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Acquisitions - Additional Information (Details) - USD ($) |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
May 31, 2017 | Dec. 31, 2016 | Jan. 07, 2016 | Jan. 02, 2015 | Dec. 31, 2017 | Oct. 01, 2017 | Jul. 02, 2017 | Apr. 02, 2017 | Dec. 31, 2016 | Oct. 02, 2016 | Jul. 03, 2016 | Apr. 03, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  | $ 604,884,000 | $ 621,745,000 | $ 610,633,000 | $ 551,381,000 | $ 612,435,000 | $ 601,109,000 | $ 601,631,000 | $ 541,497,000 | $ 2,388,643,000 | $ 2,356,672,000 | $ 2,309,222,000 |
Loss before taxes |  |  |  |  |  |  |  |  |  |  |  |  | 99,348,000 | 126,461,000 | 39,940,000 |
Amortization of intangible assets |  |  |  |  |  |  |  |  |  |  |  |  | 103,997,000 | 98,385,000 | 103,791,000 |
Thinklogical Holdings LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of outstanding shares acquired | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition price | $ 171,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of acquired receivables | $ 4,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  | $ 44,000,000 |  |  |  |  |  |  |  | $ 44,000,000 |  |  |
Goodwill, expected tax deductible amount period |  |  |  |  |  |  |  |  |  |  |  |  | 15 years |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  | $ 30,800,000 |  |  |
Loss before taxes |  |  |  |  |  |  |  |  |  |  |  |  | 8,900,000 |  |  |
Amortization of intangible assets |  |  |  |  |  |  |  |  |  |  |  |  | 11,900,000 |  |  |
Net income attributable to Belden common stockholders |  |  |  |  |  |  |  |  |  |  |  |  | 60,690,000 | 113,014,000 |  |
M2 FX Limited [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of outstanding shares acquired |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition price |  |  | $ 19,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated earn-out consideration |  | $ 0 | $ 3,200,000 |  |  |  |  |  |  |  |  |  | 3,200,000 |  |  |
Benefit included in selling, general, and administrative expense |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,200,000 |  |
Tripwire [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of outstanding shares acquired |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Acquisition price |  |  |  | $ 703,200,000 |  |  |  |  |  |  |  |  |  |  |  |
Fair value of acquired receivables |  |  |  | 37,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Amortization of intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 43,200,000 |
Net income attributable to Belden common stockholders |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 92,104,000 |
Acquired receivable, gross contractual amount |  |  |  | 38,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Post acquisition revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 116,600,000 |
Post acquisition income (loss) from continuing operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 47,800,000 |
Impact on reported revenue due to reduction of acquired deferred revenue balance to fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50,400,000 |
Compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,200,000 | $ 9,200,000 |
Tripwire [Member] | Pro Forma [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,000,000
Compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,200,000
Tripwire [Member] | Revolving Credit Agreement Mature 2018 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving credit agreement due 2022 |  |  |  | $ 200,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Fair Value Adjustment to Inventory [Member] | Thinklogical Holdings LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to Belden common stockholders |  |  |  |  |  |  |  |  |  |  |  |  | $ (6,100,000) | 6,100,000 |  |
Amortization Of Sales Backlog Intangible Asset [Member] | Thinklogical Holdings LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to Belden common stockholders |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,400,000 |  |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(10)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(15)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(8)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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