v2.4.0.6

Property, Plant And Equipment, Net (Narrative) (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2010
Property, Plant and Equipment [Line Items] |  |  |
Depreciation and amortization expense for Property, plant and equipment | $ 36.3 | $ 36.1 | $ 32.3

X
- Definition Depreciation And Amortization Of Property + References No definition available. + Details
Name: | br_DepreciationAndAmortizationOfProperty
Namespace Prefix: | br_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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