ACQUISITIONS, TriState - Purchase Price, Fair Value Estimates of Assets Acquired and Liabilities Assumed, and Resulting Goodwill (Details) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Jun. 01, 2022	Jun. 30, 2022	Jun. 30, 2021	Sep. 30, 2021
Fair value of common stock issued:
Restricted stock awards issued		$ 28,000	$ 0
Financial instrument liabilities:
Goodwill		1,335,000		$ 660,000
Common Stock
Fair value of common stock issued:
Stock issued		778,000	0
Preferred Stock
Fair value of common stock issued:
Stock issued		120,000	$ 0
TriState Capital
Fair value of common stock issued:
Shares of RJF common stock issued (in shares)	7,861,189
Share price (in dollars per share)	$ 97.74
Restricted stock awards issued	$ 28,000
Cash consideration	359,000
Effective settlement of the Note	123,000
Total purchase price	1,408,000
Fair value of assets acquired:
Cash and cash equivalents	457,000
Financial instruments:
Available-for-sale securities	1,524,000
Derivative assets	51,000
Other investments	14,000
Bank loans, net	11,549,000
Deferred income taxes, net	26,000
Identifiable intangible assets	197,000
Other assets	226,000
All other assets acquired	45,000
Total assets acquired	14,089,000
Fair value of liabilities assumed:
Bank deposits	12,593,000
Financial instrument liabilities:
Financial instrument liabilities — Derivative liabilities	125,000
Accrued compensation, commissions and benefits	18,000
Other payables	99,000
Other borrowings	375,000
Total liabilities assumed	13,210,000
Fair value of net identifiable assets acquired	879,000
Goodwill	529,000	$ 529,000
TriState Capital | Common Stock
Fair value of common stock issued:
Fair value of RJF common stock issued for TriState Capital common stock	768,000
Other common stock consideration	10,000
Stock issued	778,000
TriState Capital | Preferred Stock
Fair value of common stock issued:
Stock issued	120,000
TriState Capital | TriState Series C Convertible Preferred Stock
Fair value of common stock issued:
Cash consideration	$ 154,000
Financial instrument liabilities:
Share price (in dollars per share)	$ 30
TriState Capital | TriState Capital Common Stock
Fair value of common stock issued:
Cash consideration	$ 189,000
Financial instrument liabilities:
Share price (in dollars per share)	$ 6