forfeited or expired (in dollars per share)	76.74
Outstanding at end of period (in dollars per share)	$ 83.35	$ 71.95

Share Repurchases (Details)

Share Repurchases (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)	1.3	2.3	2.6
Value of shares repurchased	$ 132.9	$ 192.1	$ 150
Treasury stock acquired, average cost per share (in dollars per share)	$ 100.15	$ 85.27	$ 57.95
Stock repurchase program, remaining authorized repurchase amount	$ 340
2024 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount	$ 300

Market Concentrations and Ris_2

Market Concentrations and Risks (Details) lb in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) lb	Dec. 31, 2023 USD ($)	Dec. 31, 2022
Concentration Risk [Line Items]
Total senior subordinated notes	$ 1,138.6	$ 1,215
Senior Subordinated Notes
Concentration Risk [Line Items]
Fair value of debt instrument	$ 1,126.6	$ 1,141.8
Copper
Concentration Risk [Line Items]
Committed amounts to purchase (in pounds) \| lb	3.5
Committed amounts to purchase (in usd)	$ 15
Gain (loss) on unconditional purchase obligation	$ 1.1
Workforce Subject to Collective Bargaining Arrangements \| Labor Force Concentration Risk
Concentration Risk [Line Items]
Percent of total revenues	26%
Ten Largest Customers \| Consolidated Revenues \| Customer Concentration Risk
Concentration Risk [Line Items]
Percent of total revenues	46%	44%	45%

Contingent Liabilities (Details

Contingent Liabilities (Details) $ in Millions	Dec. 31, 2024 USD ($)
Standby Letters of Credit
Line of Credit Facility [Line Items]
Loss contingency, range of possible loss, portion not accrued	$ 9.4
Surety Bonds
Line of Credit Facility [Line Items]
Loss contingency, range of possible loss, portion not accrued	6.2
Bank Guaranties
Line of Credit Facility [Line Items]
Loss contingency, range of possible loss, portion not accrued	$ 6.4

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Cash Flow Elements [Abstract]
Income tax refunds received	$ 25,785	$ 6,680	$ 16,480
Income taxes paid	(71,133)	(62,367)	(71,255)
Interest paid	$ (42,402)	$ (42,105)	$ (45,168)

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounts Receivable - Allowance for Doubtful Accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning Balance	$ 23,114	$ 7,954	$ 4,864
Charged to Costs and Expenses	3,198	16,167	6,934
Divestitures/ Acquisitions	0	0	0
Charge Offs	(167)	(154)	(3,648)
Recoveries	(677)	(861)	(121)
Currency Movement	(211)	8	(75)
Ending Balance	25,257	23,114	7,954
Inventories - Excess and Obsolete Allowances
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning Balance	67,868	45,913	45,663
Charged to Costs and Expenses	19,896	28,018	8,349
Divestitures/ Acquisitions	313	3,844	813
Charge Offs	(12,120)	(8,220)	(4,116)
Recoveries	(3,976)	(1,900)	(4,102)
Currency Movement	(871)	213	(694)
Ending Balance		67,868	45,913
Deferred Income Tax Asset - Valuation Allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning Balance	109,676	142,330	66,960
Charged to Costs and Expenses	983	2,360	12,861
Divestitures/ Acquisitions	1,303	389	73,432
Charge Offs	0	(35,085)	0
Recoveries	(3,546)	(549)	(10,333)
Currency Movement	(352)	231	(590)
Ending Balance	$ 108,064	$ 109,676	$ 142,330