CONDENSED FINANCIAL INFORMATION (PARENT COMPANY ONLY), Condensed Statement of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Interest income	$ 1,508	$ 823	$ 1,000
All other	61	124	21
Total revenues	11,308	9,910	8,168
Interest expense	(305)	(150)	(178)
Net revenues	11,003	9,760	7,990
Non-interest expenses:
Compensation and benefits	7,329	6,584	5,465
Non-compensation expenses:
Communications and information processing	506	429	393
Occupancy and equipment	252	232	225
Business development	186	111	134
Losses on extinguishment of debt	0	98	0
Other	325	295	250
Total non-compensation expenses	1,652	1,385	1,473
Provision for income taxes	513	388	234
Net income	1,509	1,403	818
Preferred stock dividends	4	0	0
Net income available to common shareholders, basic	1,505	1,403	818
Net income available to common shareholders, diluted	1,505	1,403	818
RJF Parent Company
Revenues:
Dividends from non-bank subsidiaries	2,002	257	634
Dividends from bank subsidiaries	60	0	130
Interest from subsidiaries	23	9	18
Interest income	3	1	3
All other	17	21	23
Total revenues	2,105	288	808
Interest expense	(93)	(97)	(87)
Net revenues	2,012	191	721
Non-interest expenses:
Compensation and benefits	98	81	63
Non-compensation expenses:
Communications and information processing	6	5	6
Occupancy and equipment	1	1	1
Business development	20	19	18
Losses on extinguishment of debt	0	98	0
Other	64	30	23
Intercompany allocations and charges	(8)	(14)	(16)
Total non-compensation expenses	83	139	32
Total non-interest expenses	181	220	95
Pre-tax income/(loss) before equity in undistributed net income of subsidiaries	1,831	(29)	626
Provision for income taxes	(20)	(99)	(58)
Income before equity in undistributed net income of subsidiaries	1,851	70	684
Equity in undistributed net income of subsidiaries	(342)	1,333	134
Net income	1,509	1,403	818
Preferred stock dividends	4	0	0
Net income available to common shareholders, basic	$ 1,505	$ 1,403	$ 818