REGULATORY CAPITAL REQUIREMENTS, RJF and RJB (Details) $ in Millions	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
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
CET1
Actual, amount	$ 7,428.0	$ 6,490.0
Actual, ratio	0.250	0.242
Requirement for capital adequacy purposes, amount	$ 1,337.0	$ 1,208.0
Requirement for capital adequacy purposes, ratio	0.045	0.045
To be well-capitalized under regulatory provisions, amount	$ 1,932.0	$ 1,744.0
To be well-capitalized under regulatory provisions, ratio	0.065	0.065
Tier 1 capital
Actual, amount	$ 7,428.0	$ 6,490.0
Actual, ratio	0.250	0.242
Requirement for capital adequacy purposes, amount	$ 1,783.0	$ 1,610.0
Requirement for capital adequacy purposes, ratio	0.060	0.060
To be well-capitalized under regulatory provisions, amount	$ 2,377.0	$ 2,147.0
To be well-capitalized under regulatory provisions, ratio	0.080	0.080
Total capital
Actual, amount	$ 7,780.0	$ 6,804.0
Actual ratio	0.262	0.254
Requirement for capital adequacy purposes, amount	$ 2,377.0	$ 2,147.0
Requirement for capital adequacy purposes, ratio	0.080	0.080
To be well-capitalized under regulatory provisions, amount	$ 2,972.0	$ 2,684.0
To be well-capitalized under regulatory provisions, ratio	0.100	0.100
Tier 1 leverage
Actual, amount	$ 7,428.0	$ 6,490.0
Actual, ratio	0.126	0.142
Requirement for capital adequacy purposes, amount	$ 2,363.0	$ 1,824.0
Requirement for capital adequacy purposes, ratio	0.040	0.040
To be well-capitalized under regulatory provisions, amount	$ 2,954.0	$ 2,280.0
To be well-capitalized under regulatory provisions, ratio	0.050	0.050
Raymond James Bank
CET1
Actual, amount	$ 2,626.0	$ 2,279.0
Actual, ratio	0.134	0.130
Requirement for capital adequacy purposes, amount	$ 883.0	$ 788.0
Requirement for capital adequacy purposes, ratio	0.045	0.045
To be well-capitalized under regulatory provisions, amount	$ 1,275.0	$ 1,138.0
To be well-capitalized under regulatory provisions, ratio	0.065	0.065
Tier 1 capital
Actual, amount	$ 2,626.0	$ 2,279.0
Actual, ratio	0.134	0.130
Requirement for capital adequacy purposes, amount	$ 1,177.0	$ 1,051.0
Requirement for capital adequacy purposes, ratio	0.060	0.060
To be well-capitalized under regulatory provisions, amount	$ 1,569.0	$ 1,401.0
To be well-capitalized under regulatory provisions, ratio	0.080	0.080
Total capital
Actual, amount	$ 2,873.0	$ 2,500.0
Actual ratio	0.146	0.143
Requirement for capital adequacy purposes, amount	$ 1,569.0	$ 1,401.0
Requirement for capital adequacy purposes, ratio	0.080	0.080
To be well-capitalized under regulatory provisions, amount	$ 1,962.0	$ 1,751.0
To be well-capitalized under regulatory provisions, ratio	0.100	0.100
Tier 1 leverage
Actual, amount	$ 2,626.0	$ 2,279.0
Actual, ratio	0.074	0.077
Requirement for capital adequacy purposes, amount	$ 1,411.0	$ 1,183.0
Requirement for capital adequacy purposes, ratio	0.040	0.040
To be well-capitalized under regulatory provisions, amount	$ 1,763.0	$ 1,479.0
To be well-capitalized under regulatory provisions, ratio	0.050	0.050