Belden (BDC) 10-Q 5 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 31, 2019
Cover page.
Document Quarterly Report	true
Document Type	10-Q
Document Transition Report	false
Document Period End Date	Jun. 30, 2019
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
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity File Category	Large Accelerated Filer
Entity Small Business	false
Document Transition Report	false
Entity Shell Company	false
Title of 12(b) Security	Common stock, $0.01 par value
Trading Symbol	BDC
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		45,452,492
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000913142
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 295,243	$ 420,610
Receivables, net	451,487	465,939
Inventories, net	309,711	316,418
Other current assets	60,017	55,757
Total current assets	1,116,458	1,258,724
Property, plant and equipment, less accumulated depreciation	383,067	365,970
Operating lease right-of-use assets	84,099
Goodwill	1,607,848	1,557,653
Intangible assets, less accumulated amortization	506,706	511,093
Deferred income taxes	90,112	56,018
Other long-lived assets	34,690	29,863
Total assets	3,822,980	3,779,321
Current liabilities:
Accounts payable	266,897	352,646
Accrued liabilities	323,124	364,276
Total current liabilities	590,021	716,922
Long-term debt	1,457,571	1,463,200
Postretirement benefits	131,023	132,791
Deferred income taxes	79,224	39,943
Long-term operating lease liabilities	77,679
Other long-term liabilities	53,929	38,877
Stockholders’ equity:
Preferred stock	1	1
Common stock	503	503
Additional paid-in capital	1,143,494	1,139,395
Retained earnings	967,970	922,000
Accumulated other comprehensive loss	(62,591)	(74,907)
Treasury stock	(621,167)	(599,845)
Total Belden stockholders’ equity	1,428,210	1,387,147
Noncontrolling interests	5,323	441
Total stockholders’ equity	1,433,533	1,387,588
Total liabilities and stockholders' equity	$ 3,822,980	$ 3,779,321

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Income Statement [Abstract]
Revenues	$ 637,530	$ 668,639	$ 1,224,705	$ 1,274,204
Cost of sales	(396,507)	(411,043)	(758,954)	(786,014)
Gross profit	241,023	257,596	465,751	488,190
Selling, general and administrative expenses	(122,482)	(138,842)	(245,270)	(263,714)
Research and development expenses	(35,034)	(37,209)	(69,188)	(74,310)
Amortization of intangibles	(22,368)	(25,039)	(45,709)	(49,457)
Operating income	61,139	56,506	105,584	100,709
Interest expense, net	(14,168)	(15,088)	(28,361)	(32,066)
Non-operating pension benefit (cost)	481	(257)	1,028	(532)
Loss on debt extinguishment	0	(3,030)	0	(22,990)
Income before taxes	47,452	38,131	78,251	45,121
Income tax expense	(5,162)	(9,339)	(10,783)	(13,759)
Net income	42,290	28,792	67,468	31,362
Less: Net income (loss) attributable to noncontrolling interests	90	(77)	66	(125)
Net income attributable to Belden	42,200	28,869	67,402	31,487
Less: Preferred stock dividends	8,733	8,733	17,466	17,466
Net income attributable to Belden common stockholders	$ 33,467	$ 20,136	$ 49,936	$ 14,021
Weighted average number of common shares and equivalents:
Basic (in shares)	39,389	40,735	39,405	41,184
Diluted (in shares)	39,611	40,974	39,635	41,492
Basic income per share attributable to Belden common stockholders (in usd per share)	$ 0.85	$ 0.49	$ 1.27	$ 0.34
Diluted income per share attributable to Belden common stockholders (in usd per share)	$ 0.84	$ 0.49	$ 1.26	$ 0.34
Comprehensive income attributable to Belden	$ 25,507	$ 89,897	$ 79,718	$ 61,107
Common stock dividends declared per share (in usd per share)	$ 0.05	$ 0.05	$ 0.10	$ 0.10

Condensed Consolidated Cash Flo

Condensed Consolidated Cash Flow Statements (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018
Cash flows from operating activities:
Net income	$ 67,468	$ 31,362
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	72,739	74,072
Share-based compensation	7,594	7,868
Loss on debt extinguishment	0	22,990
Changes in operating assets and liabilities, net of the effects of currency exchange rate changes and acquired businesses:
Receivables	20,329	(12,370)
Inventories	17,351	(14,486)
Accounts payable	(91,542)	(84,689)
Accrued liabilities	(59,410)	(30,351)
Income taxes	(12,361)	(4,142)
Other assets	5,092	(17,275)
Other liabilities	(5,615)	(2,341)
Net cash provided by (used for) operating activities	21,645	(29,362)
Cash flows from investing activities:
Capital expenditures	(50,769)	(39,493)
Cash used to acquire businesses, net of cash acquired	(50,517)	(84,580)
Proceeds from disposal of tangible assets	19	1,517
Proceeds from disposal of business	0	40,171
Net cash used for investing activities	(101,267)	(82,385)
Cash flows from financing activities:
Payments under share repurchase program	(22,815)	(100,000)
Cash dividends paid	(21,448)	(22,034)
Withholding tax payments for share-based payment awards	(2,002)	(1,579)
Other	(173)	0
Payments under borrowing arrangements	0	(484,757)
Debt issuance costs paid	0	(7,469)
Redemption of Stockholders' Rights Agreement	0	(411)
Borrowings under credit arrangements	0	431,270
Net cash used for financing activities	(46,438)	(184,980)
Effect of foreign currency exchange rate changes on cash and cash equivalents	693	(2,932)
Decrease in cash and cash equivalents	(125,367)	(299,659)
Cash and cash equivalents, beginning of period	420,610	561,108
Cash and cash equivalents, end of period	$ 295,243	$ 261,449

Condensed Consolidated Stockhol

Condensed Consolidated Stockholders' Equity Statement (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Mandatory Convertible Preferred Stock	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, 2017		(52)	(50,335)			8,316
Beginning balance at Dec. 31, 2017	$ 1,434,866	$ 1	$ 503	$ 1,123,832	$ 833,610	$ (425,685)	$ (98,026)	$ 631
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,570				2,618			(48)
Other comprehensive income, net of tax	(31,392)						(31,408)	16
Exercise of stock options, net of tax withholding forfeitures	(361)			(352)		$ (9)
Exercise of stock options, net of tax withholding forfeitures (in shares)						7
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(1,142)			(1,242)		$ 100
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)						27
Share repurchase program	(75,270)					$ (75,270)
Share repurchase program (in shares)						(1,050)
Share-based compensation	3,126			3,126
Redemption of stockholders' rights agreement	(411)				(411)
Preferred stock dividends	(8,733)				(8,733)
Common stock dividends	(2,066)				(2,066)
Ending balance (in shares) at Apr. 01, 2018		(52)	(50,335)			9,332
Ending balance at Apr. 01, 2018	1,292,146	$ 1	$ 503	1,125,364	795,977	$ (500,864)	(129,434)	599
Beginning balance (in shares) at Dec. 31, 2017		(52)	(50,335)			8,316
Beginning balance at Dec. 31, 2017	1,434,866	$ 1	$ 503	1,123,832	833,610	$ (425,685)	(98,026)	631
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	31,362
Share repurchase program	$ (100,000)
Share repurchase program (in shares)	(1,400)
Redemption of stockholders' rights agreement	$ 411
Ending balance (in shares) at Jul. 01, 2018		(52)	(50,335)			9,699
Ending balance at Jul. 01, 2018	1,351,110	$ 1	$ 503	1,129,490	814,071	$ (525,054)	(68,406)	505
Beginning balance (in shares) at Apr. 01, 2018		(52)	(50,335)			9,332
Beginning balance at Apr. 01, 2018	1,292,146	$ 1	$ 503	1,125,364	795,977	$ (500,864)	(129,434)	599
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	28,792				28,869			(77)
Other comprehensive income, net of tax	61,011						61,028	(17)
Exercise of stock options, net of tax withholding forfeitures	(44)			(64)		$ 20
Exercise of stock options, net of tax withholding forfeitures (in shares)						2
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(32)			(552)		$ 520
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)						19
Share repurchase program	$ (24,730)					$ (24,730)
Share repurchase program (in shares)	(400)					(388)
Share-based compensation	$ 4,742			4,742
Preferred stock dividends	(8,733)				(8,733)
Common stock dividends	(2,042)				(2,042)
Ending balance (in shares) at Jul. 01, 2018		(52)	(50,335)			9,699
Ending balance at Jul. 01, 2018	1,351,110	$ 1	$ 503	1,129,490	814,071	$ (525,054)	(68,406)	505
Beginning balance (in shares) at Dec. 31, 2018		(52)	(50,335)			10,939
Beginning balance at Dec. 31, 2018	1,387,588	$ 1	$ 503	1,139,395	922,000	$ (599,845)	(74,907)	441
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	25,178				25,202			(24)
Other comprehensive income, net of tax	29,010						29,009	1
Exercise of stock options, net of tax withholding forfeitures	(38)			(54)		$ 16
Exercise of stock options, net of tax withholding forfeitures (in shares)						1
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(1,902)			(2,570)		$ 668
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)						58
Share-based compensation	2,216			2,216
Preferred stock dividends	(8,733)				(8,733)
Common stock dividends	(1,990)				(1,990)
Ending balance (in shares) at Mar. 31, 2019		(52)	(50,335)			10,880
Ending balance at Mar. 31, 2019	1,431,329	$ 1	$ 503	1,138,987	936,479	$ (599,161)	(45,898)	418
Beginning balance (in shares) at Dec. 31, 2018		(52)	(50,335)			10,939
Beginning balance at Dec. 31, 2018	1,387,588	$ 1	$ 503	1,139,395	922,000	$ (599,845)	(74,907)	441
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	67,468
Share repurchase program	$ (22,800)
Share repurchase program (in shares)	(400)
Redemption of stockholders' rights agreement	$ 0
Ending balance (in shares) at Jun. 30, 2019		(52)	(50,335)			11,248
Ending balance at Jun. 30, 2019	1,433,533	$ 1	$ 503	1,143,494	967,970	$ (621,167)	(62,591)	5,323
Beginning balance (in shares) at Mar. 31, 2019		(52)	(50,335)			10,880
Beginning balance at Mar. 31, 2019	1,431,329	$ 1	$ 503	1,138,987	936,479	$ (599,161)	(45,898)	418
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	42,290				42,200			90
Other comprehensive income, net of tax	(16,653)						(16,693)	40
Acquisition of business with noncontrolling interests	4,775
Exercise of stock options, net of tax withholding forfeitures	(8)			(10)		2
Conversion of restricted stock units into common stock, net of tax withholding forfeitures	(54)			(861)		$ 807
Conversion of restricted stock units into common stock, net of tax withholding forfeitures (in shares)						29
Share repurchase program	$ (22,815)					$ (22,815)
Share repurchase program (in shares)	(400)					(397)
Share-based compensation	$ 5,378			5,378
Preferred stock dividends	(8,733)				(8,733)
Common stock dividends	(1,976)				(1,976)
Ending balance (in shares) at Jun. 30, 2019		(52)	(50,335)			11,248
Ending balance at Jun. 30, 2019	$ 1,433,533	$ 1	$ 503	$ 1,143,494	$ 967,970	$ (621,167)	$ (62,591)	$ 5,323

Condensed Consolidated Stockh_2

Condensed Consolidated Stockholders' Equity Statement (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jul. 01, 2018	Apr. 01, 2018
Statement of Stockholders' Equity [Abstract]
Common stock dividends declared per share (in usd per share)	$ 0.05	$ 0.05	$ 0.05	$ 0.05
Preferred stock dividends declared per share (in usd per share)	$ 168.75	$ 168.75	$ 168.75	$ 168.75

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying Condensed Consolidated Financial Statements include Belden Inc. and all of its subsidiaries (the Company, us, we, or our). We eliminate all significant affiliate accounts and transactions in consolidation. The accompanying Condensed Consolidated Financial Statements presented as of any date other than December 31, 2018 : • Are prepared from the books and records without audit, and • Are prepared in accordance with the instructions for Form 10-Q and do not include all of the information required by accounting principles generally accepted in the United States for complete statements, but • Include all adjustments, consisting only of normal recurring adjustments, necessary for a fair presentation of the financial statements. These Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and Supplementary Data contained in our 2018 Annual Report on Form 10-K. Business Description We are a signal transmission solutions provider built around two global business platforms – Enterprise Solutions and Industrial Solutions. Our comprehensive portfolio of signal transmission solutions provides industry leading secure and reliable transmission of data, sound, and video for mission critical applications. 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, which was March 31, 2019 , the 90th day of our fiscal year 2019 . Our fiscal second and third quarters each have 91 days. The six months ended June 30, 2019 and July 1, 2018 included 181 and 182 days, respectively. 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. As of and during the three and six months ended June 30, 2019 and July 1, 2018 , we utilized Level 1 inputs to determine the fair value of cash equivalents, and we utilized Level 2 and Level 3 inputs to determine the fair value of net assets acquired in business combinations (see Note 3). We did not have any transfers between Level 1 and Level 2 fair value measurements during the six months ended June 30, 2019 and July 1, 2018 . 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 June 30, 2019 , 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. 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. We accrue environmental remediation costs based on estimates of known environmental remediation exposures developed in consultation with our environmental consultants and legal counsel. 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. 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. As of June 30, 2019 , we were party to standby letters of credit, bank guaranties, and surety bonds totaling $7.4 million , $3.6 million , and $3.3 million , respectively. 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 2. Subsequent Events We evaluated subsequent events after the balance sheet date through the financial statement issuance date for appropriate accounting and disclosure. See Note 17. Current-Year Adoption of Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases ("ASU 2016-02"), a leasing standard for both lessees and lessors that supersedes the lease requirements in Accounting Standards Codification (ASC) Topic 840, " Leases ." Under its core principle, a lessee will recognize a right-of-use (ROU) asset and lease liability on the balance sheet for nearly all leased assets, and additional disclosures are required to enable users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. Lessor accounting remains largely consistent with existing U.S. generally accepted accounting principles. We adopted ASU 2016-02 on January 1, 2019 using the permitted transition method issued in July 2018, under ASU No. 2018-11 (“ASU 2018-11”), Leases: Targeted Improvements , which provides an additional (and optional) transition method for adopting the new lease standard. Furthermore, we elected the following practical expedients and accounting policy elections upon adoption: (i) the package of practical expedients as defined in ASU 2016-02, (ii) the short-term lease accounting policy election, (iii) the practical expedient to not separate non-lease components from lease components, and (iv) the easement practical expedient, which permits an entity to continue applying its current policy for accounting for land easements that existed as of the effective date of ASU 2016-02. The adoption of ASU 2016-02 on January 1, 2019 resulted in the recognition of right-of-use assets of approximately $90.5 million and lease liabilities for operating leases of approximately $103.4 million on the Condensed Consolidated Balance Sheet, with no material impact to the Condensed Consolidated Statements of Operations or Condensed Consolidated Cash Flow Statement. The difference between the initial lease liabilities and the ROU assets is related primarily to previously existing lease liabilities. See Note 7 for further information regarding the impact of the adoption of ASU 2016-02 on the Company's financial statements. In August 2017, the FASB issued Accounting Standards Update No. ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (“ASU 2017-12”). The new guidance better aligns an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The new guidance also makes certain targeted improvements to simplify the application of hedge accounting guidance and ease the administrative burden of hedge documentation requirements and assessing hedge effectiveness. The standard is effective for fiscal years beginning after December 15, 2018. We adopted ASU 2017-12 effective January 1, 2019. The adoption had no impact on our results of operations. In February 2018, the FASB issued ASU No. 2018-02 (“ASU 2018-02”), Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income . ASU 2018-02 provides an option to allow reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017. The new guidance is effective for annual and interim periods beginning after December 15, 2018. We adopted ASU 2018-02 effective January 1, 2019, and elected to not reclassify the income tax effects of the Act from accumulated other comprehensive income to retained earnings. The adoption had no impact on our results of operations. In June 2018, the FASB issued ASU No. 2018-07 (“ASU 2018-07”), Improvements to Nonemployee Share-Based Payment Accounting . The amendments in ASU 2018-07 expand the scope of Topic 718, Compensation - Stock Compensation, to include share-based payment transactions for acquiring goods and services from non-employees, and provide that non-employee share-based payment awards be measured at their grant-date fair value and the probability of satisfying performance conditions be taken into account when non-employee share-based payment awards contain such conditions. The standard is effective for fiscal years beginning after December 15, 2018. We adopted ASU 2018-07 effective January 1, 2019. The adoption had no impact on our results of operations. In August 2018, the Securities and Exchange Commission (“SEC”) adopted the final rule under SEC Release No. 33-10532, Disclosure Update and Simplification , amending certain disclosure requirements that were redundant, duplicative, overlapping, outdated or superseded. Additionally, the amendments expanded the disclosure requirements on the analysis of stockholders' equity for interim financial statements. Under the amendments, an analysis of changes in each caption of stockholders' equity presented in the balance sheet must be provided in a note or separate statement. The analysis should present a reconciliation of the beginning balance to the ending balance of each period presented. This final rule was effective on November 5, 2018. We implemented SEC Release No. 33-10532 effective January 1, 2019, which had no impact on our results of operations. Pending Adoption of Recent Accounting Pronouncements In June 2016, the FASB issued Accounting Standards Update No. 2016-13 (“ASU 2016-13”), Financial Instruments - Credit Losses . The main provisions of ASU 2016-13 provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date, and require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The new standard will be effective for us beginning January 1, 2020. Early adoption is permitted. We are currently evaluating the impact this update will have on our consolidated financial statements and related disclosures.

Revenues

Revenues	6 Months Ended
	Jun. 30, 2019
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. The following tables present our revenues disaggregated by major product category. Cable & Connectivity Networking, Software & Security Total Revenues Three Months Ended June 30, 2019 (In thousands) Enterprise Solutions $ 268,382 $ 101,480 $ 369,862 Industrial Solutions 167,121 100,547 267,668 Total $ 435,503 $ 202,027 $ 637,530 Three Months Ended July 1, 2018 Enterprise Solutions $ 279,567 $ 117,326 $ 396,893 Industrial Solutions 172,880 98,866 271,746 Total $ 452,447 $ 216,192 $ 668,639 Six Months Ended June 30, 2019 Enterprise Solutions $ 502,053 $ 194,336 $ 696,389 Industrial Solutions 325,629 202,687 528,316 Total $ 827,682 $ 397,023 $ 1,224,705 Six Months Ended July 1, 2018 Enterprise Solutions $ 514,042 $ 231,983 $ 746,025 Industrial Solutions 335,602 192,577 528,179 Total $ 849,644 $ 424,560 $ 1,274,204 The following tables present our revenues disaggregated by geography, based on the location of the customer purchasing the product. Americas EMEA APAC Total Revenues Three Months Ended June 30, 2019 (In thousands) Enterprise Solutions $ 244,670 $ 72,932 $ 52,260 $ 369,862 Industrial Solutions 154,261 71,722 41,685 267,668 Total $ 398,931 $ 144,654 $ 93,945 $ 637,530 Three Months Ended July 1, 2018 Enterprise Solutions $ 256,191 $ 82,595 $ 58,107 $ 396,893 Industrial Solutions 155,529 73,979 42,238 271,746 Total $ 411,720 $ 156,574 $ 100,345 $ 668,639 Six Months Ended June 30, 2019 Enterprise Solutions $ 455,934 $ 140,252 $ 100,203 $ 696,389 Industrial Solutions 306,835 145,037 76,444 528,316 Total $ 762,769 $ 285,289 $ 176,647 $ 1,224,705 Six Months Ended July 1, 2018 Enterprise Solutions $ 481,474 $ 155,927 $ 108,624 $ 746,025 Industrial Solutions 305,333 146,571 76,275 528,179 Total $ 786,807 $ 302,498 $ 184,899 $ 1,274,204 The following tables present our revenues disaggregated by products, including software products, and support and services. Products Support & Services Total Revenues Three Months Ended June 30, 2019 (In thousands) Enterprise Solutions $ 350,270 $ 19,592 $ 369,862 Industrial Solutions 245,440 22,228 267,668 Total $ 595,710 $ 41,820 $ 637,530 Three Months Ended July 1, 2018 Enterprise Solutions $ 379,416 $ 17,477 $ 396,893 Industrial Solutions 248,022 23,724 271,746 Total $ 627,438 $ 41,201 $ 668,639 Six Months Ended June 30, 2019 Enterprise Solutions $ 658,129 $ 38,260 $ 696,389 Industrial Solutions 484,144 44,172 528,316 Total $ 1,142,273 $ 82,432 $ 1,224,705 Six Months Ended July 1, 2018 Enterprise Solutions $ 712,160 $ 33,865 $ 746,025 Industrial Solutions 480,075 48,104 528,179 Total $ 1,192,235 $ 81,969 $ 1,274,204 We generate revenues primarily by selling products that provide secure and reliable transmission of data, sound, and video for mission critical applications. 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 selling price and recognized when or as each performance obligation is satisfied. 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 based on the shipping terms of the arrangement. Generally, we determine relative selling price using the prices charged to customers on a standalone basis. 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. We adjust our estimate of revenue at the earlier of when the most likely amount of consideration we expect to receive changes or when the consideration becomes fixed. Adjustments to revenue for performance obligations satisfied in prior periods were not significant during the three and six months ended June 30, 2019 and July 1, 2018 . The following table presents estimated and accrued variable consideration: June 30, 2019 July 1, 2018 (in thousands) Accrued rebates $ 24,178 $ 23,586 Accrued returns 13,249 8,676 Price adjustments recognized against gross accounts receivable 29,762 26,581 Depending on the terms of an arrangement, we may defer the recognition of a portion of the consideration received because we have to satisfy a future 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 typically recognized when or as the services are performed depending on the terms of the arrangement. As of June 30, 2019 , total deferred revenue was $107.4 million , and of this amount, $94.2 million is expected to be recognized within the next twelve months, and the remaining $13.2 million is long-term and is expected to be recognized over a period greater than twelve months. The following table presents deferred revenue activity: Six Months Ended June 30, 2019 July 1, 2018 (In thousands) Beginning balance $ 113,300 $ 104,400 New deferrals 92,213 90,583 Revenue recognized (98,100 ) (98,600 ) Ending balance $ 107,413 $ 96,383 We expense sales commissions as incurred when the duration of the related revenue arrangement is one year or less. We capitalize sales commissions in other current and long-lived assets on our balance sheet 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 was $3.3 million as of June 30, 2019 and $2.3 million as of July 1, 2018 . The following table presents sales commissions that are recorded within selling, general and administrative expenses: Three Months ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (in thousands) Sales commissions $ 5,185 $ 6,332 $ 10,769 $ 12,461

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Acquisitions	Acquisitions Opterna International Corp. We acquired 100% of the shares of Opterna International Corp. (Opterna) on April 15, 2019 for a preliminary purchase price, net of cash acquired, of $61.5 million . Of the $61.5 million purchase price, $45.5 million was paid on April 15, 2019 and was funded with cash on hand. The acquisition included a potential earnout, which is based upon future Opterna financial targets through April 15, 2021. The maximum earnout consideration is $25.0 million , but based upon a third party valuation specialist using certain assumptions in a discounted cash flow model, the estimated fair value of the earnout included in the purchase price was $16.0 million . Opterna is an international fiber optics solutions business based in Sterling, Virginia, which designs and manufactures a range of complementary fiber connectivity, cabinet, and enclosure products used in optical networks. The results of Opterna have been included in our Consolidated Financial Statements from April 15, 2019, and are reported within the Enterprise Solutions segment. Certain subsidiaries of Opterna include noncontrolling interests. Because Opterna has a controlling financial interest in these subsidiaries, they are consolidated into our financial statements. The results that are attributable to the noncontrolling interest holders are presented as net income attributable to noncontrolling interests in the Condensed Consolidated Statements of Operations. An immaterial amount of Opterna's revenues are generated from transactions with the noncontrolling interests. The following table summarizes the estimated, preliminary fair values of the assets acquired and the liabilities assumed as of April 15, 2019 (in thousands): Receivables $ 5,308 Inventory 8,491 Prepaid and other current assets 566 Property, plant, and equipment 1,328 Intangible assets 26,900 Goodwill 44,973 Deferred income taxes 36 Operating lease right-to-use assets 2,204 Other long-lived assets 2,070 Total assets acquired $ 91,876 Accounts payable $ 4,847 Accrued liabilities 4,346 Long-term deferred tax liability 7,316 Long-term operating lease liability 1,923 Other long-term liabilities 7,153 Total liabilities assumed $ 25,585 Net assets $ 66,291 Noncontrolling interests 4,775 Net assets attributable to Belden $ 61,516 The above purchase price allocation is preliminary, and is subject to revision as additional information about the fair value of individual assets and liabilities becomes available. The preliminary measurement of receivables, inventories, intangible assets, goodwill, deferred income taxes, other assets and liabilities, and noncontrolling interests are subject to change. A change in the estimated fair value of the net assets acquired or noncontrolling interests will change the amount of the purchase price allocable to goodwill. 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 preliminary fair values assigned to each class of acquired assets and assumed liabilities could materially affect the results of our operations. The preliminary fair value of acquired receivables is $5.3 million , which is equivalent to its gross contractual amount. For purposes of the above allocation, we based our preliminary estimate of the fair values for the acquired inventory, intangible assets, and noncontrolling interests on valuation studies performed by a third party valuation firm. We have estimated a preliminary fair value adjustment for inventories based on the estimated selling price of the work-in-process and finished goods acquired at the closing date less the sum of the costs to complete the work-in-process, the costs of disposal, and a reasonable profit allowance for our post acquisition selling efforts. We used various valuation methods including discounted cash flows, lost income, excess earnings, and relief from royalty to estimate the preliminary fair value of the identifiable intangible assets (Level 3 valuation). Our preliminary estimate of the fair values for the noncontrolling interests were based on the comparable EBITDA multiple valuation technique (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 expansion of product offerings in the optical fiber market. 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 $ 3,500 5.0 Customer relationships 22,000 15.0 Sales backlog 900 0.5 Trademarks 500 2.0 Total intangible assets subject to amortization $ 26,900 Intangible assets not subject to amortization: Goodwill $ 44,973 n/a Total intangible assets not subject to amortization $ 44,973 Total intangible assets $ 71,873 Weighted average amortization period 13.0 years 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 of the backlog intangible asset was based on our estimate of when the ordered items would ship and control of the items transfers. The useful life for the trademarks was based on the period of time we expect to continue to go to market using the trademarks. Our consolidated revenues and consolidated income before taxes for the three and six months ended June 30, 2019 included $8.8 million and $(0.1) million , respectively, from Opterna. The income before taxes from Opterna included $0.9 million of amortization of intangible assets and $0.6 million of cost of sales related to the adjustment of acquired inventory to fair value. Consolidated net income for the three and six months ended June 30, 2019 included $0.1 million of net income attributable to noncontrolling interests of Opterna. The following table illustrates the unaudited pro forma effect on operating results as if the Opterna acquisition had been completed as of January 1, 2018. Three Months Ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands, except per share data) (Unaudited) Revenues $ 637,530 $ 675,343 $ 1,233,321 $ 1,287,431 Net income attributable to Belden common stockholders 36,045 19,977 52,531 11,664 Diluted income per share attributable to Belden common stockholders $ 0.91 $ 0.49 $ 1.33 $ 0.28 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. FutureLink We acquired the FutureLink product line and related assets from Suttle, Inc. on April 5, 2019 for a preliminary purchase price of $5 million that was funded with cash on hand. The acquisition of FutureLink allows us to offer a more complete set of fiber product offerings. The results from the acquisition of FutureLink have been included in our Condensed Consolidated Financial Statements from April 5, 2019, and are reported within the Enterprise Solutions segment. The acquisition of FutureLink was not material to our financial position or results of operations. Net-Tech Technology, Inc. We acquired 100% of the shares of Net-Tech Technology, Inc. (NT2) on April 25, 2018 for a purchase price of $8.5 million that was funded with cash on hand. NT2 is an integrator of optical passive components and network optimization products used within broadband network applications where optical backhaul is used. NT2 is located in the United States. The results of NT2 have been included in our Consolidated Financial Statements from April 25, 2018, and are reported within the Enterprise Solutions segment. The NT2 acquisition was not material to our financial position or results of operations. Snell Advanced Media We acquired 100% of the outstanding ownership interest in Snell Advanced Media (SAM) on February 8, 2018 for a purchase price, net of cash acquired, of $104.6 million . Of the $104.6 million purchase price, $75.2 million was paid on February 8, 2018 and was funded with cash on hand. The acquisition included a potential earnout, which is based upon future combined earnings of SAM and Grass Valley through December 31, 2019. The maximum earnout consideration is $31.4 million , but based upon a third party valuation specialist using certain assumptions in a discounted cash flow model, the estimated fair value of the earnout included in the purchase price was $29.3 million . We assumed debt of $19.3 million and paid it off during the first quarter of 2018. During the first quarter of 2019, we signed a settlement agreement with the sellers of SAM for claims arising over the timing of the earnout consideration outlined in the purchase agreement, and as part of the settlement, the parties agreed that the maximum earnout consideration of $31.4 million would be payable during the first quarter 2020, unless earlier payment is required as per the terms of the purchase agreement. SAM designs, manufactures, and sells innovative content production and distribution systems for the broadcast and media markets. SAM is located in the United Kingdom. The results of SAM have been included in our Consolidated Financial Statements from February 8, 2018, and are reported within the Enterprise Solutions segment. The following table summarizes the estimated fair value of the assets acquired and the liabilities assumed as of February 8, 2018 (in thousands): Receivables $ 16,551 Inventory 15,084 Prepaid and other current assets 3,799 Property, plant, and equipment 7,716 Intangible assets 51,000 Goodwill 103,466 Deferred income taxes 1,388 Other long-lived assets 3,046 Total assets acquired $ 202,050 Accounts payable $ 11,825 Accrued liabilities 25,135 Deferred revenue 8,860 Long-term debt 19,315 Postretirement benefits 31,774 Other long-term liabilities 591 Total liabilities assumed $ 97,500 Net assets $ 104,550 During 2019, we did not record any significant measurement-period adjustments. 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. The fair value of acquired receivables is $16.6 million , which is equivalent to its gross contractual amount. For purposes of the above allocation, we based our estimate of the fair values for the acquired inventory; property, plant, and equipment; intangible assets; and deferred revenue on valuation studies performed by a third party valuation firm. We have estimated a fair value adjustment for inventories based on the estimated selling price of the work-in-process and finished goods acquired at the closing date less the sum of the costs to complete the work-in-process, the costs of disposal, and a reasonable profit allowance for our post acquisition selling efforts. To determine the value of the acquired property, plant, and equipment, we used various valuation methods, including both the market approach, which considers sales prices of similar assets in similar conditions (Level 2 valuation), and the cost approach, which considers the cost to replace the asset adjusted for depreciation (Level 3 valuation). We used various valuation methods including discounted cash flows, lost income, excess earnings, and relief from royalty to estimate the fair value of the identifiable intangible assets and deferred revenue (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 expected synergies and the assembled workforce. The expected synergies for the SAM acquisition may be gained from helping broadcast and media content creators, aggregators and distributors significantly improve their effectiveness and efficiency during a period of rapid change in technology, viewer and advertiser behavior and business models. 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 $ 36,500 5.0 Customer relationships 11,000 12.0 Sales backlog 1,900 0.3 Trademarks 1,600 0.9 Total intangible assets subject to amortization $ 51,000 Intangible assets not subject to amortization: Goodwill $ 103,466 n/a Total intangible assets not subject to amortization $ 103,466 Total intangible assets $ 154,466 Weighted average amortization period 6.2 years 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 of the backlog intangible asset was based on our estimate of when the ordered items would ship. The useful life for the trademarks was based on the period of time we expect to continue to go to market using the trademarks. Our consolidated revenues and consolidated income before taxes for the three months ended July 1, 2018 include $31.1 million and $(6.6) million , respectively, from SAM. The loss before taxes from SAM included $20.3 million of severance and other restructuring costs, $2.8 million of amortization of intangible assets, and $0.7 million of cost of sales related to the adjustment of acquired inventory to fair value. Our consolidated revenues and consolidated income before taxes for the six months ended July 1, 2018 included $51.9 million and $(9.4) million , respectively, from SAM. The loss before taxes from SAM included $29.5 million of severance and other restructuring costs, $5.0 million of amortization of intangible assets, and $1.2 million of cost of sales related to the adjustment of acquired inventory to fair value. The following table illustrates the unaudited pro forma effect on operating results as if the SAM acquisition had been completed as of January 1, 2017. Three Months Ended Six Months Ended July 1, 2018 July 1, 2018 (In thousands, except per share data) (Unaudited) Revenues $ 671,441 $ 1,285,625 Net income attributable to Belden common stockholders 35,241 34,169 Diluted loss per share attributable to Belden common stockholders $ 0.86 $ 0.82 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.

Reportable Segments

Reportable Segments	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Reportable Segments	Reportable Segments We are organized around two global business platforms: Enterprise Solutions and Industrial Solutions. Each of the global business platforms represents a reportable segment. The key measures of segment profit or loss are Segment Revenues and Segment EBITDA. Segment Revenues represent non-affiliate revenues and include revenues that would have otherwise been recorded by acquired businesses as independent entities but were not recognized in our Condensed Consolidated Statements of Operations and Comprehensive Income due to the effects of purchase accounting and the associated write-down of acquired deferred revenue to fair value. Segment EBITDA excludes certain items, including depreciation expense; amortization of intangibles; asset impairment; severance, restructuring, and acquisition integration costs; purchase accounting effects related to acquisitions, such as the adjustment of acquired inventory and deferred revenue to fair value; 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. 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. Enterprise Solutions Industrial Solutions Total Segments (In thousands) As of and for the three months ended June 30, 2019 Segment revenues $ 369,862 $ 267,668 $ 637,530 Affiliate revenues 893 — 893 Segment EBITDA 53,483 47,458 100,941 Depreciation expense 7,540 4,761 12,301 Amortization of intangibles 9,320 13,048 22,368 Amortization of software development intangible assets 1,044 28 1,072 Severance, restructuring, and acquisition integration costs 3,082 — 3,082 Purchase accounting effects of acquisitions 718 — 718 Segment assets 822,402 478,894 1,301,296 As of and for the three months ended July 1, 2018 Segment revenues $ 399,695 $ 271,746 $ 671,441 Affiliate revenues 1,496 17 1,513 Segment EBITDA 70,281 53,225 123,506 Depreciation expense 7,153 4,873 12,026 Amortization of intangibles 11,809 13,230 25,039 Amortization of software development intangible assets 488 — 488 Severance, restructuring, and acquisition integration costs 22,887 2,041 24,928 Purchase accounting effects of acquisitions 1,036 — 1,036 Deferred revenue adjustments 2,802 — 2,802 Segment assets 759,334 436,885 1,196,219 As of and for the six months ended June 30, 2019 Segment revenues $ 696,389 $ 528,316 $ 1,224,705 Affiliate revenues 2,263 17 2,280 Segment EBITDA 93,041 94,917 187,958 Depreciation expense 15,273 9,748 25,021 Amortization of intangibles 19,490 26,219 45,709 Amortization of software development intangible assets 1,958 51 2,009 Severance, restructuring, and acquisition integration costs 6,860 — 6,860 Purchase accounting effects of acquisitions 2,031 — 2,031 Segment assets 822,402 478,894 1,301,296 As of and for the six months ended July 1, 2018 Segment revenues $ 750,685 $ 528,179 $ 1,278,864 Affiliate revenues 2,542 46 2,588 Segment EBITDA 127,733 99,651 227,384 Depreciation expense 14,373 9,518 23,891 Amortization of intangibles 22,979 26,478 49,457 Amortization of software development intangible assets 724 — 724 Severance, restructuring, and acquisition integration costs 37,421 7,901 45,322 Purchase accounting effects of acquisitions 1,538 — 1,538 Deferred revenue adjustments 4,660 — 4,660 Segment assets 759,334 436,885 1,196,219 The following table is a reconciliation of the total of the reportable segments’ Revenues and EBITDA to consolidated revenues and consolidated income before taxes, respectively. Three Months Ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands) Total Segment Revenues $ 637,530 $ 671,441 $ 1,224,705 $ 1,278,864 Deferred revenue adjustments (1) — (2,802 ) — (4,660 ) Consolidated Revenues $ 637,530 $ 668,639 $ 1,224,705 $ 1,274,204 Total Segment EBITDA $ 100,941 $ 123,506 $ 187,958 $ 227,384 Amortization of intangibles (22,368 ) (25,039 ) (45,709 ) (49,457 ) Depreciation expense (12,301 ) (12,026 ) (25,021 ) (23,891 ) Severance, restructuring, and acquisition integration costs (2) (3,082 ) (24,928 ) (6,860 ) (45,322 ) Purchase accounting effects related to acquisitions (3) (718 ) (1,036 ) (2,031 ) (1,538 ) Amortization of software development intangible assets (1,072 ) (488 ) (2,009 ) (724 ) Deferred revenue adjustments (1) — (2,802 ) — (4,660 ) Loss on sale of assets — — — (94 ) Eliminations (261 ) (681 ) (744 ) (989 ) Consolidated operating income 61,139 56,506 105,584 100,709 Interest expense, net (14,168 ) (15,088 ) (28,361 ) (32,066 ) Non-operating pension benefit (cost) 481 (257 ) 1,028 (532 ) Loss on debt extinguishment — (3,030 ) — (22,990 ) Consolidated income before taxes $ 47,452 $ 38,131 $ 78,251 $ 45,121 (1) Our segment results include revenues that would have been recorded by acquired businesses had they remained as independent entities. Our consolidated results do not include these revenues due to the purchase accounting effect of recording deferred revenue at fair value. See Note 3, Acquisitions , for details. (2) See Note 9, Severance, Restructuring, and Acquisition Integration Activities, for details . (3) For the three and six months ended June 30, 2019 , we recognized expenses related to the earnout consideration for the SAM acquisition, and we recognized cost of sales for the adjustment of acquired inventory to fair value related to the Opterna and FutureLink acquisitions. For the three and six months ended July 1, 2018 , we recognized cost of sales for the adjustment of acquired inventory to fair value related to the SAM and NT2 acquisitions.

Income per Share

Income per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Income per Share	Income per Share The following table presents the basis for the income per share computations: Three Months Ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands) Numerator: Net income $ 42,290 $ 28,792 $ 67,468 $ 31,362 Less: Net income (loss) attributable to noncontrolling interests 90 (77 ) 66 (125 ) Less: Preferred stock dividends 8,733 8,733 17,466 17,466 Net income attributable to Belden common stockholders $ 33,467 $ 20,136 $ 49,936 $ 14,021 Denominator: Weighted average shares outstanding, basic 39,389 40,735 39,405 41,184 Effect of dilutive common stock equivalents 222 239 230 308 Weighted average shares outstanding, diluted 39,611 40,974 39,635 41,492 For the three and six months ended June 30, 2019 , diluted weighted average shares outstanding do not include outstanding equity awards of 1.2 million and 1.1 million , respectively, because to do so would have been anti-dilutive. In addition, for the three and six months ended June 30, 2019 , diluted weighted average shares outstanding do not include outstanding equity awards of 0.3 million and 0.3 million , respectively, because the related performance conditions have not been satisfied. Furthermore, for both the three and six months ended June 30, 2019 , diluted weighted average shares outstanding do not include the impact of preferred shares that are convertible into 6.9 million common shares, because deducting the preferred stock dividends from net income was more dilutive. For the three and six months ended July 1, 2018 , diluted weighted average shares outstanding do not include outstanding equity awards of 0.9 million and 0.7 million , respectively, because to do so would have been anti-dilutive. In addition, for the three and six months ended July 1, 2018 , diluted weighted average shares outstanding do not include outstanding equity awards of 0.3 million and 0.2 million , respectively, because the related performance conditions have not been satisfied. Furthermore, for both the three and six months ended July 1, 2018 , diluted weighted average shares outstanding do not include the impact of preferred shares that are convertible into 6.9 million common shares, because deducting the preferred stock dividends from net income was more dilutive. 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.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2019
Inventory Disclosure [Abstract]
Inventories	Inventories The major classes of inventories were as follows: June 30, 2019 December 31, 2018 (In thousands) Raw materials $ 136,433 $ 146,803 Work-in-process 49,017 45,939 Finished goods 154,179 152,572 Gross inventories 339,629 345,314 Excess and obsolete reserves (29,918 ) (28,896 ) Net inventories $ 309,711 $ 316,418

Leases

Leases	6 Months Ended
	Jun. 30, 2019
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 16 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 any material residual value guarantees or material variable lease payments. 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, and for the three and six months ended June 30, 2019 , 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 each lease 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 of the lease, commencement date of the lease, local currency of the leased asset, and the credit rating of the legal entity leasing the asset. The components of lease expense were as follows: Three Months Ended Six Months Ended June 30, 2019 (In thousands) Operating lease cost $ 4,756 $ 9,742 Finance lease cost Amortization of right-of-use asset $ 43 $ 68 Interest on lease liabilities 6 10 Total finance lease cost $ 49 $ 78 Supplemental cash flow information related to leases was as follows: Three Months Ended Six Months Ended June 30, 2019 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 5,048 $ 10,136 Operating cash flows from finance leases 7 16 Financing cash flows from finance leases 100 173 Supplemental balance sheet information related to leases was as follows: June 30, 2019 (In thousands, except lease term and discount rate) Operating leases: Total operating lease right-of-use assets $ 84,099 Accrued liabilities $ 18,127 Long-term operating lease liabilities 77,679 Total operating lease liabilities $ 95,806 Finance leases: Other long-lived assets, at cost $ 938 Accumulated depreciation (576 ) Other long-lived assets, net $ 362 Weighted Average Remaining Lease Term Operating leases 7 years Finance leases 3 years Weighted Average Discount Rate Operating leases 6.9 % Finance leases 6.1 % Maturities of lease liabilities were as follows: Operating Leases Finance Leases (In thousands) 2019 $ 23,731 $ 280 2020 21,046 200 2021 17,345 86 2022 14,762 36 2023 12,062 7 Thereafter 37,937 — Total $ 126,883 $ 609
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 16 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 any material residual value guarantees or material variable lease payments. 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, and for the three and six months ended June 30, 2019 , 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 each lease 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 of the lease, commencement date of the lease, local currency of the leased asset, and the credit rating of the legal entity leasing the asset. The components of lease expense were as follows: Three Months Ended Six Months Ended June 30, 2019 (In thousands) Operating lease cost $ 4,756 $ 9,742 Finance lease cost Amortization of right-of-use asset $ 43 $ 68 Interest on lease liabilities 6 10 Total finance lease cost $ 49 $ 78 Supplemental cash flow information related to leases was as follows: Three Months Ended Six Months Ended June 30, 2019 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 5,048 $ 10,136 Operating cash flows from finance leases 7 16 Financing cash flows from finance leases 100 173 Supplemental balance sheet information related to leases was as follows: June 30, 2019 (In thousands, except lease term and discount rate) Operating leases: Total operating lease right-of-use assets $ 84,099 Accrued liabilities $ 18,127 Long-term operating lease liabilities 77,679 Total operating lease liabilities $ 95,806 Finance leases: Other long-lived assets, at cost $ 938 Accumulated depreciation (576 ) Other long-lived assets, net $ 362 Weighted Average Remaining Lease Term Operating leases 7 years Finance leases 3 years Weighted Average Discount Rate Operating leases 6.9 % Finance leases 6.1 % Maturities of lease liabilities were as follows: Operating Leases Finance Leases (In thousands) 2019 $ 23,731 $ 280 2020 21,046 200 2021 17,345 86 2022 14,762 36 2023 12,062 7 Thereafter 37,937 — Total $ 126,883 $ 609

Long-Lived Assets

Long-Lived Assets	6 Months Ended
	Jun. 30, 2019
Property, Plant and Equipment [Abstract]
Long-Lived Assets	Long-Lived Assets Depreciation and Amortization Expense We recognized depreciation expense of $12.3 million and $25.0 million in the three and six months ended June 30, 2019 , respectively. We recognized depreciation expense of $12.0 million and $23.9 million in the three and six months ended July 1, 2018 , respectively. We recognized amortization expense related to our intangible assets of $23.4 million and $47.7 million in the three and six months ended June 30, 2019 . We recognized amortization expense related to our intangible assets of $25.5 million and $50.2 million in the three and six months ended July 1, 2018

Severance, Restructuring, and A

Severance, Restructuring, and Acquisition Integration Activities	6 Months Ended
	Jun. 30, 2019
Restructuring and Related Activities [Abstract]
Severance, Restructuring, and Acquisition Integration Activities	Severance, Restructuring, and Acquisition Integration Activities Opterna and FutureLink Integration program: 2019 In 2019, we began a restructuring program to integrate Opterna and FutureLink with our existing businesses. The restructuring and integration activities are focused on achieving desired cost savings by consolidating existing and acquired facilities and other support functions. We recognized $2.5 million of severance and other restructuring costs for this program during the three and six months ended June 30, 2019 . These costs were incurred by the Enterprise Solutions segment. We expect to incur approximately $3.0 million of additional severance and restructuring costs for this program, most of which will be incurred by the end of 2019. Grass Valley and SAM Integration Program: 2018 - 2019 In 2018, we began a restructuring program to integrate SAM with Grass Valley. The restructuring and integration activities are focused on achieving desired cost savings by consolidating existing and acquired facilities and other support functions. We did not recognize severance and other restructuring costs for this program during the three months ended June 30, 2019 and we recognized $3.0 million of severance and other restructuring costs for this program during the six months ended June 30, 2019 . We recognized $20.3 million and $29.5 million of severance and other restructuring costs for this program during the three and six months ended July 1, 2018 , respectively. The costs were incurred by the Enterprise Solutions segment. We do not expect to incur any more costs for this program. Industrial Manufacturing Footprint Program: 2016 - 2018 In 2016, we began a program to consolidate our manufacturing footprint. The manufacturing consolidation was complete as of December 31, 2018. We recognized $3.9 million and $11.4 million of severance and other restructuring costs for this program during the three and six months ended July 1, 2018 . The costs were incurred by the Enterprise Solutions and Industrial Solutions segments, as the manufacturing locations involved in the program serve both platforms. The following table summarizes the costs by segment of the various programs described above as well as other immaterial programs and acquisition integration activities: Severance Other Restructuring and Integration Costs Total Costs Three Months Ended June 30, 2019 (In thousands) Enterprise Solutions $ — $ 3,082 $ 3,082 Industrial Solutions — — — Total $ — $ 3,082 $ 3,082 Three Months Ended July 1, 2018 Enterprise Solutions $ 10,872 $ 12,015 $ 22,887 Industrial Solutions 190 1,851 2,041 Total $ 11,062 $ 13,866 $ 24,928 Six Months Ended June 30, 2019 Enterprise Solutions $ 220 $ 6,640 $ 6,860 Industrial Solutions — — — Total $ 220 $ 6,640 $ 6,860 Six Months Ended July 1, 2018 Enterprise Solutions $ 11,380 $ 26,041 $ 37,421 Industrial Solutions 242 7,659 7,901 Total $ 11,622 $ 33,700 $ 45,322 The following table summarizes the costs of the various programs described above as well as other immaterial programs and acquisition integration activities by financial statement line item in the Condensed Consolidated Statement of Operations: Three Months ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands) Cost of sales $ 423 $ 7,231 $ 985 $ 16,662 Selling, general and administrative expenses 2,333 14,544 5,112 23,946 Research and development expenses 326 3,153 763 4,714 Total $ 3,082 $ 24,928 $ 6,860 $ 45,322 The other restructuring and integration costs primarily consisted of equipment transfer, costs to consolidate operating and support facilities, retention bonuses, relocation, travel, legal, and other costs. The majority of the other restructuring and integration costs related to these actions were paid as incurred or are payable within the next 60 days . There were no significant severance accrual balances as of June 30, 2019 or December 31, 2018 .

Long-Term Debt and Other Borrow

Long-Term Debt and Other Borrowing Arrangements	6 Months Ended
	Jun. 30, 2019
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 were as follows: June 30, 2019 December 31, 2018 (In thousands) Revolving credit agreement due 2022 $ — $ — Senior subordinated notes: 3.875% Senior subordinated notes due 2028 398,160 400,050 3.375% Senior subordinated notes due 2027 511,920 514,350 4.125% Senior subordinated notes due 2026 227,520 228,600 2.875% Senior subordinated notes due 2025 341,280 342,900 Total senior subordinated notes 1,478,880 1,485,900 Less unamortized debt issuance costs (21,309 ) (22,700 ) Long-term debt $ 1,457,571 $ 1,463,200 Revolving Credit Agreement due 2022 Our Revolving Credit Agreement provides a $400.0 million multi-currency asset-based revolving credit facility (the Revolver). The borrowing base under the Revolver includes eligible accounts receivable; inventory; and property, plant and equipment of certain of our subsidiaries in the U.S., Canada, Germany, and the Netherlands. The maturity date of the Revolver is May 16, 2022. Interest on outstanding borrowings is variable, based upon LIBOR or other similar indices in foreign jurisdictions, plus a spread that ranges from 1.25% - 1.75% , depending upon our leverage position. We pay a commitment fee on our available borrowing capacity of 0.25% . In the event we borrow more than 90% of our borrowing base, we are subject to a fixed charge coverage ratio covenant. As of June 30, 2019 , we had no borrowings outstanding on the Revolver, and our available borrowing capacity was $320.9 million . Senior Subordinated Notes 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 June 30, 2019 is $398.2 million . The 2028 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 2027, 2026, and 2025 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 €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 June 30, 2019 is $511.9 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 2028, 2026, and 2025 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 €200.0 million aggregate principal amount of 4.125% senior subordinated notes due 2026 (the 2026 Notes). The carrying value of the 2026 Notes as of June 30, 2019 is $227.5 million . The 2026 Notes are guaranteed on a senior subordinated basis by our current and future domestic subsidiaries. The 2026 Notes rank equal in right of payment with our senior subordinated notes due 2028, 2027, and 2025 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 April 15 and October 15 of each year. We have outstanding €300.0 million aggregate principal amount of 2.875% senior subordinated notes due 2025 (the 2025 Notes). The carrying value of the 2025 Notes as of June 30, 2019 is $341.3 million . The 2025 Notes are guaranteed on a senior subordinated basis by our current and future domestic subsidiaries. The 2025 Notes rank equal in right of payment with our senior subordinated notes due 2028, 2027, and 2026 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. Fair Value of Long-Term Debt The fair value of our senior subordinated notes as of June 30, 2019 was approximately $1,549.0 million based on quoted prices of the debt instruments in inactive markets (Level 2 valuation). This amount represents the fair value of our senior subordinated notes with a carrying value of $1,478.9 million as of June 30, 2019

Net Investment Hedge

Net Investment Hedge	6 Months Ended
	Jun. 30, 2019
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 June 30, 2019 , all 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 adjustment section of other comprehensive income. For the six months ended June 30, 2019 and July 1, 2018 , the transaction gain associated with these notes that was reported in other comprehensive income was $6.9 million and $66.5 million

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three and six months ended June 30, 2019 , we recognized income tax expense of $5.2 million and $10.8 million , respectively, representing an effective tax rate of 10.9% and 13.8% , respectively. The effective tax rates were impacted by an income tax benefit of $6.4 million as a result of changes in our estimated valuation allowance requirement related to foreign tax credits due to the restructuring of certain foreign operations. These effective rates are also reflective of the impact of more favorable statutory tax rates applied to the earnings of these foreign operations due to the restructuring efforts. For the three and six months ended July 1, 2018 , we recognized income tax expense of $9.3 million and $13.8 million , respectively, representing an effective tax rate of 24.5% and 30.5% , respectively. The effective tax rate was impacted by the following significant factors: • We recognized income tax benefit of $1.2 million in the three and six months ended July 1, 2018 due to a decrease in reserves for uncertain tax positions of prior years. • We recognized income tax expense of $1.8 million in the six months ended July 1, 2018 as a result of a change in our valuation allowance on foreign tax credits associated with our euro debt refinancing. • We also recognized income tax expense of $0.5 million in the six months ended July 1, 2018 as a result of changes in our valuation allowance for the Tax Cuts and Jobs Act (the Act). Our income tax expense and effective tax rate in future periods may be impacted by many factors, including our geographic mix of income and changes in tax laws.

Pension and Other Postretiremen

Pension and Other Postretirement Obligations	6 Months Ended
	Jun. 30, 2019
Retirement Benefits [Abstract]
Pension and Other Postretirement Obligations	Pension and Other Postretirement Obligations The following table provides the components of net periodic benefit costs for our pension and other postretirement benefit plans: Pension Obligations Other Postretirement Obligations Three Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands) Service cost $ 1,047 $ 942 $ 10 $ 13 Interest cost 2,939 1,905 270 260 Expected return on plan assets (4,020 ) (2,508 ) — — Amortization of prior service cost (credit) 40 (12 ) — — Actuarial losses (gains) 316 612 (26 ) — Net periodic benefit cost $ 322 $ 939 $ 254 $ 273 Six Months Ended Service cost $ 2,106 $ 2,075 $ 19 $ 26 Interest cost 5,948 3,781 542 524 Expected return on plan assets (8,135 ) (5,028 ) — — Amortization of prior service cost (credit) 26 (22 ) — — Actuarial losses (gains) 642 1,277 (51 ) — Net periodic benefit cost $ 587 $ 2,083 $ 510 $ 550

Comprehensive Income and Accumu

Comprehensive Income and Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Comprehensive Income and Accumulated Other Comprehensive Income (Loss)	Comprehensive Income and Accumulated Other Comprehensive Income (Loss) The following table summarizes total comprehensive income: Three Months Ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands) Net income $ 42,290 $ 28,792 $ 67,468 $ 31,362 Foreign currency translation gain (loss), net of $0.4 million, $0.6 million, $0.8 million, and $1.1 million tax, respectively (16,904 ) 60,642 11,887 28,847 Adjustments to pension and postretirement liability, net of $0.1 million, $0.2 million, $0.1 million, and $0.5 million tax, respectively 251 369 470 772 Total comprehensive income 25,637 89,803 79,825 60,981 Less: Comprehensive income (loss) attributable to noncontrolling interests 130 (94 ) 107 (126 ) Comprehensive income attributable to Belden $ 25,507 $ 89,897 $ 79,718 $ 61,107 The accumulated balances related to each component of other comprehensive income (loss), net of tax, are as follows: Foreign Currency Translation Component Pension and Other Postretirement Benefit Plans Accumulated Other Comprehensive Income (Loss) (In thousands) Balance at December 31, 2018 $ (41,882 ) $ (33,025 ) $ (74,907 ) Other comprehensive income attributable to Belden before reclassifications 11,846 — 11,846 Amounts reclassified from accumulated other comprehensive income — 470 470 Net current period other comprehensive gain attributable to Belden 11,846 470 12,316 Balance at June 30, 2019 $ (30,036 ) $ (32,555 ) $ (62,591 ) The following table summarizes the effects of reclassifications from accumulated other comprehensive income (loss) for the six months ended June 30, 2019 : Amount Reclassified from Accumulated Other Comprehensive Income Affected Line Item in the Consolidated Statements of Operations and Comprehensive Income (In thousands) Amortization of pension and other postretirement benefit plan items: Actuarial losses $ 591 (1) Prior service cost 26 (1) Total before tax 617 Tax benefit (147 ) Total net of tax $ 470 (1) The amortization of these accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit costs (see Note 13).

Preferred Stock

Preferred Stock	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Preferred Stock	Preferred Stock In 2016, we issued 5.2 million depositary shares, each of which represents 1/100th interest in a share of 6.75% Series B Mandatory Convertible Preferred Stock (the Preferred Stock), for an offering price of $100 per depositary share. Holders of the Preferred Stock may elect to convert their shares into common stock at any time prior to the mandatory conversion date. Unless earlier converted, each share of Preferred Stock will automatically convert into common stock on July 15, 2019 into between 120.46 and 132.50 shares of Belden common stock, subject to customary anti-dilution adjustments. This represents a range of 6.2 million to 6.9 million shares of Belden common stock to be issued upon conversion. The number of shares of Belden common stock issuable upon the mandatory conversion of the Preferred Stock will be determined based upon the volume-weighted average price of Belden’s common stock over the 20 day trading period beginning on, and including, the 22nd scheduled trading day prior to July 15, 2019. The net proceeds from this offering were approximately $501 million . The net proceeds are for general corporate purposes. With respect to dividend and liquidation rights, the Preferred Stock ranks senior to our common stock and junior to all of our existing and future indebtedness. During the three and six months ended June 30, 2019 , dividends on the Preferred Stock were $8.7 million and $17.5 million , respectively. During the three and six months ended July 1, 2018 , dividends on the Preferred Stock were $8.7 million and $17.5 million , respectively.

Share Repurchase

Share Repurchase	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Share Repurchase	Share Repurchase On November 29, 2018, our Board of Directors authorized a share repurchase program, which allows us to purchase up to $300.0 million of 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. The program does not have an expiration date and may be suspended at any time at the discretion of the Company. During the three and six months ended June 30, 2019 , we repurchased 0.4 million shares of our common stock under the share repurchase program for an aggregate cost of $22.8 million and an average price per share of $57.47 . During the three months ended July 1, 2018 , we repurchased 0.4 million shares of our common stock under a previous share repurchase program for an aggregate cost of $24.7 million and an average price per share of $63.75 . During the six months ended July 1, 2018 , we repurchased 1.4 million shares of our common stock under a previous share repurchase program for an aggregate cost of $100.0 million and an average price per share of $69.53 .

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 15, 2019, all outstanding 6.75% Series B Mandatory Convertible Preferred Stock (the Preferred Stock) automatically converted into shares of Belden common stock at the conversion rate of 132.50 shares of common stock per share of Preferred Stock. The conversion of the Preferred Stock resulted in the issuance of approximately 6.9 million shares of Belden common stock on the conversion date. Upon conversion, the Preferred Stock were automatically extinguished and discharged, are no longer deemed outstanding for all purposes, and delisted from trading on the New York Stock Exchange. In July 2019, we repurchased 0.5 million shares of our common stock under the share repurchase program authorized on November 29, 2018 by our Board or Directors for an aggregate cost of $27.2 million and an average price per share of $55.17 .

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying Condensed Consolidated Financial Statements include Belden Inc. and all of its subsidiaries (the Company, us, we, or our). We eliminate all significant affiliate accounts and transactions in consolidation. The accompanying Condensed Consolidated Financial Statements presented as of any date other than December 31, 2018 : • Are prepared from the books and records without audit, and • Are prepared in accordance with the instructions for Form 10-Q and do not include all of the information required by accounting principles generally accepted in the United States for complete statements, but • Include all adjustments, consisting only of normal recurring adjustments, necessary for a fair presentation of the financial statements.
Business Description	Business Description We are a signal transmission solutions provider built around two global business platforms – Enterprise Solutions and Industrial Solutions. Our comprehensive portfolio of signal transmission solutions provides industry leading secure and reliable transmission of data, sound, and video for mission critical applications.
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, which was March 31, 2019 , the 90th day of our fiscal year 2019 . Our fiscal second and third quarters each have 91 days. The six months ended June 30, 2019 and July 1, 2018 included 181 and 182 days, respectively.
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. As of and during the three and six months ended June 30, 2019 and July 1, 2018
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 June 30, 2019 , 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.
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. We accrue environmental remediation costs based on estimates of known environmental remediation exposures developed in consultation with our environmental consultants and legal counsel. 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. 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.
Revenue Recognition	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 2.
Subsequent Events	Subsequent Events
New Accounting Pronouncements	Current-Year Adoption of Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases ("ASU 2016-02"), a leasing standard for both lessees and lessors that supersedes the lease requirements in Accounting Standards Codification (ASC) Topic 840, " Leases ." Under its core principle, a lessee will recognize a right-of-use (ROU) asset and lease liability on the balance sheet for nearly all leased assets, and additional disclosures are required to enable users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. Lessor accounting remains largely consistent with existing U.S. generally accepted accounting principles. We adopted ASU 2016-02 on January 1, 2019 using the permitted transition method issued in July 2018, under ASU No. 2018-11 (“ASU 2018-11”), Leases: Targeted Improvements , which provides an additional (and optional) transition method for adopting the new lease standard. Furthermore, we elected the following practical expedients and accounting policy elections upon adoption: (i) the package of practical expedients as defined in ASU 2016-02, (ii) the short-term lease accounting policy election, (iii) the practical expedient to not separate non-lease components from lease components, and (iv) the easement practical expedient, which permits an entity to continue applying its current policy for accounting for land easements that existed as of the effective date of ASU 2016-02. The adoption of ASU 2016-02 on January 1, 2019 resulted in the recognition of right-of-use assets of approximately $90.5 million and lease liabilities for operating leases of approximately $103.4 million on the Condensed Consolidated Balance Sheet, with no material impact to the Condensed Consolidated Statements of Operations or Condensed Consolidated Cash Flow Statement. The difference between the initial lease liabilities and the ROU assets is related primarily to previously existing lease liabilities. See Note 7 for further information regarding the impact of the adoption of ASU 2016-02 on the Company's financial statements. In August 2017, the FASB issued Accounting Standards Update No. ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (“ASU 2017-12”). The new guidance better aligns an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The new guidance also makes certain targeted improvements to simplify the application of hedge accounting guidance and ease the administrative burden of hedge documentation requirements and assessing hedge effectiveness. The standard is effective for fiscal years beginning after December 15, 2018. We adopted ASU 2017-12 effective January 1, 2019. The adoption had no impact on our results of operations. In February 2018, the FASB issued ASU No. 2018-02 (“ASU 2018-02”), Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income . ASU 2018-02 provides an option to allow reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017. The new guidance is effective for annual and interim periods beginning after December 15, 2018. We adopted ASU 2018-02 effective January 1, 2019, and elected to not reclassify the income tax effects of the Act from accumulated other comprehensive income to retained earnings. The adoption had no impact on our results of operations. In June 2018, the FASB issued ASU No. 2018-07 (“ASU 2018-07”), Improvements to Nonemployee Share-Based Payment Accounting . The amendments in ASU 2018-07 expand the scope of Topic 718, Compensation - Stock Compensation, to include share-based payment transactions for acquiring goods and services from non-employees, and provide that non-employee share-based payment awards be measured at their grant-date fair value and the probability of satisfying performance conditions be taken into account when non-employee share-based payment awards contain such conditions. The standard is effective for fiscal years beginning after December 15, 2018. We adopted ASU 2018-07 effective January 1, 2019. The adoption had no impact on our results of operations. In August 2018, the Securities and Exchange Commission (“SEC”) adopted the final rule under SEC Release No. 33-10532, Disclosure Update and Simplification , amending certain disclosure requirements that were redundant, duplicative, overlapping, outdated or superseded. Additionally, the amendments expanded the disclosure requirements on the analysis of stockholders' equity for interim financial statements. Under the amendments, an analysis of changes in each caption of stockholders' equity presented in the balance sheet must be provided in a note or separate statement. The analysis should present a reconciliation of the beginning balance to the ending balance of each period presented. This final rule was effective on November 5, 2018. We implemented SEC Release No. 33-10532 effective January 1, 2019, which had no impact on our results of operations. Pending Adoption of Recent Accounting Pronouncements In June 2016, the FASB issued Accounting Standards Update No. 2016-13 (“ASU 2016-13”), Financial Instruments - Credit Losses . The main provisions of ASU 2016-13 provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date, and require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The new standard will be effective for us beginning January 1, 2020. Early adoption is permitted. We are currently evaluating the impact this update will have on our consolidated financial statements and related disclosures.

Revenues (Tables)

Revenues (Tables)	6 Months Ended
	Jun. 30, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables present our revenues disaggregated by major product category. Cable & Connectivity Networking, Software & Security Total Revenues Three Months Ended June 30, 2019 (In thousands) Enterprise Solutions $ 268,382 $ 101,480 $ 369,862 Industrial Solutions 167,121 100,547 267,668 Total $ 435,503 $ 202,027 $ 637,530 Three Months Ended July 1, 2018 Enterprise Solutions $ 279,567 $ 117,326 $ 396,893 Industrial Solutions 172,880 98,866 271,746 Total $ 452,447 $ 216,192 $ 668,639 Six Months Ended June 30, 2019 Enterprise Solutions $ 502,053 $ 194,336 $ 696,389 Industrial Solutions 325,629 202,687 528,316 Total $ 827,682 $ 397,023 $ 1,224,705 Six Months Ended July 1, 2018 Enterprise Solutions $ 514,042 $ 231,983 $ 746,025 Industrial Solutions 335,602 192,577 528,179 Total $ 849,644 $ 424,560 $ 1,274,204 The following tables present our revenues disaggregated by geography, based on the location of the customer purchasing the product. Americas EMEA APAC Total Revenues Three Months Ended June 30, 2019 (In thousands) Enterprise Solutions $ 244,670 $ 72,932 $ 52,260 $ 369,862 Industrial Solutions 154,261 71,722 41,685 267,668 Total $ 398,931 $ 144,654 $ 93,945 $ 637,530 Three Months Ended July 1, 2018 Enterprise Solutions $ 256,191 $ 82,595 $ 58,107 $ 396,893 Industrial Solutions 155,529 73,979 42,238 271,746 Total $ 411,720 $ 156,574 $ 100,345 $ 668,639 Six Months Ended June 30, 2019 Enterprise Solutions $ 455,934 $ 140,252 $ 100,203 $ 696,389 Industrial Solutions 306,835 145,037 76,444 528,316 Total $ 762,769 $ 285,289 $ 176,647 $ 1,224,705 Six Months Ended July 1, 2018 Enterprise Solutions $ 481,474 $ 155,927 $ 108,624 $ 746,025 Industrial Solutions 305,333 146,571 76,275 528,179 Total $ 786,807 $ 302,498 $ 184,899 $ 1,274,204 The following tables present our revenues disaggregated by products, including software products, and support and services. Products Support & Services Total Revenues Three Months Ended June 30, 2019 (In thousands) Enterprise Solutions $ 350,270 $ 19,592 $ 369,862 Industrial Solutions 245,440 22,228 267,668 Total $ 595,710 $ 41,820 $ 637,530 Three Months Ended July 1, 2018 Enterprise Solutions $ 379,416 $ 17,477 $ 396,893 Industrial Solutions 248,022 23,724 271,746 Total $ 627,438 $ 41,201 $ 668,639 Six Months Ended June 30, 2019 Enterprise Solutions $ 658,129 $ 38,260 $ 696,389 Industrial Solutions 484,144 44,172 528,316 Total $ 1,142,273 $ 82,432 $ 1,224,705 Six Months Ended July 1, 2018 Enterprise Solutions $ 712,160 $ 33,865 $ 746,025 Industrial Solutions 480,075 48,104 528,179 Total $ 1,192,235 $ 81,969 $ 1,274,204
Contract with Customer, Asset and Liability	The following table presents estimated and accrued variable consideration: June 30, 2019 July 1, 2018 (in thousands) Accrued rebates $ 24,178 $ 23,586 Accrued returns 13,249 8,676 Price adjustments recognized against gross accounts receivable 29,762 26,581 The following table presents deferred revenue activity: Six Months Ended June 30, 2019 July 1, 2018 (In thousands) Beginning balance $ 113,300 $ 104,400 New deferrals 92,213 90,583 Revenue recognized (98,100 ) (98,600 ) Ending balance $ 107,413 $ 96,383
Sales Commissions	Total capitalized sales commissions was $3.3 million as of June 30, 2019 and $2.3 million as of July 1, 2018 . The following table presents sales commissions that are recorded within selling, general and administrative expenses: Three Months ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (in thousands) Sales commissions $ 5,185 $ 6,332 $ 10,769 $ 12,461

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the estimated fair value of the assets acquired and the liabilities assumed as of February 8, 2018 (in thousands): Receivables $ 16,551 Inventory 15,084 Prepaid and other current assets 3,799 Property, plant, and equipment 7,716 Intangible assets 51,000 Goodwill 103,466 Deferred income taxes 1,388 Other long-lived assets 3,046 Total assets acquired $ 202,050 Accounts payable $ 11,825 Accrued liabilities 25,135 Deferred revenue 8,860 Long-term debt 19,315 Postretirement benefits 31,774 Other long-term liabilities 591 Total liabilities assumed $ 97,500 Net assets $ 104,550 Receivables $ 5,308 Inventory 8,491 Prepaid and other current assets 566 Property, plant, and equipment 1,328 Intangible assets 26,900 Goodwill 44,973 Deferred income taxes 36 Operating lease right-to-use assets 2,204 Other long-lived assets 2,070 Total assets acquired $ 91,876 Accounts payable $ 4,847 Accrued liabilities 4,346 Long-term deferred tax liability 7,316 Long-term operating lease liability 1,923 Other long-term liabilities 7,153 Total liabilities assumed $ 25,585 Net assets $ 66,291 Noncontrolling interests 4,775 Net assets attributable to Belden $ 61,516
Schedule of Acquired Intangible Assets	The goodwill is primarily attributable to expansion of product offerings in the optical fiber market. 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 $ 3,500 5.0 Customer relationships 22,000 15.0 Sales backlog 900 0.5 Trademarks 500 2.0 Total intangible assets subject to amortization $ 26,900 Intangible assets not subject to amortization: Goodwill $ 44,973 n/a Total intangible assets not subject to amortization $ 44,973 Total intangible assets $ 71,873 Weighted average amortization period 13.0 years Fair Value Amortization Period (In thousands) (In years) Intangible assets subject to amortization: Developed technologies $ 36,500 5.0 Customer relationships 11,000 12.0 Sales backlog 1,900 0.3 Trademarks 1,600 0.9 Total intangible assets subject to amortization $ 51,000 Intangible assets not subject to amortization: Goodwill $ 103,466 n/a Total intangible assets not subject to amortization $ 103,466 Total intangible assets $ 154,466 Weighted average amortization period 6.2 years
Schedule of Pro Forma Information	The following table illustrates the unaudited pro forma effect on operating results as if the SAM acquisition had been completed as of January 1, 2017. Three Months Ended Six Months Ended July 1, 2018 July 1, 2018 (In thousands, except per share data) (Unaudited) Revenues $ 671,441 $ 1,285,625 Net income attributable to Belden common stockholders 35,241 34,169 Diluted loss per share attributable to Belden common stockholders $ 0.86 $ 0.82 The following table illustrates the unaudited pro forma effect on operating results as if the Opterna acquisition had been completed as of January 1, 2018. Three Months Ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands, except per share data) (Unaudited) Revenues $ 637,530 $ 675,343 $ 1,233,321 $ 1,287,431 Net income attributable to Belden common stockholders 36,045 19,977 52,531 11,664 Diluted income per share attributable to Belden common stockholders $ 0.91 $ 0.49 $ 1.33 $ 0.28

Reportable Segments (Tables)

Reportable Segments (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Operating Segment Information	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. Enterprise Solutions Industrial Solutions Total Segments (In thousands) As of and for the three months ended June 30, 2019 Segment revenues $ 369,862 $ 267,668 $ 637,530 Affiliate revenues 893 — 893 Segment EBITDA 53,483 47,458 100,941 Depreciation expense 7,540 4,761 12,301 Amortization of intangibles 9,320 13,048 22,368 Amortization of software development intangible assets 1,044 28 1,072 Severance, restructuring, and acquisition integration costs 3,082 — 3,082 Purchase accounting effects of acquisitions 718 — 718 Segment assets 822,402 478,894 1,301,296 As of and for the three months ended July 1, 2018 Segment revenues $ 399,695 $ 271,746 $ 671,441 Affiliate revenues 1,496 17 1,513 Segment EBITDA 70,281 53,225 123,506 Depreciation expense 7,153 4,873 12,026 Amortization of intangibles 11,809 13,230 25,039 Amortization of software development intangible assets 488 — 488 Severance, restructuring, and acquisition integration costs 22,887 2,041 24,928 Purchase accounting effects of acquisitions 1,036 — 1,036 Deferred revenue adjustments 2,802 — 2,802 Segment assets 759,334 436,885 1,196,219 As of and for the six months ended June 30, 2019 Segment revenues $ 696,389 $ 528,316 $ 1,224,705 Affiliate revenues 2,263 17 2,280 Segment EBITDA 93,041 94,917 187,958 Depreciation expense 15,273 9,748 25,021 Amortization of intangibles 19,490 26,219 45,709 Amortization of software development intangible assets 1,958 51 2,009 Severance, restructuring, and acquisition integration costs 6,860 — 6,860 Purchase accounting effects of acquisitions 2,031 — 2,031 Segment assets 822,402 478,894 1,301,296 As of and for the six months ended July 1, 2018 Segment revenues $ 750,685 $ 528,179 $ 1,278,864 Affiliate revenues 2,542 46 2,588 Segment EBITDA 127,733 99,651 227,384 Depreciation expense 14,373 9,518 23,891 Amortization of intangibles 22,979 26,478 49,457 Amortization of software development intangible assets 724 — 724 Severance, restructuring, and acquisition integration costs 37,421 7,901 45,322 Purchase accounting effects of acquisitions 1,538 — 1,538 Deferred revenue adjustments 4,660 — 4,660 Segment assets 759,334 436,885 1,196,219
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 before taxes, respectively. Three Months Ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands) Total Segment Revenues $ 637,530 $ 671,441 $ 1,224,705 $ 1,278,864 Deferred revenue adjustments (1) — (2,802 ) — (4,660 ) Consolidated Revenues $ 637,530 $ 668,639 $ 1,224,705 $ 1,274,204 Total Segment EBITDA $ 100,941 $ 123,506 $ 187,958 $ 227,384 Amortization of intangibles (22,368 ) (25,039 ) (45,709 ) (49,457 ) Depreciation expense (12,301 ) (12,026 ) (25,021 ) (23,891 ) Severance, restructuring, and acquisition integration costs (2) (3,082 ) (24,928 ) (6,860 ) (45,322 ) Purchase accounting effects related to acquisitions (3) (718 ) (1,036 ) (2,031 ) (1,538 ) Amortization of software development intangible assets (1,072 ) (488 ) (2,009 ) (724 ) Deferred revenue adjustments (1) — (2,802 ) — (4,660 ) Loss on sale of assets — — — (94 ) Eliminations (261 ) (681 ) (744 ) (989 ) Consolidated operating income 61,139 56,506 105,584 100,709 Interest expense, net (14,168 ) (15,088 ) (28,361 ) (32,066 ) Non-operating pension benefit (cost) 481 (257 ) 1,028 (532 ) Loss on debt extinguishment — (3,030 ) — (22,990 ) Consolidated income before taxes $ 47,452 $ 38,131 $ 78,251 $ 45,121 (1) Our segment results include revenues that would have been recorded by acquired businesses had they remained as independent entities. Our consolidated results do not include these revenues due to the purchase accounting effect of recording deferred revenue at fair value. See Note 3, Acquisitions , for details. (2) See Note 9, Severance, Restructuring, and Acquisition Integration Activities, for details . (3) For the three and six months ended June 30, 2019 , we recognized expenses related to the earnout consideration for the SAM acquisition, and we recognized cost of sales for the adjustment of acquired inventory to fair value related to the Opterna and FutureLink acquisitions. For the three and six months ended July 1, 2018 , we recognized cost of sales for the adjustment of acquired inventory to fair value related to the SAM and NT2 acquisitions.

Income per Share (Tables)

Income per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Basis for Income Per Share Computations	The following table presents the basis for the income per share computations: Three Months Ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands) Numerator: Net income $ 42,290 $ 28,792 $ 67,468 $ 31,362 Less: Net income (loss) attributable to noncontrolling interests 90 (77 ) 66 (125 ) Less: Preferred stock dividends 8,733 8,733 17,466 17,466 Net income attributable to Belden common stockholders $ 33,467 $ 20,136 $ 49,936 $ 14,021 Denominator: Weighted average shares outstanding, basic 39,389 40,735 39,405 41,184 Effect of dilutive common stock equivalents 222 239 230 308 Weighted average shares outstanding, diluted 39,611 40,974 39,635 41,492

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2019
Inventory Disclosure [Abstract]
Major Classes of Inventories	The major classes of inventories were as follows: June 30, 2019 December 31, 2018 (In thousands) Raw materials $ 136,433 $ 146,803 Work-in-process 49,017 45,939 Finished goods 154,179 152,572 Gross inventories 339,629 345,314 Excess and obsolete reserves (29,918 ) (28,896 ) Net inventories $ 309,711 $ 316,418

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Components of Lease Expense	The components of lease expense were as follows: Three Months Ended Six Months Ended June 30, 2019 (In thousands) Operating lease cost $ 4,756 $ 9,742 Finance lease cost Amortization of right-of-use asset $ 43 $ 68 Interest on lease liabilities 6 10 Total finance lease cost $ 49 $ 78
Supplemental Cash Flow Information Related To Leases	Supplemental cash flow information related to leases was as follows: Three Months Ended Six Months Ended June 30, 2019 (In thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 5,048 $ 10,136 Operating cash flows from finance leases 7 16 Financing cash flows from finance leases 100 173
Supplemental Balance Sheet Information Related To Leases	Supplemental balance sheet information related to leases was as follows: June 30, 2019 (In thousands, except lease term and discount rate) Operating leases: Total operating lease right-of-use assets $ 84,099 Accrued liabilities $ 18,127 Long-term operating lease liabilities 77,679 Total operating lease liabilities $ 95,806 Finance leases: Other long-lived assets, at cost $ 938 Accumulated depreciation (576 ) Other long-lived assets, net $ 362
Supplemental Other Information Related To Leases	Weighted Average Remaining Lease Term Operating leases 7 years Finance leases 3 years Weighted Average Discount Rate Operating leases 6.9 % Finance leases 6.1 %
Operating Lease, Liability, Maturity	Maturities of lease liabilities were as follows: Operating Leases Finance Leases (In thousands) 2019 $ 23,731 $ 280 2020 21,046 200 2021 17,345 86 2022 14,762 36 2023 12,062 7 Thereafter 37,937 — Total $ 126,883 $ 609
Finance Lease, Liability, Maturity	Maturities of lease liabilities were as follows: Operating Leases Finance Leases (In thousands) 2019 $ 23,731 $ 280 2020 21,046 200 2021 17,345 86 2022 14,762 36 2023 12,062 7 Thereafter 37,937 — Total $ 126,883 $ 609

Severance, Restructuring, and_2

Severance, Restructuring, and Acquisition Integration Activities (Tables)	6 Months Ended
	Jun. 30, 2019
Restructuring and Related Activities [Abstract]
Severance, Restructuring and Integration Costs by Segment	The following table summarizes the costs by segment of the various programs described above as well as other immaterial programs and acquisition integration activities: Severance Other Restructuring and Integration Costs Total Costs Three Months Ended June 30, 2019 (In thousands) Enterprise Solutions $ — $ 3,082 $ 3,082 Industrial Solutions — — — Total $ — $ 3,082 $ 3,082 Three Months Ended July 1, 2018 Enterprise Solutions $ 10,872 $ 12,015 $ 22,887 Industrial Solutions 190 1,851 2,041 Total $ 11,062 $ 13,866 $ 24,928 Six Months Ended June 30, 2019 Enterprise Solutions $ 220 $ 6,640 $ 6,860 Industrial Solutions — — — Total $ 220 $ 6,640 $ 6,860 Six Months Ended July 1, 2018 Enterprise Solutions $ 11,380 $ 26,041 $ 37,421 Industrial Solutions 242 7,659 7,901 Total $ 11,622 $ 33,700 $ 45,322 The following table summarizes the costs of the various programs described above as well as other immaterial programs and acquisition integration activities by financial statement line item in the Condensed Consolidated Statement of Operations: Three Months ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands) Cost of sales $ 423 $ 7,231 $ 985 $ 16,662 Selling, general and administrative expenses 2,333 14,544 5,112 23,946 Research and development expenses 326 3,153 763 4,714 Total $ 3,082 $ 24,928 $ 6,860 $ 45,322

Long-Term Debt and Other Borr_2

Long-Term Debt and Other Borrowing Arrangements (Tables)	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Carrying Values of Long-Term Debt and Other Borrowing Arrangements	The carrying values of our long-term debt were as follows: June 30, 2019 December 31, 2018 (In thousands) Revolving credit agreement due 2022 $ — $ — Senior subordinated notes: 3.875% Senior subordinated notes due 2028 398,160 400,050 3.375% Senior subordinated notes due 2027 511,920 514,350 4.125% Senior subordinated notes due 2026 227,520 228,600 2.875% Senior subordinated notes due 2025 341,280 342,900 Total senior subordinated notes 1,478,880 1,485,900 Less unamortized debt issuance costs (21,309 ) (22,700 ) Long-term debt $ 1,457,571 $ 1,463,200

Pension and Other Postretirem_2

Pension and Other Postretirement Obligations (Tables)	6 Months Ended
	Jun. 30, 2019
Retirement Benefits [Abstract]
Components of Net Periodic Benefit Costs	The following table provides the components of net periodic benefit costs for our pension and other postretirement benefit plans: Pension Obligations Other Postretirement Obligations Three Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands) Service cost $ 1,047 $ 942 $ 10 $ 13 Interest cost 2,939 1,905 270 260 Expected return on plan assets (4,020 ) (2,508 ) — — Amortization of prior service cost (credit) 40 (12 ) — — Actuarial losses (gains) 316 612 (26 ) — Net periodic benefit cost $ 322 $ 939 $ 254 $ 273 Six Months Ended Service cost $ 2,106 $ 2,075 $ 19 $ 26 Interest cost 5,948 3,781 542 524 Expected return on plan assets (8,135 ) (5,028 ) — — Amortization of prior service cost (credit) 26 (22 ) — — Actuarial losses (gains) 642 1,277 (51 ) — Net periodic benefit cost $ 587 $ 2,083 $ 510 $ 550

Comprehensive Income and Accu_2

Comprehensive Income and Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Total Comprehensive Income (Loss)	The following table summarizes total comprehensive income: Three Months Ended Six Months Ended June 30, 2019 July 1, 2018 June 30, 2019 July 1, 2018 (In thousands) Net income $ 42,290 $ 28,792 $ 67,468 $ 31,362 Foreign currency translation gain (loss), net of $0.4 million, $0.6 million, $0.8 million, and $1.1 million tax, respectively (16,904 ) 60,642 11,887 28,847 Adjustments to pension and postretirement liability, net of $0.1 million, $0.2 million, $0.1 million, and $0.5 million tax, respectively 251 369 470 772 Total comprehensive income 25,637 89,803 79,825 60,981 Less: Comprehensive income (loss) attributable to noncontrolling interests 130 (94 ) 107 (126 ) Comprehensive income attributable to Belden $ 25,507 $ 89,897 $ 79,718 $ 61,107
Components of Other Comprehensive Income (Loss), Net of Tax	The accumulated balances related to each component of other comprehensive income (loss), net of tax, are as follows: Foreign Currency Translation Component Pension and Other Postretirement Benefit Plans Accumulated Other Comprehensive Income (Loss) (In thousands) Balance at December 31, 2018 $ (41,882 ) $ (33,025 ) $ (74,907 ) Other comprehensive income attributable to Belden before reclassifications 11,846 — 11,846 Amounts reclassified from accumulated other comprehensive income — 470 470 Net current period other comprehensive gain attributable to Belden 11,846 470 12,316 Balance at June 30, 2019 $ (30,036 ) $ (32,555 ) $ (62,591 )
Summary of Effects of Reclassifications from Accumulated Other Comprehensive Income (Loss)	The following table summarizes the effects of reclassifications from accumulated other comprehensive income (loss) for the six months ended June 30, 2019 : Amount Reclassified from Accumulated Other Comprehensive Income Affected Line Item in the Consolidated Statements of Operations and Comprehensive Income (In thousands) Amortization of pension and other postretirement benefit plan items: Actuarial losses $ 591 (1) Prior service cost 26 (1) Total before tax 617 Tax benefit (147 ) Total net of tax $ 470 (1) The amortization of these accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit costs (see Note 13).

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)Segment	Jun. 30, 2019USD ($)segment	Jan. 01, 2019USD ($)
Significant Accounting Policies [Line Items]
Number of global business platforms	2	2
Operating lease right-of-use assets	$ 84,099	$ 84,099
Operating lease liability	95,806	95,806
Standby Letters of Credit
Significant Accounting Policies [Line Items]
Loss contingency, range of possible loss, portion not accrued	7,400	7,400
Bank Guaranties
Significant Accounting Policies [Line Items]
Loss contingency, range of possible loss, portion not accrued	3,600	3,600
Surety Bonds
Significant Accounting Policies [Line Items]
Loss contingency, range of possible loss, portion not accrued	$ 3,300	$ 3,300
Accounting Standards Update 2016-02
Significant Accounting Policies [Line Items]
Operating lease right-of-use assets			$ 90,500
Operating lease liability			$ 103,400

Revenues - Major Product Catego

Revenues - Major Product Category (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 637,530	$ 668,639	$ 1,224,705	$ 1,274,204
Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	369,862	396,893	696,389	746,025
Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	267,668	271,746	528,316	528,179
Cable & Connectivity
Disaggregation of Revenue [Line Items]
Revenues	435,503	452,447	827,682	849,644
Cable & Connectivity | Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	268,382	279,567	502,053	514,042
Cable & Connectivity | Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	167,121	172,880	325,629	335,602
Networking, Software & Security
Disaggregation of Revenue [Line Items]
Revenues	202,027	216,192	397,023	424,560
Networking, Software & Security | Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	101,480	117,326	194,336	231,983
Networking, Software & Security | Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	$ 100,547	$ 98,866	$ 202,687	$ 192,577

Revenues - Location of Customer

Revenues - Location of Customer (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 637,530	$ 668,639	$ 1,224,705	$ 1,274,204
Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	369,862	396,893	696,389	746,025
Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	267,668	271,746	528,316	528,179
Americas
Disaggregation of Revenue [Line Items]
Revenues	398,931	411,720	762,769	786,807
Americas | Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	244,670	256,191	455,934	481,474
Americas | Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	154,261	155,529	306,835	305,333
EMEA
Disaggregation of Revenue [Line Items]
Revenues	144,654	156,574	285,289	302,498
EMEA | Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	72,932	82,595	140,252	155,927
EMEA | Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	71,722	73,979	145,037	146,571
APAC
Disaggregation of Revenue [Line Items]
Revenues	93,945	100,345	176,647	184,899
APAC | Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	52,260	58,107	100,203	108,624
APAC | Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	$ 41,685	$ 42,238	$ 76,444	$ 76,275

Revenues - Products and Service

Revenues - Products and Services (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 637,530	$ 668,639	$ 1,224,705	$ 1,274,204
Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	369,862	396,893	696,389	746,025
Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	267,668	271,746	528,316	528,179
Products
Disaggregation of Revenue [Line Items]
Revenues	595,710	627,438	1,142,273	1,192,235
Products | Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	350,270	379,416	658,129	712,160
Products | Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	245,440	248,022	484,144	480,075
Support & Services
Disaggregation of Revenue [Line Items]
Revenues	41,820	41,201	82,432	81,969
Support & Services | Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	19,592	17,477	38,260	33,865
Support & Services | Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	$ 22,228	$ 23,724	$ 44,172	$ 48,104

Revenues Revenues - Estimated a

Revenues Revenues - Estimated and Accrued Variable Concideration (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018
Revenue from Contract with Customer [Abstract]
Accrued rebates	$ 24,178	$ 23,586
Accrued returns	13,249	8,676
Price adjustments recognized against gross accounts receivable	$ 29,762	$ 26,581

Revenues - Narrative (Details)

Revenues - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jul. 01, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Contract with customer, deferred revenues	$ 107,413	$ 113,300	$ 96,383	$ 104,400
Contract with customer, deferred revenues, current	94,200
Contract with customer, deferred revenues, noncurrent	13,200
Deferred sales commission	$ 3,300		$ 2,300

Revenues - Deferred Revenue (De

Revenues - Deferred Revenue (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018
Contract with Customer, Liability [Roll Forward]
Beginning balance	$ 113,300	$ 104,400
New deferrals	92,213	90,583
Revenue recognized	(98,100)	(98,600)
Ending balance	$ 107,413	$ 96,383

Revenues - Sales Commissions (D

Revenues - Sales Commissions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Revenue from Contract with Customer [Abstract]
Sales commissions	$ 5,185	$ 6,332	$ 10,769	$ 12,461

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - USD ($)	Apr. 15, 2019	Apr. 05, 2019	Apr. 25, 2018	Feb. 08, 2018	Jun. 30, 2019	Mar. 31, 2019	Jul. 01, 2018	Apr. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Business Acquisition [Line Items]
Purchase price, net of cash acquired									$ 50,517,000	$ 84,580,000
Severance, restructuring, and acquisition integration costs					$ 3,082,000		$ 24,928,000		6,860,000	45,322,000
Amortization of intangibles					22,368,000		25,039,000		45,709,000	49,457,000
Net income (loss)					42,290,000	$ 25,178,000	28,792,000	$ 2,570,000	67,468,000	31,362,000
Opterna International Corp.
Business Acquisition [Line Items]
Percentage of outstanding shares acquired	100.00%
Purchase price, net of cash acquired	$ 61,500,000
Acquisition price paid	45,500,000
Maximum earnout consideration	25,000,000
Estimated earnout consideration	16,000,000
Receivables	5,308,000
Property, plant, and equipment	1,328,000
Tax basis in acquired goodwill	$ 0
Post acquisition revenue of acquiree					8,800,000				8,800,000
Post acquisition income (loss) before taxes of acquiree					(100,000)				(100,000)
Net income attributable to Belden common stockholders					36,045,000		19,977,000		52,531,000	11,664,000
Amortization of intangibles					900,000				900,000
Inventory adjustment					600,000				600,000
Net income (loss)					$ 100,000				$ 100,000
Net-Tech Technology, Inc.
Business Acquisition [Line Items]
Percentage of outstanding shares acquired			100.00%
Acquisition price paid			$ 8,500,000
Snell Advanced Media
Business Acquisition [Line Items]
Percentage of outstanding shares acquired				100.00%
Acquisition Price				$ 104,600,000
Acquisition price paid				75,200,000
Maximum earnout consideration				31,400,000
Estimated earnout consideration				29,300,000
Long-term debt acquired				19,315,000
Receivables				16,551,000
Property, plant, and equipment				7,716,000
Tax basis in acquired goodwill				$ 0
Post acquisition revenue of acquiree							31,100,000			51,900,000
Post acquisition income (loss) before taxes of acquiree							(6,600,000)			(9,400,000)
Net income attributable to Belden common stockholders							35,241,000			34,169,000
Amortization of intangibles							2,800,000			5,000,000
Inventory adjustment							700,000			1,200,000
Suttle, Inc. Asset Acquisition
Business Acquisition [Line Items]
Asset acquisition, consideration transferred		$ 5,000,000
Severance and other restructuring costs | Snell Advanced Media
Business Acquisition [Line Items]
Net income attributable to Belden common stockholders							$ 20,300,000			$ 29,500,000

Acquisitions - Schedule of Reco

Acquisitions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Apr. 15, 2019	Dec. 31, 2018	Feb. 08, 2018
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Goodwill	$ 1,607,848		$ 1,557,653
Opterna International Corp.
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Receivables		$ 5,308
Inventory		8,491
Prepaid and other current assets		566
Property, plant, and equipment		1,328
Intangible assets		26,900
Goodwill		44,973
Deferred income taxes		36
Operating lease right-to-use assets		2,204
Other long-lived assets		2,070
Total assets acquired		91,876
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Accounts payable		4,847
Accrued liabilities		4,346
Long-term deferred tax liability		7,316
Long-term operating lease liability		1,923
Other long-term liabilities		7,153
Total liabilities assumed		25,585
Net assets		66,291
Net assets attributable to Belden		$ 61,516
Snell Advanced Media
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Receivables				$ 16,551
Inventory				15,084
Prepaid and other current assets				3,799
Property, plant, and equipment				7,716
Intangible assets				51,000
Goodwill				103,466
Deferred income taxes				1,388
Other long-lived assets				3,046
Total assets acquired				202,050
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Accounts payable				11,825
Accrued liabilities				25,135
Deferred revenue				8,860
Long-term debt				19,315
Postretirement benefits				31,774
Other long-term liabilities				591
Total liabilities assumed				97,500
Net assets				$ 104,550

Acquisitions - Schedule of Acqu

Acquisitions - Schedule of Acquired Intangible Assets (Details) - USD ($) $ in Thousands	Apr. 15, 2019	Feb. 08, 2018	Jun. 30, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill			$ 1,607,848	$ 1,557,653
Opterna International Corp.
Business Acquisition [Line Items]
Total intangible assets subject to amortization	$ 26,900
Goodwill	44,973
Total intangible assets	$ 71,873
Amortization Period	13 years
Opterna International Corp. | Goodwill
Business Acquisition [Line Items]
Goodwill	$ 44,973
Opterna International Corp. | Developed technologies
Business Acquisition [Line Items]
Total intangible assets subject to amortization	$ 3,500
Amortization Period	5 years
Opterna International Corp. | Customer relationships
Business Acquisition [Line Items]
Total intangible assets subject to amortization	$ 22,000
Amortization Period	15 years
Opterna International Corp. | Sales backlog
Business Acquisition [Line Items]
Total intangible assets subject to amortization	$ 900
Amortization Period	15 days
Opterna International Corp. | Trademarks
Business Acquisition [Line Items]
Total intangible assets subject to amortization	$ 500
Amortization Period	2 years
Snell Advanced Media
Business Acquisition [Line Items]
Total intangible assets subject to amortization		$ 51,000
Goodwill		103,466
Total intangible assets		$ 154,466
Amortization Period		6 years 2 months 12 days
Snell Advanced Media | Goodwill
Business Acquisition [Line Items]
Goodwill		$ 103,466
Snell Advanced Media | Developed technologies
Business Acquisition [Line Items]
Total intangible assets subject to amortization		$ 36,500
Amortization Period		5 years
Snell Advanced Media | Customer relationships
Business Acquisition [Line Items]
Total intangible assets subject to amortization		$ 11,000
Amortization Period		12 years
Snell Advanced Media | Sales backlog
Business Acquisition [Line Items]
Total intangible assets subject to amortization		$ 1,900
Amortization Period		9 days
Snell Advanced Media | Trademarks
Business Acquisition [Line Items]
Total intangible assets subject to amortization		$ 1,600
Amortization Period		27 days

Acquisitions - Schedule of Pro

Acquisitions - Schedule of Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Business Acquisition [Line Items]
Document Period End Date			Jun. 30, 2019
Opterna International Corp.
Business Acquisition [Line Items]
Revenues	$ 637,530	$ 675,343	$ 1,233,321	$ 1,287,431
Net income attributable to Belden common stockholders	$ 36,045	$ 19,977	$ 52,531	$ 11,664
Diluted income (loss) per share attributable to Belden common stockholders (in usd per share)	$ 0.91	$ 0.49	$ 1.33	$ 0.28
Snell Advanced Media
Business Acquisition [Line Items]
Revenues		$ 671,441		$ 1,285,625
Net income attributable to Belden common stockholders		$ 35,241		$ 34,169
Diluted income (loss) per share attributable to Belden common stockholders (in usd per share)		$ 0.86		$ 0.82

Reportable Segments - Additiona

Reportable Segments - Additional Information (Details) - 6 months ended Jun. 30, 2019	Segment	segment
Segment Reporting [Abstract]
Number of global business platforms	2	2

Reportable Segments - Operating

Reportable Segments - Operating Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Segment revenues	$ 637,530	$ 668,639	$ 1,224,705	$ 1,274,204
Depreciation expense	12,300	12,000	25,000	23,900
Amortization of intangibles	22,368	25,039	45,709	49,457
Severance, restructuring, and acquisition integration costs	(3,082)	(24,928)	(6,860)	(45,322)
Segment assets	3,822,980		3,822,980		$ 3,779,321
Enterprise Solutions
Segment Reporting Information [Line Items]
Segment revenues	369,862	396,893	696,389	746,025
Severance, restructuring, and acquisition integration costs	(3,082)	(22,887)	(6,860)	(37,421)
Industrial Solutions
Segment Reporting Information [Line Items]
Segment revenues	267,668	271,746	528,316	528,179
Severance, restructuring, and acquisition integration costs	0	(2,041)	0	(7,901)
Reportable Segment
Segment Reporting Information [Line Items]
Segment revenues	637,530	671,441	1,224,705	1,278,864
Segment EBITDA	100,941	123,506	187,958	227,384
Depreciation expense	12,301	12,026	25,021	23,891
Amortization of intangibles	22,368	25,039	45,709	49,457
Amortization of software development intangible assets	1,072	488	2,009	724
Severance, restructuring, and acquisition integration costs	(3,082)	(24,928)	(6,860)	(45,322)
Purchase accounting effects of acquisitions	718	1,036	2,031	1,538
Deferred revenue adjustments	0	2,802	0	4,660
Segment assets	1,301,296	1,196,219	1,301,296	1,196,219
Reportable Segment | Enterprise Solutions
Segment Reporting Information [Line Items]
Segment revenues	369,862	399,695	696,389	750,685
Segment EBITDA	53,483	70,281	93,041	127,733
Depreciation expense	7,540	7,153	15,273	14,373
Amortization of intangibles	9,320	11,809	19,490	22,979
Amortization of software development intangible assets	1,044	488	1,958	724
Severance, restructuring, and acquisition integration costs	(3,082)	(22,887)	(6,860)	(37,421)
Purchase accounting effects of acquisitions	718	1,036	2,031	1,538
Deferred revenue adjustments		2,802		4,660
Segment assets	822,402	759,334	822,402	759,334
Reportable Segment | Industrial Solutions
Segment Reporting Information [Line Items]
Segment revenues	267,668	271,746	528,316	528,179
Segment EBITDA	47,458	53,225	94,917	99,651
Depreciation expense	4,761	4,873	9,748	9,518
Amortization of intangibles	13,048	13,230	26,219	26,478
Amortization of software development intangible assets	28	0	51	0
Severance, restructuring, and acquisition integration costs	0	(2,041)	0	(7,901)
Purchase accounting effects of acquisitions	0	0	0	0
Deferred revenue adjustments		0		0
Segment assets	478,894	436,885	478,894	436,885
Affiliate revenues | Reportable Segment
Segment Reporting Information [Line Items]
Segment revenues	893	1,513	2,280	2,588
Affiliate revenues | Reportable Segment | Enterprise Solutions
Segment Reporting Information [Line Items]
Segment revenues	893	1,496	2,263	2,542
Affiliate revenues | Reportable Segment | Industrial Solutions
Segment Reporting Information [Line Items]
Segment revenues	$ 0	$ 17	$ 17	$ 46

Reportable Segments - Reconcili

Reportable Segments - Reconciliation of Total Reportable Segments' Revenues and EBITDA to Consolidated Revenues and Consolidated Income Before Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenues	$ 637,530	$ 668,639	$ 1,224,705	$ 1,274,204
Amortization of intangibles	(22,368)	(25,039)	(45,709)	(49,457)
Depreciation expense	(12,300)	(12,000)	(25,000)	(23,900)
Severance, restructuring, and acquisition integration costs	(3,082)	(24,928)	(6,860)	(45,322)
Operating income	61,139	56,506	105,584	100,709
Interest expense, net	(14,168)	(15,088)	(28,361)	(32,066)
Non-operating pension benefit (cost)	481	(257)	1,028	(532)
Loss on debt extinguishment	0	(3,030)	0	(22,990)
Consolidated income before taxes	47,452	38,131	78,251	45,121
Reportable Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment revenues	637,530	671,441	1,224,705	1,278,864
Deferred revenue adjustments	0	(2,802)	0	(4,660)
Total Segment EBITDA	100,941	123,506	187,958	227,384
Amortization of intangibles	(22,368)	(25,039)	(45,709)	(49,457)
Depreciation expense	(12,301)	(12,026)	(25,021)	(23,891)
Severance, restructuring, and acquisition integration costs	(3,082)	(24,928)	(6,860)	(45,322)
Purchase accounting effects related to acquisitions	(718)	(1,036)	(2,031)	(1,538)
Amortization of software development intangible assets	(1,072)	(488)	(2,009)	(724)
Loss on sale of assets	0	0	0	(94)
Eliminations
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income	$ (261)	(681)	$ (744)	(989)
Snell Advanced Media
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Amortization of intangibles		$ (2,800)		$ (5,000)

Income Per Share - Basis for In

Income Per Share - Basis for Income Per Share Computations (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Apr. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Numerator:
Net income	$ 42,290	$ 28,792		$ 67,468	$ 31,362
Less: Net income (loss) attributable to noncontrolling interests	90	(77)		66	(125)
Less: Preferred stock dividends	8,733	8,733	$ 8,700	17,466	17,466
Net income attributable to Belden common stockholders	$ 33,467	$ 20,136		$ 49,936	$ 14,021
Denominator:
Weighted average shares outstanding, basic (in shares)	39,389	40,735		39,405	41,184
Effect of dilutive common stock equivalents (in shares)	222	239		230	308
Weighted average shares outstanding, diluted (in shares)	39,611	40,974		39,635	41,492

Income Per Share - Additional I

Income Per Share - Additional Information (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares excluded from diluted weighted average shares outstanding (in shares)	1.2	0.9	1.1	0.7
Anti-dilutive shares excluded from diluted weighted average shares outstanding due to performance conditions not being met (in shares)	0.3	0.3	0.3	0.2
Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares excluded from diluted weighted average shares outstanding (in shares)	6.9	6.9	6.9	6.9

Inventories - Major Classes of

Inventories - Major Classes of Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 136,433	$ 146,803
Work-in-process	49,017	45,939
Finished goods	154,179	152,572
Gross inventories	339,629	345,314
Excess and obsolete reserves	(29,918)	(28,896)
Net inventories	$ 309,711	$ 316,418

Leases Additional Information (

Leases Additional Information (Details)	6 Months Ended
	Jun. 30, 2019
Lessee, Lease, Description [Line Items]
Renewal term	15 years
Minimum
Lessee, Lease, Description [Line Items]
Operating and finance lease, term of contract	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating and finance lease, term of contract	16 years

Leases Components of Lease Expe

Leases Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Leases [Abstract]
Operating lease cost	$ 4,756	$ 9,742
Amortization of right-of-use asset	43	68
Interest on lease liabilities	6	10
Total finance lease cost	$ 49	$ 78

Leases Supplemental Cash Flow I

Leases Supplemental Cash Flow Information Related To Leases (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Leases [Abstract]
Operating cash flows from operating leases	$ 5,048	$ 10,136
Operating cash flows from finance leases	7	16
Financing cash flows from finance leases	$ 100	$ 173

Leases Supplemental Balance She

Leases Supplemental Balance Sheet Information Related To Leases (Details) $ in Thousands	Jun. 30, 2019USD ($)
Leases [Abstract]
Operating lease assets	$ 84,099
Accrued liabilities	18,127
Long-term operating lease liabilities	77,679
Operating lease liability	95,806
Other long-lived assets, at cost	938
Accumulated depreciation	(576)
Other long-lived assets, net	$ 362

Leases Supplemental Other Infor

Leases Supplemental Other Information Related To Leases (Details)	Jun. 30, 2019
Weighted Average Remaining Lease Term
Operating leases	7 years
Finance leases	3 years
Weighted Average Discount Rate
Operating leases	6.90%
Finance leases	6.10%

Leases Maturities of Lease Liab

Leases Maturities of Lease Liabilities (Details) $ in Thousands	Jun. 30, 2019USD ($)
Operating leases
2019	$ 23,731
2020	21,046
2021	17,345
2022	14,762
2023	12,062
Thereafter	37,937
Total minimum rental commitments	126,883
Finance leases
2019	280
2020	200
2021	86
2022	36
2023	7
Thereafter	0
Total minimum rental commitments	$ 609

Long-Lived Assets - Additional

Long-Lived Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 12.3	$ 12	$ 25	$ 23.9
Amortization of Intangible Assets Including Amortization of Software Development	$ 23.4	$ 25.5	$ 47.7	$ 50.2

Severance, Restructuring and Ac

Severance, Restructuring and Acquisition Integration Activities - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost Remaining	$ 3,000		$ 3,000
Severance, restructuring, and acquisition integration costs	3,082	$ 24,928	$ 6,860	$ 45,322
Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost payable period			60 days
Cost of Sales
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	423	7,231	$ 985	16,662
Selling, General and Administrative Expenses
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	2,333	14,544	5,112	23,946
Research and Development
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	326	3,153	763	4,714
PPC Broadband and Opterna Integration Program
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	$ 2,500		2,500
Grass Valley And SAM Integration Program
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs		20,300	$ 3,000	29,500
Industrial Manufacturing Footprint Program
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs		$ 3,900		$ 11,400

Severance, Restructuring and _2

Severance, Restructuring and Acquisition Integration Activities - Severance, Restructuring and Integration Costs by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Restructuring Cost and Reserve [Line Items]
Severance	$ 0	$ 11,062	$ 220	$ 11,622
Other Restructuring and Integration Costs	3,082	13,866	6,640	33,700
Total Costs	3,082	24,928	6,860	45,322
Enterprise Solutions
Restructuring Cost and Reserve [Line Items]
Severance	0	10,872	220	11,380
Other Restructuring and Integration Costs	3,082	12,015	6,640	26,041
Total Costs	3,082	22,887	6,860	37,421
Industrial Solutions
Restructuring Cost and Reserve [Line Items]
Severance	0	190	0	242
Other Restructuring and Integration Costs	0	1,851	0	7,659
Total Costs	$ 0	$ 2,041	$ 0	$ 7,901

Severance, Restructuring, and_3

Severance, Restructuring, and Acquisition Integration Activities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	$ 3,082	$ 24,928	$ 6,860	$ 45,322
Cost of sales
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	423	7,231	985	16,662
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	2,333	14,544	5,112	23,946
Research and development expenses
Restructuring Cost and Reserve [Line Items]
Severance, restructuring, and acquisition integration costs	$ 326	$ 3,153	$ 763	$ 4,714

Long-Term Debt and Other Borr_3

Long-Term Debt and Other Borrowing Arrangements - Carrying Values of Long-Term Debt and Other Borrowing Arrangements (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total senior subordinated notes	$ 1,478,880,000	$ 1,485,900,000
Less unamortized debt issuance costs	(21,309,000)	(22,700,000)
Long-term debt	1,457,571,000	1,463,200,000
Revolving credit agreement due 2022
Debt Instrument [Line Items]
Revolving credit agreement due 2022	$ 0	0
3.875% Senior subordinated notes due 2028
Debt Instrument [Line Items]
Senior subordinated notes interest rate	3.875%
Total senior subordinated notes	$ 398,160,000	400,050,000
3.375% Senior subordinated notes due 2027
Debt Instrument [Line Items]
Senior subordinated notes interest rate	3.375%
Total senior subordinated notes	$ 511,920,000	514,350,000
4.125% Senior subordinated notes due 2026
Debt Instrument [Line Items]
Senior subordinated notes interest rate	4.125%
Total senior subordinated notes	$ 227,520,000	228,600,000
2.875% Senior subordinated notes due 2025
Debt Instrument [Line Items]
Senior subordinated notes interest rate	2.875%
Total senior subordinated notes	$ 341,280,000	$ 342,900,000

Long-Term Debt and Other Borr_4

Long-Term Debt and Other Borrowing Arrangements - Additional Information (Details)	May 16, 2017USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2019EUR (€)	Dec. 31, 2018USD ($)
Debt Instrument [Line Items]
Senior subordinated notes		$ 1,478,880,000		$ 1,485,900,000
Senior Subordinated Notes
Debt Instrument [Line Items]
Senior subordinated notes		1,478,900,000
Fair value of senior subordinated notes		1,549,000,000
Revolving credit agreement due 2022
Debt Instrument [Line Items]
Revolving credit agreement due 2022, maximum borrowing capacity	$ 400,000,000
Commitment fee percentage	0.25%
Fixed charge coverage, minimum threshold (as a percent)	90.00%
Revolving credit agreement due 2022, borrowings outstanding		0		0
Revolving credit agreement due 2022, available borrowing capacity		$ 320,900,000
Revolving credit agreement due 2022 | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)	1.25%
Revolving credit agreement due 2022 | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)	1.75%
3.875% Senior subordinated notes due 2028
Debt Instrument [Line Items]
Senior subordinated notes interest rate		3.875%	3.875%
Senior subordinated notes		$ 398,160,000		400,050,000
3.875% Senior subordinated notes due 2028 | Senior Subordinated Notes
Debt Instrument [Line Items]
Aggregate principal amount outstanding of senior subordinated notes | €			€ 350,000,000
Senior subordinated notes interest rate		3.875%	3.875%
3.375% Senior subordinated notes due 2027
Debt Instrument [Line Items]
Senior subordinated notes interest rate		3.375%	3.375%
Senior subordinated notes		$ 511,920,000		514,350,000
3.375% Senior subordinated notes due 2027 | Senior Subordinated Notes
Debt Instrument [Line Items]
Aggregate principal amount outstanding of senior subordinated notes | €			€ 450,000,000
Senior subordinated notes interest rate		3.375%	3.375%
4.125% Senior subordinated notes due 2026
Debt Instrument [Line Items]
Senior subordinated notes interest rate		4.125%	4.125%
Senior subordinated notes		$ 227,520,000		228,600,000
4.125% Senior subordinated notes due 2026 | Senior Subordinated Notes
Debt Instrument [Line Items]
Aggregate principal amount outstanding of senior subordinated notes | €			€ 200,000,000
2.875% Senior subordinated notes due 2025
Debt Instrument [Line Items]
Senior subordinated notes interest rate		2.875%	2.875%
Senior subordinated notes		$ 341,280,000		$ 342,900,000
2.875% Senior subordinated notes due 2025 | Senior Subordinated Notes
Debt Instrument [Line Items]
Aggregate principal amount outstanding of senior subordinated notes | €			€ 300,000,000
Senior subordinated notes interest rate		2.875%	2.875%

Net Investment Hedge (Details)

Net Investment Hedge (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative translation adjustment	$ (16,904)	$ 60,642	$ 11,887	$ 28,847
Senior Subordinated Notes
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative translation adjustment	$ 6,900	$ 66,500	$ 6,900	$ 66,500

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Income Tax Disclosure [Abstract]
Income tax (benefit) expense	$ 5,162	$ 9,339	$ 10,783	$ 13,759
Effective tax rate	(10.90%)	(24.50%)	(13.80%)	(30.50%)
Change in valuation allowance income tax benefit			$ 6,400	$ 1,800
Income tax expense related to debt refinance		$ 1,200		1,200
Tax Cuts and Jobs Act of 2017, income tax expense				$ 500

Pension and Other Postretirem_3

Pension and Other Postretirement Obligations - Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Pension Obligations
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,047	$ 942	$ 2,106	$ 2,075
Interest cost	2,939	1,905	5,948	3,781
Expected return on plan assets	(4,020)	(2,508)	(8,135)	(5,028)
Amortization of prior service cost (credit)	40	(12)	26	(22)
Actuarial losses (gains)	316	612	642	1,277
Net periodic benefit cost	322	939	587	2,083
Other Postretirement Obligations
Defined Benefit Plan Disclosure [Line Items]
Service cost	10	13	19	26
Interest cost	270	260	542	524
Expected return on plan assets	0	0	0	0
Amortization of prior service cost (credit)	0	0	0	0
Actuarial losses (gains)	(26)	0	(51)	0
Net periodic benefit cost	$ 254	$ 273	$ 510	$ 550

Comprehensive Income and Accu_3

Comprehensive Income and Accumulated Other Comprehensive Income (Loss) - Total Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jul. 01, 2018	Apr. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Equity [Abstract]
Net income	$ 42,290	$ 25,178	$ 28,792	$ 2,570	$ 67,468	$ 31,362
Foreign currency translation gain (loss), net of $0.4 million, $0.6 million, $0.8 million, and $1.1 million tax, respectively	(16,904)		60,642		11,887	28,847
Adjustments to pension and postretirement liability, net of $0.1 million, $0.2 million, $0.1 million, and $0.5 million tax, respectively	251		369		470	772
Total comprehensive income	25,637		89,803		79,825	60,981
Less: Comprehensive income (loss) attributable to noncontrolling interests	130		(94)		107	(126)
Comprehensive income attributable to Belden	25,507		89,897		79,718	61,107
Foreign currency translation, tax income (loss)	400		600		800	1,100
Adjustments to pension and postretirement liability, tax	$ 100		$ 200		$ 100	$ 500

Comprehensive Income and Accu_4

Comprehensive Income and Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jul. 01, 2018	Apr. 01, 2018	Jun. 30, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 1,431,329	$ 1,387,588	$ 1,292,146	$ 1,434,866	$ 1,387,588
Other comprehensive loss, net of tax	(16,653)	29,010	61,011	(31,392)
Ending balance	1,433,533	1,431,329	$ 1,351,110	$ 1,292,146	1,433,533
Foreign Currency Translation Component
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(41,882)			(41,882)
Other comprehensive income attributable to Belden before reclassifications					11,846
Amounts reclassified from accumulated other comprehensive income					0
Other comprehensive loss, net of tax					11,846
Ending balance	(30,036)				(30,036)
Pension and Other Postretirement Benefit Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		(33,025)			(33,025)
Other comprehensive income attributable to Belden before reclassifications					0
Amounts reclassified from accumulated other comprehensive income					470
Other comprehensive loss, net of tax					470
Ending balance	(32,555)				(32,555)
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance		$ (74,907)			(74,907)
Other comprehensive income attributable to Belden before reclassifications					11,846
Amounts reclassified from accumulated other comprehensive income					470
Other comprehensive loss, net of tax					12,316
Ending balance	$ (62,591)				$ (62,591)

Comprehensive Income and Accu_5

Comprehensive Income and Accumulated Other Comprehensive Income (Loss) - Summary of Effects of Reclassifications from Accumulated Other Comprehensive Income (Loss) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)
Pension and Other Postretirement Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total net of tax	$ (470)
Reclassification out of Accumulated Other Comprehensive Income | Actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	591
Reclassification out of Accumulated Other Comprehensive Income | Prior service cost
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	26
Reclassification out of Accumulated Other Comprehensive Income | Pension and Other Postretirement Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	617
Tax benefit	(147)
Total net of tax	$ 470

Preferred Stock Preferred Stock

Preferred Stock Preferred Stock (Details) $ / shares in Units, $ in Thousands	Jul. 15, 2019shares	Jun. 30, 2019USD ($)	Jul. 01, 2018USD ($)	Apr. 01, 2018USD ($)	Jun. 30, 2019USD ($)	Jul. 01, 2018USD ($)	Dec. 31, 2016USD ($)trading_day$ / sharesshares
Class of Stock [Line Items]
Preferred stock dividends | $		$ 8,733	$ 8,733	$ 8,700	$ 17,466	$ 17,466
Depository Shares
Class of Stock [Line Items]
Depository shares issued (in shares)							5,200,000
Interest in preferred stock per depository share							0.01
Six Point Seven Five Percentage Series B Mandatory Convertible Preferred Stock
Class of Stock [Line Items]
Percentage of issued shares							6.75%
Offering price per share (in usd per share) | $ / shares							$ 100
Threshold trading day period | trading_day							20
Proceeds from offering, net | $							$ 501,000
Six Point Seven Five Percentage Series B Mandatory Convertible Preferred Stock | Scenario, Forecast | Minimum
Class of Stock [Line Items]
Preferred stock converted in to common stock (in shares)	120.46
Number of common stock issued upon conversion (in shares)	6,200,000
Subsequent Event | Six Point Seven Five Percentage Series B Mandatory Convertible Preferred Stock
Class of Stock [Line Items]
Preferred stock converted in to common stock (in shares)	132.50
Number of common stock issued upon conversion (in shares)	6,900,000

Share Repurchase (Details)

Share Repurchase (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Apr. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Nov. 29, 2018
Equity [Abstract]
Stock repurchase program, authorized amount						$ 300,000
Shares repurchase program (in shares)	0.4	0.4		0.4	1.4
Value of shares repurchased	$ 22,815	$ 24,730	$ 75,270	$ 22,800	$ 100,000
Treasury stock acquired, average cost per share (in usd per share)	$ 57.47	$ 63.75		$ 57.47	$ 69.53

Subsequent Events Subsequent Ev

Subsequent Events Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 15, 2019	Jul. 31, 2019	Jun. 30, 2019	Jul. 01, 2018	Apr. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Dec. 31, 2016
Subsequent Event [Line Items]
Shares repurchase program (in shares)			400,000	400,000		400,000	1,400,000
Value of shares repurchased			$ 22,815	$ 24,730	$ 75,270	$ 22,800	$ 100,000
Treasury stock acquired, average cost per share (in usd per share)			$ 57.47	$ 63.75		$ 57.47	$ 69.53
Subsequent Event
Subsequent Event [Line Items]
Shares repurchase program (in shares)		500,000
Value of shares repurchased		$ 27,200
Treasury stock acquired, average cost per share (in usd per share)		$ 55.17
Six Point Seven Five Percentage Series B Mandatory Convertible Preferred Stock
Subsequent Event [Line Items]
Percentage of issued shares								6.75%
Six Point Seven Five Percentage Series B Mandatory Convertible Preferred Stock | Subsequent Event
Subsequent Event [Line Items]
Preferred stock converted in to common stock (in shares)	132.50
Number of common stock issued upon conversion (in shares)	6,900,000

Uncategorized Items - bdc-06302

Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (29,041,000)
Noncontrolling Interest [Member]
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value	us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue	4,775,000
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (29,041,000)