INVESTMENTS - Equity-method Investments (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)
Assets:
Cash and cash-equivalents	$ 3,721,911	$ 3,721,911
Investments, at fair value	42,022,758	42,022,758
Other assets	1,707,581	1,707,581
Total assets	47,452,250	47,452,250
Liabilities and Capital:
Debt obligations	7,529,572	7,529,572
Other liabilities	1,699,642	1,699,642
Total liabilities	9,229,214	9,229,214
Total capital	38,223,036	38,223,036
Total liabilities and capital	47,452,250	47,452,250
Statements of Operations:
Revenues / investment income	607,105	1,632,204
Interest expense	(48,851)	(129,020)
Other expenses	(207,052)	(644,791)
Net realized and unrealized gain on investments	1,771,018	2,609,742
Net income	$ 2,122,220	$ 3,468,135