CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Millions	Total	Common stock, par value $.01 per share	Additional paid-in capital	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	Treasury stock	Accumulated other comprehensive income/ (loss)	Total equity attributable to Raymond James Financial, Inc.	Noncontrolling interests
Balance beginning of period at Sep. 30, 2019		$ 2	$ 1,938	$ 5,874	$ 0	$ (1,210)	$ (23)		$ 62
Changes in Shareholders' Equity:
Share issuances		0
Employee stock purchases			17
Exercise of stock options and vesting of restricted stock units, net of forfeitures			(71)			81
Restricted stock, stock option and restricted stock unit expense			69
Net income attributable to Raymond James Financial, Inc.	$ 437			437
Cash dividends declared (see Note 22)				(106)
Purchases/surrenders						(222)
Other comprehensive income, net of tax	12						12
Net income/(loss) attributable to noncontrolling interests									(24)
Other									(2)
Balance end of period at Mar. 31, 2020	$ 6,834	2	1,953	6,205		(1,351)	(11)	$ 6,798	36
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Balance beginning of period at Sep. 30, 2019		2	1,938	5,874	0	(1,210)	(23)		62
Balance end of period at Sep. 30, 2020	$ 7,176	2	2,007	6,484	(35)	(1,390)	11		62
Balance beginning of period at Dec. 31, 2019		2	1,922	6,086	0	(1,163)	(5)		61
Changes in Shareholders' Equity:
Share issuances		0
Employee stock purchases			11
Exercise of stock options and vesting of restricted stock units, net of forfeitures			(8)			15
Restricted stock, stock option and restricted stock unit expense			28
Net income attributable to Raymond James Financial, Inc.	169			169
Cash dividends declared (see Note 22)				(50)
Purchases/surrenders						(203)
Other comprehensive income, net of tax	(6)						(6)
Net income/(loss) attributable to noncontrolling interests									(23)
Other									(2)
Balance end of period at Mar. 31, 2020	6,834	2	1,953	6,205		(1,351)	(11)	6,798	36
Balance beginning of period at Sep. 30, 2020	7,176	2	2,007	6,484	(35)	(1,390)	11		62
Changes in Shareholders' Equity:
Share issuances		0
Employee stock purchases			15
Exercise of stock options and vesting of restricted stock units, net of forfeitures			(66)			65
Restricted stock, stock option and restricted stock unit expense			72
Net income attributable to Raymond James Financial, Inc.	667			667
Cash dividends declared (see Note 22)				(112)
Purchases/surrenders						(79)
Other comprehensive income, net of tax	(49)						(49)
Net income/(loss) attributable to noncontrolling interests									12
Other									(29)
Balance end of period at Mar. 31, 2021	7,637	2	2,028	7,004		(1,404)	(38)	7,592	45
Balance beginning of period at Dec. 31, 2020		2	1,996	6,702	$ 0	(1,354)	17		75
Changes in Shareholders' Equity:
Share issuances		0
Employee stock purchases			9
Exercise of stock options and vesting of restricted stock units, net of forfeitures			(7)			11
Restricted stock, stock option and restricted stock unit expense			30
Net income attributable to Raymond James Financial, Inc.	355			355
Cash dividends declared (see Note 22)				(53)
Purchases/surrenders						(61)
Other comprehensive income, net of tax	(55)						(55)
Net income/(loss) attributable to noncontrolling interests									(1)
Other									(29)
Balance end of period at Mar. 31, 2021	$ 7,637	$ 2	$ 2,028	$ 7,004		$ (1,404)	$ (38)	$ 7,592	$ 45