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Revenues Revenues - Estimated and Accrued Variable Consideration (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Apr. 03, 2022 | Dec. 31, 2021
Revenue from Contract with Customer [Abstract] |  |
Accrued rebates included in accrued liabilities | $ 28,897 | $ 55,520
Accrued returns included in accrued liabilities | 11,492 | 12,500
Price adjustments recognized against gross accounts receivable | $ 22,742 | $ 23,035

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- Definition Accrued sales rebates. + References No definition available. + Details
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Namespace Prefix: | bdc_
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Balance Type: | credit
Period Type: | instant

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- Definition Accrued Sales Returns + References No definition available. + Details
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Namespace Prefix: | bdc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from change in estimate of transaction price which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. Includes, but is not limited to, change in assessment of whether estimate of variable consideration is constrained. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration