CONDENSED FINANCIAL INFORMATION (PARENT COMPANY ONLY), Condensed Statement of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Interest income	$ 823	$ 1,000	$ 1,281
Other	124	21	64
Total revenues	9,910	8,168	8,023
Interest expense	(150)	(178)	(283)
Net revenues	9,760	7,990	7,740
Non-interest expenses:
Compensation and benefits	6,583	5,465	5,087
Non-compensation expenses:
Communications and information processing	429	393	373
Occupancy and equipment	232	225	218
Business development	111	134	194
Losses on extinguishment of debt	98	0	0
Other	287	243	277
Total non-compensation expenses	1,386	1,473	1,278
Provision for income taxes	388	234	341
Net income	1,403	818	1,034
RJF Parent Company
Revenues:
Dividends from non-bank subsidiaries	257	634	632
Dividends from bank subsidiary	0	130	190
Interest from subsidiaries	9	18	31
Interest income	1	3	7
Other	21	23	20
Total revenues	288	808	880
Interest expense	(97)	(87)	(75)
Net revenues	191	721	805
Non-interest expenses:
Compensation and benefits	81	63	73
Non-compensation expenses:
Communications and information processing	5	6	8
Occupancy and equipment	1	1	1
Business development	19	18	20
Losses on extinguishment of debt	98	0	0
Other	30	23	16
Intercompany allocations and charges	(14)	(16)	(24)
Total non-compensation expenses	139	32	21
Total non-interest expenses	220	95	94
Pre-tax income/(loss) before equity in undistributed net income of subsidiaries	(29)	626	711
Provision for income taxes	(99)	(58)	(31)
Income before equity in undistributed net income of subsidiaries	70	684	742
Equity in undistributed net income of subsidiaries	1,333	134	292
Net income	$ 1,403	$ 818	$ 1,034