OTHER BORROWINGS (Details)	3 Months Ended
	Mar. 31, 2016 USD ($) advance	Sep. 30, 2015 USD ($) advance	Aug. 31, 2015 USD ($)
Other Borrowings [Line Items]
Total other borrowings	$ 610,884,000	$ 703,065,000
Number of FHLB advances | advance	3	2
FHLB advances weighted average interest rate	0.78%
Securities sold under agreements to repurchase	$ 190,679,000	$ 332,536,000
ClariVest Asset Management
Other Borrowings [Line Items]
Long-term line of credit	0	0
Line of credit facility, maximum borrowing capacity	$ 500,000
Prime Rate | ClariVest Asset Management
Other Borrowings [Line Items]
Debt instrument, basis spread on variable rate	1.00%
Federal Home Loan Bank Advances
Other Borrowings [Line Items]
Long-term line of credit	$ 575,000,000	550,000,000
FHLB Advance Maturing March 2017 | Federal Home Loan Bank Advances
Other Borrowings [Line Items]
Debt Instrument, face amount	250,000,000	250,000,000
FHLB Advance Two Maturing March 2017 | Federal Home Loan Bank Advances
Other Borrowings [Line Items]
Debt Instrument, face amount	300,000,000	300,000,000
FHLB Advance Maturing October 2020 | Federal Home Loan Bank Advances
Other Borrowings [Line Items]
Debt Instrument, face amount	$ 25,000,000
Stated interest rate	3.40%
RJF Credit Facility | Revolving Credit Facility
Other Borrowings [Line Items]
Long-term line of credit	$ 0	0
Line of credit facility, maximum borrowing capacity			$ 300,000,000
5.70% mortgage notes payable on our headquarters office complex, due 2023 | Mortgages
Other Borrowings [Line Items]
Long-term debt	$ 35,584,000	37,716,000
Stated interest rate	5.70%
Collateral amount	$ 46,200,000
Secured Debt
Other Borrowings [Line Items]
Long-term line of credit	0	115,000,000
Unsecured Debt
Other Borrowings [Line Items]
Long-term line of credit	$ 300,000	$ 349,000