MERGER TRANSACTION (Details) (USD $)	0 Months Ended
	Apr. 30, 2014	Dec. 16, 2013	Apr. 30, 2014
KFN | KKR & Co.
Merger transaction
Transaction costs	$ 24,200,000		$ 24,200,000
KFN | KKR & Co. | General, administrative and directors expenses
Merger transaction
Transaction costs	22,700,000		22,700,000
Predecessor Company | Phantom share
Merger transaction
Exchange ratio of share based awards under merger transaction	0.51
Predecessor Company | KFN | KKR & Co.
Merger transaction
Exchange ratio of share based awards under merger transaction	0.51	0.51
Assets acquired:
Cash and cash equivalents	210,413,000		210,413,000
Restricted cash and cash equivalents	649,967,000		649,967,000
Securities	541,149,000		541,149,000
Corporate loans	6,649,054,000		6,649,054,000
Equity investments	297,054,000		297,054,000
Oil and gas properties, net	505,238,000		505,238,000
Interests in joint ventures and partnerships	491,324,000		491,324,000
Derivative assets	26,383,000		26,383,000
Interest and principal receivable	35,992,000		35,992,000
Other assets	208,144,000		208,144,000
Total assets	9,614,718,000		9,614,718,000
Liabilities assumed:
Collateralized loan obligation secured notes	5,663,666,000		5,663,666,000
Credit facilities	63,189,000		63,189,000
Senior notes	415,538,000		415,538,000
Junior subordinated notes	245,782,000		245,782,000
Accounts payable, accrued expenses and other liabilities	357,084,000		357,084,000
Accrued interest payable	17,647,000		17,647,000
Derivative liabilities	88,356,000		88,356,000
Total liabilities	6,851,262,000		6,851,262,000
Fair value of preferred shares	378,983,000		378,983,000
Fair value of net assets acquired	2,384,473,000		2,384,473,000
Less: Purchase price	2,369,559,000
Bargain purchase gain	$ 14,914,000
Predecessor Company | KFN | KKR & Co. | Restricted common shares
Merger transaction
Exchange ratio of share based awards under merger transaction	0.51