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v2.4.1.9

Long-Term Debt and Other Borrowing Arrangements - Schedule of Senior Subordinated Notes (Detail) | 12 Months Ended
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Dec. 31, 2014
Senior Subordinated Notes Due 2024 [Member] | 2019 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 102.625%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndNineteenMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyFourMember
Senior Subordinated Notes Due 2024 [Member] | 2020 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 101.75%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndTwentyMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyFourMember
Senior Subordinated Notes Due 2024 [Member] | 2021 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 100.875%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndTwentyOneMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyFourMember
Senior Subordinated Notes Due 2024 [Member] | 2022 and Thereafter [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndTwentyTwoAndThereafterMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyFourMember
Senior Subordinated Notes Due 2023 [Member] | 2018 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 102.75%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndEighteenMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyThreeMember
Senior Subordinated Notes Due 2023 [Member] | 2019 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 101.833%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndNineteenMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyThreeMember
Senior Subordinated Notes Due 2023 [Member] | 2020 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 100.917%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndTwentyMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyThreeMember
Senior Subordinated Notes Due 2023 [Member] | 2021 and Thereafter [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndTwentyOneAndThereafterMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyThreeMember
Senior Subordinated Notes Due 2022 [Member] | 2017 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 102.75%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndSeventeenMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyTwoMember
Senior Subordinated Notes Due 2022 [Member] | 2018 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 101.833%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndEighteenMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyTwoMember
Senior Subordinated Notes Due 2022 [Member] | 2019 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 100.917%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndNineteenMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyTwoMember
Senior Subordinated Notes Due 2022 [Member] | 2020 and Thereafter [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndTwentyAndThereafterMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandTwentyTwoMember
Senior Subordinated Notes Due 2019 [Member] | 2014 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 104.625%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndFourteenMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandNineteenMember
Senior Subordinated Notes Due 2019 [Member] | 2015 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 103.083%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndFifteenMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandNineteenMember
Senior Subordinated Notes Due 2019 [Member] | 2016 [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 101.542%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndSixteenMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandNineteenMember
Senior Subordinated Notes Due 2019 [Member] | 2017 and Thereafter [Member] |
Debt Instrument [Line Items] |
Redemption price as a percentage of the face amount of the notes | 100.00%us-gaap_DebtInstrumentRedemptionPricePercentage / us-gaap_CreationDateAxis = bdc_TwoThousandAndSeventeenAndThereafterMember / us-gaap_DebtInstrumentAxis = bdc_SeniorSubordinatedNotesDueTwoThousandNineteenMember

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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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