COMMITMENTS AND CONTINGENCIES (Details) (USD $)	Mar. 31, 2013
Investment Commitments
Unfunded commitments to private equity and other investment vehicles	$ 653,300,000
Unfunded commitment to private equity funds	100,000,000
Unfunded commitments of capital market business	534,800,000
Contingent Repayment Guarantees
Private equity fund carried interest amount subject to clawback provision assuming liquidation at fair value	0
Clawback obligation amount	966,900,000
Percentage of net losses on investment required capital to be contributed by general partners	20.00%
Private equity vehicles liquidation value for contingent repayment obligation of the general partners	0
Contingent repayment obligation of the general partners if private equity vehicles liquidated at fair value	0
Contingent repayment obligation of the general partners if private equity vehicles liquidated at zero value	611,500,000
Clawback receivable maximum potential amount	223,600,000
Clawback obligations, amount due from noncontrolling interest holders	0
Private equity fund carried interest amount subject to clawback provision	$ 0