XML 114 R60.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurement - Financial Instruments Measured at Fair Value (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, beginning of period $ 16,828.5 $ 11,001.1
Initial consolidation of funds 2,595.9 8,026.7
Transfers out(1) (145.6) (7.1)
Purchases 7,476.0 6,022.5
Sales (3,523.9) (2,852.8)
Settlements (3,614.4) (4,164.6)
Realized and unrealized gains (losses), net 1,425.7 (1,197.3)
Balance, end of period 21,042.2 16,828.5
Changes in unrealized gains (losses) included in earnings related to financial assets still held at the reporting date 2,130.4 (426.2)
Equity Securities [Member]
   
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, beginning of period 1,868.9 36.8
Initial consolidation of funds 76.9 2,550.4
Transfers out(1) (145.6) (7.1)
Purchases 67.7 77.5
Sales (290.4) (48.9)
Settlements   (10.7)
Realized and unrealized gains (losses), net 897.6 (729.1)
Balance, end of period 2,475.1 1,868.9
Changes in unrealized gains (losses) included in earnings related to financial assets still held at the reporting date 1,197.4 (220.2)
Bonds [Member]
   
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, beginning of period 557.0 460.3
Initial consolidation of funds 262.6 13.6
Purchases 443.3 431.6
Sales (426.1) (322.7)
Settlements   (2.8)
Realized and unrealized gains (losses), net 97.4 (23.0)
Balance, end of period 934.2 557.0
Changes in unrealized gains (losses) included in earnings related to financial assets still held at the reporting date 53.5 (27.1)
Loans [Member]
   
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, beginning of period 10,152.6 10,433.5
Initial consolidation of funds 2,256.4 1,084.3
Purchases 6,497.5 5,292.9
Sales (2,402.3) (2,300.9)
Settlements (3,614.4) (4,151.1)
Realized and unrealized gains (losses), net 400.3 (206.1)
Balance, end of period 13,290.1 10,152.6
Changes in unrealized gains (losses) included in earnings related to financial assets still held at the reporting date 104.7 (264.9)
Partnerships and LLC interests [Member]
   
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, beginning of period 4,198.6 14.8
Initial consolidation of funds   4,378.4
Purchases 467.5 215.5
Sales (387.4) (159.5)
Realized and unrealized gains (losses), net 36.8 (250.6)
Balance, end of period 4,315.5 4,198.6
Changes in unrealized gains (losses) included in earnings related to financial assets still held at the reporting date 772.6 76.7
Other [Member]
   
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, beginning of period 20.8 33.9
Sales (2.0) (20.6)
Realized and unrealized gains (losses), net (11.5) 7.5
Balance, end of period 7.3 20.8
Changes in unrealized gains (losses) included in earnings related to financial assets still held at the reporting date (2.9) 5.3
Trading securities and other [Member]
   
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance, beginning of period 30.6 21.8
Purchases   5.0
Sales (15.7) (0.2)
Realized and unrealized gains (losses), net 5.1 4.0
Balance, end of period 20.0 30.6
Changes in unrealized gains (losses) included in earnings related to financial assets still held at the reporting date $ 5.1 $ 4.0