REGULATORY CAPITAL REQUIREMENTS (Details) - USD ($) $ in Millions	Mar. 31, 2022	Sep. 30, 2021
Raymond James Financial Inc
Common Equity Tier 1 Capital (to Risk-Weighted Assets)
Actual, amount	$ 7,921	$ 7,428
Actual, ratio	23.90%	25.00%
Requirement for capital adequacy purposes, amount	$ 1,492	$ 1,337
Requirement for capital adequacy purposes, ratio (in hundredths)	4.50%	4.50%
To be well capitalized under regulatory provisions, amount	$ 2,155	$ 1,932
To be well capitalized under regulatory provisions, ratio (in hundredths)	6.50%	6.50%
Tier 1 Capital (to Risk-Weighted Assets)
Actual, amount	$ 7,921	$ 7,428
Actual, ratio	0.239	0.250
Requirement for capital adequacy purposes, amount	$ 1,989	$ 1,783
Requirement for capital adequacy purposes, ratio (in hundredths)	0.060	0.060
To be well capitalized under regulatory provisions, amount	$ 2,652	$ 2,377
To be well capitalized under regulatory provisions, ratio (in hundredths)	0.080	0.080
Total Capital (to Risk-Weighted Assets)
Actual, amount	$ 8,297	$ 7,780
Actual, ratio	0.250	0.262
Requirement for capital adequacy purposes, amount	$ 2,652	$ 2,377
Requirement for capital adequacy purposes, ratio (in hundredths)	0.080	0.080
To be well capitalized under regulatory provisions, amount	$ 3,315	$ 2,972
To be well capitalized under regulatory provisions, ratio (in hundredths)	0.100	0.100
Tier 1 leverage
Actual, amount	$ 7,921	$ 7,428
Actual, ratio	0.111	0.126
Requirement for capital adequacy purposes, amount	$ 2,854	$ 2,363
Requirement for capital adequacy purposes, ratio (in hundredths)	0.040	0.040
To be well capitalized under regulatory provisions, amount	$ 3,567	$ 2,954
To be well capitalized under regulatory provisions, ratio (in hundredths)	0.050	0.050
RJ Bank
Common Equity Tier 1 Capital (to Risk-Weighted Assets)
Actual, amount	$ 2,752	$ 2,626
Actual, ratio	12.60%	13.40%
Requirement for capital adequacy purposes, amount	$ 981	$ 883
Requirement for capital adequacy purposes, ratio (in hundredths)	4.50%	4.50%
To be well capitalized under regulatory provisions, amount	$ 1,417	$ 1,275
To be well capitalized under regulatory provisions, ratio (in hundredths)	6.50%	6.50%
Tier 1 Capital (to Risk-Weighted Assets)
Actual, amount	$ 2,752	$ 2,626
Actual, ratio	0.126	0.134
Requirement for capital adequacy purposes, amount	$ 1,308	$ 1,177
Requirement for capital adequacy purposes, ratio (in hundredths)	0.060	0.060
To be well capitalized under regulatory provisions, amount	$ 1,745	$ 1,569
To be well capitalized under regulatory provisions, ratio (in hundredths)	0.080	0.080
Total Capital (to Risk-Weighted Assets)
Actual, amount	$ 3,025	$ 2,873
Actual, ratio	0.139	0.146
Requirement for capital adequacy purposes, amount	$ 1,745	$ 1,569
Requirement for capital adequacy purposes, ratio (in hundredths)	0.080	0.080
To be well capitalized under regulatory provisions, amount	$ 2,181	$ 1,962
To be well capitalized under regulatory provisions, ratio (in hundredths)	0.100	0.100
Tier 1 leverage
Actual, amount	$ 2,752	$ 2,626
Actual, ratio	0.072	0.074
Requirement for capital adequacy purposes, amount	$ 1,524	$ 1,411
Requirement for capital adequacy purposes, ratio (in hundredths)	0.040	0.040
To be well capitalized under regulatory provisions, amount	$ 1,905	$ 1,763
To be well capitalized under regulatory provisions, ratio (in hundredths)	0.050	0.050
Raymond James & Associates Inc
Alternative Method Elected [Abstract]
Net capital as a percent of aggregate debit items (in hundredths)	42.90%	72.10%
Net capital	$ 1,271	$ 2,035
Less: required net capital	(59)	(56)
Excess net capital	$ 1,212	$ 1,979