FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 3) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended			4 Months Ended	5 Months Ended	9 Months Ended
	Apr. 30, 2014	Jun. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2014	Apr. 30, 2014	Sep. 30, 2014	Sep. 30, 2015
Successor Company
Reconciliation of liabilities measured on Level 3 basis
Transfers from Level 1 into Level 2			$ 0	$ 0			$ 0	$ 0
Transfers from Level 2 into Level 1			0	0			0	0
Successor Company | Collateralized Loan Obligation Secured Notes
Reconciliation of liabilities measured on Level 3 basis
Balance at the beginning of the period		$ 5,663,665		5,547,914			5,663,665	5,501,099
Included in earnings		28,669		5,468
Transfers into Level 3		0
Transfers out of level 3		0		0				(5,501,099)
Purchases		52,594		471,441
Settlements		(197,014)		(581,237)
Balance at the end of the period	$ 5,663,665	5,547,914	0	5,443,586		$ 5,663,665	5,443,586	0
Change in unrealized gains or losses for the period included in earnings for liabilities held at the end of the reporting period				5,324			33,993	0
Successor Company | Corporate Debt Securities
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period		156,500	225,891	169,592			156,500	317,034
Included in earnings		2,185	(11,727)	(7,751)				(23,486)
Purchases		20,000	0	29,780				0
Sales		(3,966)	(9,086)	(6,870)				(89,665)
Settlements		(5,127)	3,038	29,792				4,233
Balance at the end of the period	156,500	169,592	208,116	214,543		156,500	214,543	208,116
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			(11,727)	(7,751)			(5,566)	(26,145)
Successor Company | Residential Mortgage- Backed Securities
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period		59,623	52,389	59,242			59,623	55,184
Included in earnings		1,359	2,454	1,421				5,469
Sales		0		0
Settlements		(1,740)	(4,704)	(3,517)				(10,514)
Balance at the end of the period	59,623	59,242	50,139	57,146		59,623	57,146	50,139
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			581	(185)			438	758
Successor Company | Corporate loans, at estimated fair value
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period		294,218	341,047	300,282			294,218	347,077
Included in earnings		2,951	(6,882)	(10,084)				(64,930)
Purchases		1,261	0	1,327				12,307
Sales		(2,912)	0	0				(25,511)
Settlements		4,764	(2,539)	(3,758)				62,683
Balance at the end of the period	294,218	300,282	331,626	287,767		294,218	287,767	331,626
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			(6,882)	(10,084)			(7,092)	(64,043)
Successor Company | Equity Investments, at Estimated Fair Value
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period		157,765	166,879	141,160			157,765	81,719
Included in earnings		2,160	(8,453)	(3,265)				(29,567)
Transfers out of Level 3		(1,230)		0
Settlements		(17,535)	451	(96,125)				106,725
Balance at the end of the period	157,765	141,160	158,877	41,770		157,765	41,770	158,877
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			(8,453)	(3,265)			109	(28,871)
Successor Company | Interests in Joint Ventures and Partnerships
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period		472,467	739,597	515,556			472,467	718,772
Included in earnings		21,690	(63,887)	8,639				(84,045)
Purchases		27,466	3,767	15,381				53,133
Sales				(13,795)
Settlements		(6,067)	(23,822)	211,540				(32,205)
Balance at the end of the period	472,467	515,556	655,655	737,321		472,467	737,321	655,655
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			(63,887)	8,639			26,272	(84,045)
Successor Company | Foreign Exchange Options, Net
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period		8,854		7,056			8,854
Included in earnings		(1,798)		(7,056)
Balance at the end of the period	8,854	7,056		0		8,854	0
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period				0			0
Successor Company | Common stock warrants
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period			411					0
Included in earnings			(411)					(2,412)
Settlements			0					2,412
Balance at the end of the period			0					0
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			(411)					(2,412)
Successor Company | Options
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period		6,684	2,910	6,175			6,684	5,212
Included in earnings		(509)	(2,429)	(137)				(4,731)
Balance at the end of the period	6,684	6,175	481	6,038		6,684	6,038	481
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period			$ (2,429)	(137)			(646)	$ (4,731)
Predecessor Company
Reconciliation of liabilities measured on Level 3 basis
Transfers from Level 1 into Level 2	0					0
Transfers from Level 2 into Level 1				$ 0			0
Predecessor Company | Securities Available- For-Sale
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	23,528	30,510			$ 23,401	23,401	30,510
Included in earnings	44				22
Included in other comprehensive income	33				121
Transfers into Level 3	6,937				0
Settlements	(32)				(16)
Balance at the end of the period	30,510				23,528	30,510
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period						66
Predecessor Company | Other Securities, at Estimated Fair Value
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	125,511	125,990			107,530	107,530	125,990
Included in earnings	479				3,059
Purchases	0				25,000
Settlements	0				(10,078)
Balance at the end of the period	125,990				125,511	125,990
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period						2,683
Predecessor Company | Residential Mortgage- Backed Securities
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	58,753	59,623			76,004	76,004	59,623
Included in earnings	1,416				3,088
Sales					(17,810)
Settlements	(546)				(2,529)
Balance at the end of the period	59,623				58,753	59,623
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period						5,242
Predecessor Company | Corporate loans, at estimated fair value
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	153,395	156,907			152,800	152,800	156,907
Included in earnings	1,240				(5,123)
Purchases	0				8,822
Settlements	2,272				(3,104)
Balance at the end of the period	156,907				153,395	156,907
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period						4,445
Predecessor Company | Equity Investments, at Estimated Fair Value
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	258,977	152,070			138,059	138,059	152,070
Included in earnings	12,126				9,076
Transfers out of Level 3	(119,033)				(8,751)
Settlements	0				120,593
Balance at the end of the period	152,070				258,977	152,070
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period						20,499
Predecessor Company | Interests in Joint Ventures and Partnerships
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	494,420	470,693			415,247	415,247	470,693
Included in earnings	(24,158)				22,377
Purchases	1,615				42,683
Settlements	(1,184)				14,113
Balance at the end of the period	470,693				494,420	470,693
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period						(1,781)
Predecessor Company | Foreign Exchange Options, Net
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	8,128	8,854			8,941	8,941	8,854
Included in earnings	726				(813)
Balance at the end of the period	8,854				8,128	8,854
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period						(87)
Predecessor Company | Options
Reconciliation of assets measured on Level 3 basis
Balance at the beginning of the period	6,492	$ 6,684			6,794	6,794	$ 6,684
Included in earnings	192				(302)
Balance at the end of the period	$ 6,684				$ 6,492	6,684
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the reporting period						$ (110)