Summary of Significant Accounting Policies (Policies)	9 Months Ended
Oct. 01, 2023
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, 2022: •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 2022 Annual Report on Form 10-K.
Business Description	Business DescriptionWe are a leading global supplier of network infrastructure and digitization solutions built around two global businesses - Enterprise Solutions and Industrial Automation Solutions. Our mission is to build the foundation for a digital world that makes the digital journey simpler, smarter and secure.
Reporting Periods	Reporting PeriodsOur 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 April 2, 2023, the 92nd day of our fiscal year 2023. Our fiscal second and third quarters each have 91 days. The nine months ended October 1, 2023 and October 2, 2022 included 274 and 275 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.
Cash and Cash Equivalents	Cash and Cash EquivalentsWe 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 October 1, 2023, we did not have any such cash equivalents on hand. The primary objective of our investment activities is to preserve our capital for the purpose of funding operations. We do not enter into investments for trading or speculative purposes.
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. Historically, these lawsuits have primarily involved 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 material 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 EventsWe evaluated subsequent events after the balance sheet date through the financial statement issuance date for appropriate accounting and disclosure.
Noncontrolling Interest	Noncontrolling Interest On April 28, 2023, we sold our 51% ownership interest in Shanghai Hi-Tech Control System Co, Ltd to (Hite) for $0.9 million and recognized a $0.4 million pretax gain on sale. The sale also includes $0.6 million of potential earnout payments. The joint venture developed and provided certain Industrial Automation Solutions products and integrated solutions to customers in China. The joint venture was determined to not have sufficient equity at risk; therefore, it was considered a variable interest entity. As Belden was the primary beneficiary of the joint venture, due to both our ownership percentage and control over the activities of the joint venture, we consolidated the joint venture in our financial statements and presented the results of the joint venture attributable to Hite’s ownership as net income attributable to noncontrolling interest in the Condensed Consolidated Statements of Operations up to April 28, 2023 when we sold and deconsolidated the entity. The joint venture was not material to our consolidated financial statements during the nine months ended October 1, 2023 and October 2, 2022. A Belden subsidiary includes a noncontrolling interest as of and for the periods ended October 1, 2023 and October 2, 2022. The results attributable to the noncontrolling interest holders are not material to our consolidated financial statements, and are presented as net income attributable to noncontrolling interests in the Condensed Consolidated Statements of Operations.
Current Year Adoption of Accounting Pronouncements	Current Year Adoption of Accounting PronouncementsNone of the accounting pronouncements that became effective during 2023 had a material impact to our condensed consolidated financial statements or disclosures.

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Oct. 01, 2023

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, 2022:

•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 2022 Annual Report on Form 10-K.

Business Description

Business DescriptionWe are a leading global supplier of network infrastructure and digitization solutions built around two global businesses - Enterprise Solutions and Industrial Automation Solutions. Our mission is to build the foundation for a digital world that makes the digital journey simpler, smarter and secure.

Reporting Periods

Reporting PeriodsOur 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 April 2, 2023, the 92nd day of our fiscal year 2023. Our fiscal second and third quarters each have 91 days. The nine months ended October 1, 2023 and October 2, 2022 included 274 and 275 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.

Cash and Cash Equivalents

Cash and Cash EquivalentsWe 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 October 1, 2023, we did not have any such cash equivalents on hand. The primary objective of our investment activities is to preserve our capital for the purpose of funding operations. We do not enter into investments for trading or speculative purposes.

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. Historically, these lawsuits have primarily involved 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 material adverse effect on our financial position, results of operations, or cash flow.

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 EventsWe evaluated subsequent events after the balance sheet date through the financial statement issuance date for appropriate accounting and disclosure.

Noncontrolling Interest

On April 28, 2023, we sold our 51% ownership interest in Shanghai Hi-Tech Control System Co, Ltd to (Hite) for $0.9 million and recognized a $0.4 million pretax gain on sale. The sale also includes $0.6 million of potential earnout payments. The joint venture developed and provided certain Industrial Automation Solutions products and integrated solutions to customers in China. The joint venture was determined to not have sufficient equity at risk; therefore, it was considered a variable interest entity. As Belden was the primary beneficiary of the joint venture, due to both our ownership percentage and control over the activities of the joint venture, we consolidated the joint venture in our financial statements and presented the results of the joint venture attributable to Hite’s ownership as net income attributable to noncontrolling interest in the Condensed Consolidated Statements of Operations up to April 28, 2023 when we sold and deconsolidated the entity. The joint venture was not material to our consolidated financial statements during the nine months ended October 1, 2023 and October 2, 2022.

A Belden subsidiary includes a noncontrolling interest as of and for the periods ended October 1, 2023 and October 2, 2022. The results attributable to the noncontrolling interest holders are not material to our consolidated financial statements, and are presented as net income attributable to noncontrolling interests in the Condensed Consolidated Statements of Operations.

Current Year Adoption of Accounting Pronouncements

Current Year Adoption of Accounting PronouncementsNone of the accounting pronouncements that became effective during 2023 had a material impact to our condensed consolidated financial statements or disclosures.