INVESTMENTS (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Investments
Fair Value	$ 41,777,736	$ 40,697,848
Private Equity Investments
Investments
Fair Value	34,495,418	34,114,623
Private Equity Investments | Health Care
Investments
Fair Value	7,516,025	7,708,080
Private Equity Investments | Retail
Investments
Fair Value	4,995,804	4,970,092
Private Equity Investments | Technology
Investments
Fair Value	4,522,933	4,566,236
Private Equity Investments | Consumer Products
Investments
Fair Value	3,549,119	3,557,963
Private Equity Investments | Other
Investments
Fair Value	$ 13,911,537	$ 13,312,252