XML 114 R120.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Subsequent Events - Additional Information (Detail) (Subsequent Event [Member], USD $) In Millions, unless otherwise specified | 1 Months Ended
--- | ---
Feb. 28, 2014
Subsequent Event [Member] |
Subsequent Event [Line Items] |
Cost of binding offer to purchase Grass Valley | $ 220

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer for a binding purchase offer. + References No definition available. + Details
Name: | bdc_BusinessCombinationBindingPurchaseOfferConsiderationOffered
Namespace Prefix: | bdc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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