FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets:
Total securities	$ 447,438	$ 638,605
Corporate loans	5,444,004	6,506,564
Equity investments, at estimated fair value	279,346	181,378
Interests in joint ventures and partnerships, at estimated fair value	655,655	718,772
Derivatives:
Total derivative assets	34,766	33,566
Derivatives:
Total derivative liabilities	49,662	55,127
Successor Company
Assets:
Corporate debt securities	447,438	638,605
Liabilities:
Collateralized loan obligation secured notes	5,418,796	6,237,674
Successor Company | Recurring basis | Estimated Fair Value
Assets:
Total securities	447,438	638,605
Corporate loans	5,444,004	6,506,564
Equity investments, at estimated fair value	279,346	181,378
Interests in joint ventures and partnerships, at estimated fair value	655,655	718,772
Other assets		4,645
Derivatives:
Total derivative assets	34,766	33,566
Total	6,861,209	8,083,530
Liabilities:
Collateralized loan obligation secured notes	4,709,138	5,501,099
Derivatives:
Total derivative liabilities	49,662	55,127
Total	4,758,800	5,556,226
Successor Company | Recurring basis | Estimated Fair Value | Residential Mortgage- Backed Securities
Assets:
Residential mortgage-backed securities	50,139	55,184
Successor Company | Recurring basis | Estimated Fair Value | Corporate Debt Securities
Assets:
Corporate debt securities	397,299	583,421
Successor Company | Recurring basis | Estimated Fair Value | Interest rate swaps
Derivatives:
Derivative liabilities	47,504	54,071
Successor Company | Recurring basis | Estimated Fair Value | Total rate of return swaps
Derivatives:
Derivative liabilities		130
Successor Company | Recurring basis | Estimated Fair Value | Foreign exchange forward contracts
Derivatives:
Derivative assets	34,285	28,354
Derivatives:
Derivative liabilities	2,158	926
Successor Company | Recurring basis | Estimated Fair Value | Options
Derivatives:
Derivative assets	481	5,212
Successor Company | Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Equity investments, at estimated fair value	33,263	25,692
Derivatives:
Total	33,263	25,692
Successor Company | Recurring basis | Significant Other Observable Inputs (Level 2)
Assets:
Total securities	189,183	266,387
Corporate loans	5,112,378	6,159,487
Equity investments, at estimated fair value	87,206	73,967
Other assets		4,645
Derivatives:
Total derivative assets	34,285	28,354
Total	5,423,052	6,532,840
Liabilities:
Collateralized loan obligation secured notes	4,709,138	0
Derivatives:
Total derivative liabilities	49,662	55,127
Total	4,758,800	55,127
Successor Company | Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate Debt Securities
Assets:
Corporate debt securities	189,183	266,387
Successor Company | Recurring basis | Significant Other Observable Inputs (Level 2) | Interest rate swaps
Derivatives:
Derivative liabilities	47,504	54,071
Successor Company | Recurring basis | Significant Other Observable Inputs (Level 2) | Total rate of return swaps
Derivatives:
Derivative liabilities		130
Successor Company | Recurring basis | Significant Other Observable Inputs (Level 2) | Foreign exchange forward contracts
Derivatives:
Derivative assets	34,285	28,354
Derivatives:
Derivative liabilities	2,158	926
Successor Company | Recurring basis | Significant Unobservable Inputs (Level 3)
Assets:
Total securities	258,255	372,218
Corporate loans	331,626	347,077
Equity investments, at estimated fair value	158,877	81,719
Interests in joint ventures and partnerships, at estimated fair value	655,655	718,772
Derivatives:
Total derivative assets	481	5,212
Total	1,404,894	1,524,998
Liabilities:
Collateralized loan obligation secured notes	0	5,501,099
Derivatives:
Total	0	5,501,099
Successor Company | Recurring basis | Significant Unobservable Inputs (Level 3) | Residential Mortgage- Backed Securities
Assets:
Residential mortgage-backed securities	50,139	55,184
Successor Company | Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate Debt Securities
Assets:
Corporate debt securities	208,116	317,034
Successor Company | Recurring basis | Significant Unobservable Inputs (Level 3) | Options
Derivatives:
Derivative assets	$ 481	$ 5,212