XML 55 R72.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value Measurements - Changes in Level 3 Assets and Liabilities Measured at Estimated Fair Value on Recurring Basis (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Other Assets and Other Liabilities [Member]
       
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Beginning Balance $ 36,119 $ 20,435 $ 47,859 $ 6,923
Total gains (losses) realized/unrealized:        
Included in earnings 15,500 45,486 58,812 72,517
Transfers in and/or out of Level 3 (44,211) (31,870) (99,263) (45,389)
Ending Balance 7,408 34,051 7,408 34,051
Changes in unrealized gains (losses) included in earnings related to assets still held at end of period 4,123 28,904 5,132 33,647
Privately Issued [Member]
       
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Beginning Balance 993,247 1,124,130 1,023,886 1,151,285
Total gains (losses) realized/unrealized:        
Included in earnings (46,302) (14,627) (56,102) (22,304)
Included in other comprehensive income 90,203 23,376 116,584 48,794
Sales (978,608)   (978,608)  
Settlements (53,268) (52,360) (100,488) (97,256)
Ending Balance 5,272 1,080,519 5,272 1,080,519
Changes in unrealized gains (losses) included in earnings related to assets still held at end of period   (14,627)   (22,304)
Collateralized Debt Obligations [Member]
       
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Beginning Balance 61,718 58,184 61,869 52,500
Total gains (losses) realized/unrealized:        
Included in other comprehensive income (1,277) (2,712) (537) 3,711
Settlements (525) (374) (1,416) (1,113)
Ending Balance $ 59,916 $ 55,098 $ 59,916 $ 55,098