XML 31 R118.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Share Repurchases - Additional Information (Detail) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified | 12 Months Ended | 42 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2014 | Nov. 30, 2012 | Jul. 31, 2011
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Purchase of common stock |  |  |  |  | $ 200,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1 | $ 150,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1
Payments under share repurchase program | 92,197,000 us-gaap_PaymentsForRepurchaseOfCommonStock | 93,750,000 us-gaap_PaymentsForRepurchaseOfCommonStock | 75,000,000 us-gaap_PaymentsForRepurchaseOfCommonStock |  |  |
Share Repurchase Program [Member] |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Payments under share repurchase program | $ 92,200,000 us-gaap_PaymentsForRepurchaseOfCommonStock / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember | $ 93,800,000 us-gaap_PaymentsForRepurchaseOfCommonStock / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember | $ 75,000,000 us-gaap_PaymentsForRepurchaseOfCommonStock / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember | $ 310,900,000 us-gaap_PaymentsForRepurchaseOfCommonStock / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember |  |
Repurchase of shares | 1,300 us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember | 1,700 us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember | 2,100 us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember | 6,700 us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember |  |
Repurchase of shares average price per share | $ 73.06 us-gaap_TreasuryStockAcquiredAverageCostPerShare / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember | $ 54.76 us-gaap_TreasuryStockAcquiredAverageCostPerShare / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember | $ 36.20 us-gaap_TreasuryStockAcquiredAverageCostPerShare / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember | $ 46.54 us-gaap_TreasuryStockAcquiredAverageCostPerShare / us-gaap_ShareRepurchaseProgramAxis = bdc_ShareRepurchaseProgramMember |  |

X
- Details
Name: | us-gaap_EquityClassOfTreasuryStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsForRepurchaseOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
Name: | us-gaap_TreasuryStockAcquiredAverageCostPerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=bdc_ShareRepurchaseProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |