BANK LOANS, NET, Past Due, Nonaccrual, and Modified Loans and Collateral Dependent Loans (Details) - USD ($) $ in Millions	Dec. 31, 2023	Sep. 30, 2023
Financing Receivable, Past Due [Line Items]
Performing nonaccrual loans	$ 87	$ 96
SBL
Financing Receivable, Past Due [Line Items]
Total loans held for investment	14,647	14,606
C&I loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	10,503	10,406
Loans modified		21
CRE loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	7,331	7,221
Loans modified		3
REIT loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	1,697	1,668
Residential mortgage loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	8,861	8,662
Residential mortgage - first mortgage loans
Financing Receivable, Past Due [Line Items]
Loans modified		10
Tax-exempt loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	1,411	1,541
Loans held for investment
Financing Receivable, Past Due [Line Items]
Total loans held for investment	44,450	44,104
Nonaccrual with allowance	145	104
Nonaccrual with no allowance	19	24
Loans held for investment \| SBL
Financing Receivable, Past Due [Line Items]
Total loans held for investment	14,647	14,606
Nonaccrual with allowance	0	0
Nonaccrual with no allowance	0	0
Loans held for investment \| C&I loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	10,503	10,406
Nonaccrual with allowance	64	69
Nonaccrual with no allowance	0	2
Loans held for investment \| CRE loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	7,331	7,221
Nonaccrual with allowance	81	35
Nonaccrual with no allowance	12	13
Loans held for investment \| REIT loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	1,697	1,668
Nonaccrual with allowance	0	0
Nonaccrual with no allowance	0	0
Loans held for investment \| Residential mortgage loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	8,861	8,662
Nonaccrual with allowance	0	0
Nonaccrual with no allowance	7	9
Loans held for investment \| Tax-exempt loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	1,411	1,541
Nonaccrual with allowance	0	0
Nonaccrual with no allowance	0	0
Loans held for investment \| Total past due and accruing
Financing Receivable, Past Due [Line Items]
Total loans held for investment	15	11
Loans held for investment \| Total past due and accruing \| SBL
Financing Receivable, Past Due [Line Items]
Total loans held for investment	7	9
Loans held for investment \| Total past due and accruing \| C&I loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	3	0
Loans held for investment \| Total past due and accruing \| CRE loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| Total past due and accruing \| REIT loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| Total past due and accruing \| Residential mortgage loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	5	2
Loans held for investment \| Total past due and accruing \| Tax-exempt loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| 30-89 days and accruing
Financing Receivable, Past Due [Line Items]
Total loans held for investment	15	11
Loans held for investment \| 30-89 days and accruing \| SBL
Financing Receivable, Past Due [Line Items]
Total loans held for investment	7	9
Loans held for investment \| 30-89 days and accruing \| C&I loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	3	0
Loans held for investment \| 30-89 days and accruing \| CRE loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| 30-89 days and accruing \| REIT loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| 30-89 days and accruing \| Residential mortgage loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	5	2
Loans held for investment \| 30-89 days and accruing \| Tax-exempt loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| 90 days or more and accruing
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| 90 days or more and accruing \| SBL
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| 90 days or more and accruing \| C&I loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| 90 days or more and accruing \| CRE loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| 90 days or more and accruing \| REIT loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| 90 days or more and accruing \| Residential mortgage loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| 90 days or more and accruing \| Tax-exempt loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	0	0
Loans held for investment \| Current and accruing
Financing Receivable, Past Due [Line Items]
Total loans held for investment	44,271	43,965
Loans held for investment \| Current and accruing \| SBL
Financing Receivable, Past Due [Line Items]
Total loans held for investment	14,640	14,597
Loans held for investment \| Current and accruing \| C&I loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	10,436	10,335
Loans held for investment \| Current and accruing \| CRE loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	7,238	7,173
Loans held for investment \| Current and accruing \| REIT loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	1,697	1,668
Loans held for investment \| Current and accruing \| Residential mortgage loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	8,849	8,651
Loans held for investment \| Current and accruing \| Tax-exempt loans
Financing Receivable, Past Due [Line Items]
Total loans held for investment	$ 1,411	$ 1,541

Financing Receivable, Performing, Non Accrual Loans

No definition available.

Name:	rjf_FinancingReceivablePerformingNonAccrualLoans
Namespace Prefix:	rjf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Accumulated amortized cost of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 310
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481746/310-40-50-4

+ Details

Name:	us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

+ Details

Name:	us-gaap_FinancingReceivableNonaccrualNoAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (3)
-Publisher SEC

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (2)
-Publisher SEC

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-7

+ Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 80
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-80

+ Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=rjf_SecuritiesBasedLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=rjf_REITLoansPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=rjf_ResidentialMortgageFirstMortgagePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=rjf_TaxExemptLoanPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rjf_LoansHeldForInvestmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=rjf_FinancingReceivables30to89DaysPastDueandStillAccruingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=rjf_FinancingReceivablesNinetyOrMoreDaysPastDueAndStillAccruingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: