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Summary of Changes in Financial Liabilities Measured at Fair Value for Which Level III Inputs Were Used (Detail) (Level 3, USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2014
|
Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
| Balance, Beginning of Period | $ 6,882,595 | $ 9,808,630 | $ 8,913,007 | $ 11,541,607 | ||||
| Transfer In Due to Consolidation and Acquisition | 525,438 | [1] | 1,083,638 | [1] | ||||
| Transfer In (Out) Due to Deconsolidation | (882,510) | (2,509,154) | (1,251,767) | |||||
| Issuances | 2,425 | 42,197 | 4,255 | |||||
| Settlements | (570,785) | (788,098) | (1,569,526) | (1,492,821) | ||||
| Realized (Gains) Losses, Net | 1,822 | 2,833 | 5,914 | 2,833 | ||||
| Changes in Unrealized (Gains) Losses Included in Earnings Related to Liabilities Still Held at the Reporting Date | (273,640) | 221,097 | (283,156) | 442,780 | ||||
| Balance, End of Period | 5,682,920 | 9,246,887 | 5,682,920 | 9,246,887 | ||||
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Collateralized Loan Obligations Senior Notes
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
| Balance, Beginning of Period | 6,407,838 | 9,189,948 | 8,302,572 | 10,695,136 | ||||
| Transfer In Due to Consolidation and Acquisition | 495,610 | [1] | 967,629 | [1] | ||||
| Transfer In (Out) Due to Deconsolidation | (778,461) | (2,231,853) | (1,100,842) | |||||
| Issuances | 1,503 | 32,197 | 2,558 | |||||
| Settlements | (570,785) | (787,918) | (1,569,416) | (1,492,295) | ||||
| Realized (Gains) Losses, Net | 1,822 | 2,833 | 5,914 | 2,833 | ||||
| Changes in Unrealized (Gains) Losses Included in Earnings Related to Liabilities Still Held at the Reporting Date | (233,376) | 235,141 | (184,395) | 534,117 | ||||
| Balance, End of Period | 5,322,648 | 8,641,507 | 5,322,648 | 8,641,507 | ||||
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Collateralized Loan Obligations Subordinated Notes
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||||||
| Balance, Beginning of Period | 474,757 | 618,682 | 610,435 | 846,471 | ||||
| Transfer In Due to Consolidation and Acquisition | 29,828 | [1] | 116,009 | [1] | ||||
| Transfer In (Out) Due to Deconsolidation | (104,049) | (277,301) | (150,925) | |||||
| Issuances | 922 | 10,000 | 1,697 | |||||
| Settlements | (180) | (110) | (526) | |||||
| Changes in Unrealized (Gains) Losses Included in Earnings Related to Liabilities Still Held at the Reporting Date | (40,264) | (14,044) | (98,761) | (91,337) | ||||
| Balance, End of Period | $ 360,272 | $ 605,380 | $ 360,272 | $ 605,380 | ||||
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