v3.3.1.900
Fair Value Disclosures - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Operating performance projections covering period 5 years    
Transfers out of Level 3 $ 0 $ 280  
Transfers into Level 3 0 339  
Proceeds from long-term borrowings 787 997 $ 0
Repayment of borrowings 750 $ 1,000 750
CLO Borrowings [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Principal amounts outstanding of the borrowings, maturity year, minimum   2016  
Principal amounts outstanding of the borrowings, maturity year, maximum   2027  
Loss on fair value borrowings   $ (65) (117)
CLO Bank Loans and Bonds [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Gain (loss) on fair value assets   69 $ 153
Consolidated CLOs [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Proceeds from long-term borrowings   1,582  
Repayment of borrowings   485  
Assets of Consolidated VIEs, [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Transfers out of Level 3 0 280  
Transfers into Level 3 0 302  
Private/ Public Equity [Member] | Assets of Consolidated VIEs, [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Transfers out of Level 3 0    
Transfers into Level 3 0 37  
Bank Loans and Other Assets [Member] | Assets of Consolidated VIEs, [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Transfers out of Level 3   280  
Transfers into Level 3   302  
Significant Unobservable Inputs (Level 3) [Member] | Private/ Public Equity [Member] | Consolidated Variable Interest Entities [Member]      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total investments $ 196 $ 80