BORROWINGS (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Dec. 18, 2014	Sep. 16, 2014
Details of Company's borrowings
Carrying value	$ 5,442,836,000	$ 5,501,099,000
Successor Company
Details of Company's borrowings
Total borrowings	6,080,626,000	6,237,674,000
Total borrowings, carrying value	6,104,349,000	6,162,530,000
Collateral amount	5,697,631,000	6,528,921,000
Successor Company | CLO 2005-1 secured notes
Details of Company's borrowings
Par	142,354,000	192,384,000
Carrying value	$ 144,804,000	$ 192,260,000
Weighted Average Borrowing Rate (as a percent)	2.28%	1.84%
Weighted Average Remaining Maturity (in days)	666 days	847 days
Collateral amount	$ 47,752,000	$ 224,716,000
Restricted cash included in collateral	111,300,000
Successor Company | CLO 2005-2 secured notes
Details of Company's borrowings
Par	195,433,000	242,928,000
Carrying value	$ 198,911,000	$ 242,365,000
Weighted Average Borrowing Rate (as a percent)	1.19%	0.68%
Weighted Average Remaining Maturity (in days)	880 days	1061 days
Collateral amount	$ 276,947,000	$ 381,362,000
Successor Company | CLO 2006-1 senior secured notes
Details of Company's borrowings
Par		166,841,000
Carrying value		$ 166,710,000
Weighted Average Borrowing Rate (as a percent)		1.28%
Weighted Average Remaining Maturity (in days)		1333 days
Collateral amount		$ 400,165,000
Successor Company | CLO 2007-1 secured notes
Details of Company's borrowings
Par	1,998,284,000	1,906,409,000
Carrying value	$ 2,051,331,000	$ 1,891,228,000
Weighted Average Borrowing Rate (as a percent)	1.70%	0.80%
Weighted Average Remaining Maturity (in days)	2146 days	2327 days
Collateral amount	$ 2,146,491,000	$ 2,182,078,000
Successor Company | CLO 2007-1 mezzanine notes
Details of Company's borrowings
Par		489,723,000
Carrying value		$ 486,575,000
Weighted Average Borrowing Rate (as a percent)		3.84%
Weighted Average Remaining Maturity (in days)		2327 days
Collateral amount		$ 560,538,000
Successor Company | CLO 2007-1 subordinated notes
Details of Company's borrowings
Par	134,468,000	134,468,000
Carrying value	$ 111,080,000	$ 119,112,000
Weighted Average Borrowing Rate (as a percent)	15.19%	13.75%
Weighted Average Remaining Maturity (in days)	2146 days	2327 days
Collateral amount	$ 144,441,000	$ 153,912,000
Successor Company | CLO 2007-A subordinated notes
Details of Company's borrowings
Par	15,096,000	15,096,000
Carrying value	$ 23,309,000	$ 25,921,000
Weighted Average Borrowing Rate (as a percent)	19.08%	88.02%
Weighted Average Remaining Maturity (in days)	838 days	1019 days
Collateral amount	$ 64,867,000	$ 66,044,000
Successor Company | CLO 2011-1 senior debt
Details of Company's borrowings
Par	371,681,000	402,515,000
Carrying value	$ 371,681,000	$ 402,515,000
Weighted Average Borrowing Rate (as a percent)	1.63%	1.58%
Weighted Average Remaining Maturity (in days)	1873 days	1323 days
Collateral amount	$ 355,962,000	$ 508,625,000
Successor Company | CLO 2012-1 secured notes
Details of Company's borrowings
Par	367,500,000	367,500,000
Carrying value	$ 368,211,000	$ 364,063,000
Weighted Average Borrowing Rate (as a percent)	2.38%	2.33%
Weighted Average Remaining Maturity (in days)	3456 days	3637 days
Collateral amount	$ 384,263,000	$ 365,662,000
Successor Company | CLO 2012-1 subordinated notes
Details of Company's borrowings
Par	18,000,000	18,000,000
Carrying value	$ 13,208,000	$ 12,986,000
Weighted Average Borrowing Rate (as a percent)	17.18%	16.86%
Weighted Average Remaining Maturity (in days)	3456 days	3637 days
Collateral amount	$ 18,821,000	$ 17,910,000
Successor Company | CLO 2013-1 secured notes
Details of Company's borrowings
Par	458,500,000	458,500,000
Carrying value	$ 456,926,000	$ 441,153,000
Weighted Average Borrowing Rate (as a percent)	2.01%	1.96%
Weighted Average Remaining Maturity (in days)	3668 days	3849 days
Collateral amount	$ 506,827,000	$ 477,691,000
Successor Company | CLO 2013-2 secured notes
Details of Company's borrowings
Par	339,250,000	339,250,000
Carrying value	$ 339,536,000	$ 331,383,000
Weighted Average Borrowing Rate (as a percent)	2.26%	2.21%
Weighted Average Remaining Maturity (in days)	3860 days	4041 days
Collateral amount	$ 365,069,000	$ 357,722,000
Successor Company | CLO 9 secured notes
Details of Company's borrowings
Par	463,750,000	463,750,000		$ 463,800,000.0
Carrying value	$ 456,318,000	$ 449,349,000
Weighted Average Borrowing Rate (as a percent)	2.28%	2.28%
Weighted Average Remaining Maturity (in days)	4125 days	4306 days
Collateral amount	$ 483,080,000	$ 474,072,000
Successor Company | CLO 9 subordinated notes
Details of Company's borrowings
Par	15,000,000	15,000,000		$ 15,000,000.0
Carrying value	$ 13,382,000	$ 13,531,000
Weighted Average Borrowing Rate (as a percent)	4.09%	0.00%
Weighted Average Remaining Maturity (in days)	4125 days	4306 days
Collateral amount	$ 15,625,000	$ 15,334,000
Successor Company | CLO 10 senior notes
Details of Company's borrowings
Par	368,000,000	368,000,000	$ 368,000,000.0
Carrying value	$ 365,979,000	$ 361,948,000
Weighted Average Borrowing Rate (as a percent)	2.54%	2.50%
Weighted Average Remaining Maturity (in days)	3821 days	4002 days
Collateral amount	$ 389,217,000	$ 343,090,000
Successor Company | CLO 11 senior secured notes
Details of Company's borrowings
Par	507,750,000
Carrying value	$ 503,297,000
Weighted Average Borrowing Rate (as a percent)	2.33%
Weighted Average Remaining Maturity (in days)	4307 days
Collateral amount	$ 472,008,000
Successor Company | CLO 11 subordinated notes
Details of Company's borrowings
Par	28,250,000
Carrying value	$ 24,863,000
Weighted Average Borrowing Rate (as a percent)	0.00%
Weighted Average Remaining Maturity (in days)	4307 days
Collateral amount	$ 26,261,000
Successor Company | Collaterized loan obligation secured notes
Details of Company's borrowings
Par	5,423,316,000	5,580,364,000
Carrying value	5,442,836,000	5,501,099,000
Collateral amount	5,697,631,000	6,528,921,000
Successor Company | 8.375% Senior notes
Details of Company's borrowings
Par	258,750,000	258,750,000
Carrying value	$ 290,269,000	$ 290,861,000
Weighted Average Borrowing Rate (as a percent)	8.38%	8.38%
Weighted Average Remaining Maturity (in days)	9635 days	9816 days
Successor Company | 7.500% Senior notes
Details of Company's borrowings
Par	$ 115,043,000	$ 115,043,000
Carrying value	$ 123,506,000	$ 123,663,000
Weighted Average Borrowing Rate (as a percent)	7.50%	7.50%
Weighted Average Remaining Maturity (in days)	9760 days	9941 days
Successor Company | Junior subordinated notes
Details of Company's borrowings
Par	$ 283,517,000	$ 283,517,000
Carrying value	$ 247,738,000	$ 246,907,000
Weighted Average Borrowing Rate (as a percent)	5.41%	5.39%
Weighted Average Remaining Maturity (in days)	7768 days	7949 days