REGULATORY CAPITAL REQUIREMENTS, RJF and RJB (Details) $ in Millions	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Requirements of broker-dealer subsidiaries [Abstract]
Minimum net capital allowed under the alternative net capital requirement	$ 1.5
Percentage of aggregate debit items allowed for net capital, under the alternative net capital requirement	0.02
Raymond James Financial Inc
Tier 1 leverage
Actual, amount	$ 8,480.0	$ 7,428.0
Actual, ratio	0.103	0.126
Requirement for capital adequacy purposes, amount	$ 3,304.0	$ 2,363.0
Requirement for capital adequacy purposes, ratio	0.040	0.040
To be well-capitalized under regulatory provisions, amount	$ 4,130.0	$ 2,954.0
To be well-capitalized under regulatory provisions, ratio	0.050	0.050
Tier 1 capital
Actual, amount	$ 8,480.0	$ 7,428.0
Actual, ratio	0.192	0.250
Requirement for capital adequacy purposes, amount	$ 2,651.0	$ 1,783.0
Requirement for capital adequacy purposes, ratio	0.060	0.060
To be well-capitalized under regulatory provisions, amount	$ 3,534.0	$ 2,377.0
To be well-capitalized under regulatory provisions, ratio	0.080	0.080
CET1
Actual, amount	$ 8,380.0	$ 7,428.0
Actual, ratio	0.190	0.250
Requirement for capital adequacy purposes, amount	$ 1,988.0	$ 1,337.0
Requirement for capital adequacy purposes, ratio	0.045	0.045
To be well-capitalized under regulatory provisions, amount	$ 2,871.0	$ 1,932.0
To be well-capitalized under regulatory provisions, ratio	0.065	0.065
Total capital
Actual, amount	$ 9,031.0	$ 7,780.0
Actual ratio	0.204	0.262
Requirement for capital adequacy purposes, amount	$ 3,534.0	$ 2,377.0
Requirement for capital adequacy purposes, ratio	0.080	0.080
To be well-capitalized under regulatory provisions, amount	$ 4,418.0	$ 2,972.0
To be well-capitalized under regulatory provisions, ratio	0.100	0.100
Bank
Tier 1 leverage
Actual, amount	$ 2,998.0	$ 2,626.0
Actual, ratio	0.071	0.074
Requirement for capital adequacy purposes, amount	$ 1,695.0	$ 1,411.0
Requirement for capital adequacy purposes, ratio	0.040	0.040
To be well-capitalized under regulatory provisions, amount	$ 2,119.0	$ 1,763.0
To be well-capitalized under regulatory provisions, ratio	0.050	0.050
Tier 1 capital
Actual, amount	$ 2,998.0	$ 2,626.0
Actual, ratio	0.121	0.134
Requirement for capital adequacy purposes, amount	$ 1,485.0	$ 1,177.0
Requirement for capital adequacy purposes, ratio	0.060	0.060
To be well-capitalized under regulatory provisions, amount	$ 1,979.0	$ 1,569.0
To be well-capitalized under regulatory provisions, ratio	0.080	0.080
CET1
Actual, amount	$ 2,998.0	$ 2,626.0
Actual, ratio	0.121	0.134
Requirement for capital adequacy purposes, amount	$ 1,113.0	$ 883.0
Requirement for capital adequacy purposes, ratio	0.045	0.045
To be well-capitalized under regulatory provisions, amount	$ 1,608.0	$ 1,275.0
To be well-capitalized under regulatory provisions, ratio	0.065	0.065
Total capital
Actual, amount	$ 3,308.0	$ 2,873.0
Actual ratio	0.134	0.146
Requirement for capital adequacy purposes, amount	$ 1,979.0	$ 1,569.0
Requirement for capital adequacy purposes, ratio	0.080	0.080
To be well-capitalized under regulatory provisions, amount	$ 2,474.0	$ 1,962.0
To be well-capitalized under regulatory provisions, ratio	0.100	0.100
TriState Capital Bank
Tier 1 leverage
Actual, amount	$ 1,093.0
Actual, ratio	0.073
Requirement for capital adequacy purposes, amount	$ 601.0
Requirement for capital adequacy purposes, ratio	0.040
To be well-capitalized under regulatory provisions, amount	$ 752.0
To be well-capitalized under regulatory provisions, ratio	0.050
Tier 1 capital
Actual, amount	$ 1,093.0
Actual, ratio	0.141
Requirement for capital adequacy purposes, amount	$ 463.0
Requirement for capital adequacy purposes, ratio	0.060
To be well-capitalized under regulatory provisions, amount	$ 618.0
To be well-capitalized under regulatory provisions, ratio	0.080
CET1
Actual, amount	$ 1,093.0
Actual, ratio	0.141
Requirement for capital adequacy purposes, amount	$ 348.0
Requirement for capital adequacy purposes, ratio	0.045
To be well-capitalized under regulatory provisions, amount	$ 502.0
To be well-capitalized under regulatory provisions, ratio	0.065
Total capital
Actual, amount	$ 1,122.0
Actual ratio	0.145
Requirement for capital adequacy purposes, amount	$ 618.0
Requirement for capital adequacy purposes, ratio	0.080
To be well-capitalized under regulatory provisions, amount	$ 772.0
To be well-capitalized under regulatory provisions, ratio	0.100