CONDENSED FINANCIAL INFORMATION (PARENT COMPANY ONLY), Condensed Statement of Income (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Interest income	$ 4,232	$ 3,748	$ 1,508
All other	62	78	61
Total revenues	14,923	12,992	11,308
Interest expense	(2,102)	(1,373)	(305)
Net revenues	12,821	11,619	11,003
Non-interest expenses:
Compensation, commissions and benefits	8,213	7,299	7,329
Non-compensation expenses:
Communications and information processing	662	599	506
Occupancy and equipment	296	271	252
Business development	257	242	186
Professional fees	150	145	131
Other	373	500	325
Total non-compensation expenses	1,965	2,040	1,652
Income tax benefit	575	541	513
Net income	2,068	1,739	1,509
Preferred stock dividends	5	6	4
Net income available to common shareholders, basic	2,063	1,733	1,505
Net income available to common shareholders, diluted	2,063	1,733	1,505
RJF Parent Company
Revenues:
Dividends from non-bank subsidiaries	911	874	2,002
Dividends from bank subsidiaries	500	375	60
Interest from subsidiaries	98	84	23
Interest income	25	20	3
All other	21	18	17
Total revenues	1,555	1,371	2,105
Interest expense	(94)	(93)	(93)
Net revenues	1,461	1,278	2,012
Non-interest expenses:
Compensation, commissions and benefits	96	86	98
Non-compensation expenses:
Communications and information processing	8	9	6
Occupancy and equipment	1	1	1
Business development	23	21	20
Intercompany allocations and charges	7	2	(8)
Professional fees	7	7	17
Other	38	3	47
Total non-compensation expenses	84	43	83
Total non-interest expenses	180	129	181
Pre-tax income before equity in undistributed net income of subsidiaries	1,281	1,149	1,831
Income tax benefit	(98)	(35)	(20)
Income before equity in undistributed net income of subsidiaries	1,379	1,184	1,851
Equity in undistributed net income of subsidiaries	689	555	(342)
Net income	2,068	1,739	1,509
Preferred stock dividends	5	6	4
Net income available to common shareholders, basic	$ 2,063	$ 1,733	$ 1,505