v2.4.1.9
Components of Other Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Schedule of Other Assets [Line Items]    
Furniture, Equipment and Leasehold Improvements, Net $ 132,448us-gaap_PropertyPlantAndEquipmentNet $ 135,740us-gaap_PropertyPlantAndEquipmentNet
Prepaid Expenses 220,192us-gaap_PrepaidExpenseCurrentAndNoncurrent 102,503us-gaap_PrepaidExpenseCurrentAndNoncurrent
Other Assets 102,998us-gaap_OtherAssetsMiscellaneous 96,501us-gaap_OtherAssetsMiscellaneous
Freestanding Derivatives 2,406bx_FreestandingDerivatives 3,290bx_FreestandingDerivatives
Net Investment Hedges   523us-gaap_NetInvestmentHedgeDerivativeAssetsAtFairValue
Total Other Assets $ 458,044us-gaap_OtherAssets $ 338,557us-gaap_OtherAssets