No definition available.

Name:	rjf_FinancingReceivableRecordedInvestmentAbstract
Namespace Prefix:	rjf_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of reserve for unfunded lending commitments.

+ References

No definition available.

+ Details

Name:	rjf_ReserveForUnfundedLendingCommitments
Namespace Prefix:	rjf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	rjf_ReserveForUnfundedLendingCommitmentsAbstract
Namespace Prefix:	rjf_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118955202&loc=SL82895884-210446

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7)(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

+ Details

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

- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

+ Details

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

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

+ Details

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

- Details

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

- Details

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

- Details

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

BANK LOANS, NET, Allowance for Loan Losses, Loans Individually and Collectively Evaluated for Impairment (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018
Recorded investment
Total loans held for investment	$ 22,002		$ 20,979
Reserve for unfunded lending commitments [Abstract]
Reserve for unfunded lending commitments	9		9
C&I loans
Recorded investment
Total loans held for investment	8,316		8,098
CRE construction loans
Recorded investment
Total loans held for investment	180		185
CRE loans
Recorded investment
Total loans held for investment	3,830		3,652
Tax-exempt loans
Recorded investment
Total loans held for investment	1,266		1,241
SBL and other
Recorded investment
Total loans held for investment	3,546		3,349
Loans held for investment
Allowance for loan losses
Individually evaluated for impairment	2		7
Collectively evaluated for impairment	322		211
Total allowance for loan losses	324	$ 216	218	$ 218	$ 219	$ 203
Recorded investment
Individually evaluated for impairment	35		55
Collectively evaluated for impairment	21,967		20,924
Total loans held for investment	22,002		20,979
Loans held for investment \| C&I loans
Allowance for loan losses
Individually evaluated for impairment	1		6
Collectively evaluated for impairment	196		133
Total allowance for loan losses	197	139	139	140	137	123
Recorded investment
Individually evaluated for impairment	4		19
Collectively evaluated for impairment	8,312		8,079
Total loans held for investment	8,316		8,098
Loans held for investment \| CRE construction loans
Allowance for loan losses
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	3		3
Total allowance for loan losses	3	2	3	3	3	3
Recorded investment
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	180		185
Total loans held for investment	180		185
Loans held for investment \| CRE loans
Allowance for loan losses
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	88		46
Total allowance for loan losses	88	46	46	45	46	47
Recorded investment
Individually evaluated for impairment	6		8
Collectively evaluated for impairment	3,824		3,644
Total loans held for investment	3,830		3,652
Loans held for investment \| Tax-exempt loans
Allowance for loan losses
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	11		9
Total allowance for loan losses	11	8	9	8	9	9
Recorded investment
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	1,266		1,241
Total loans held for investment	1,266		1,241
Loans held for investment \| Residential mortgage loans
Allowance for loan losses
Individually evaluated for impairment	1		1
Collectively evaluated for impairment	17		15
Total allowance for loan losses	18	17	16	17	19	17
Recorded investment
Individually evaluated for impairment	25		28
Collectively evaluated for impairment	4,839		4,426
Total loans held for investment	4,864		4,454
Loans held for investment \| SBL and other
Allowance for loan losses
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	7		5
Total allowance for loan losses	7	$ 4	5	$ 5	$ 5	$ 4
Recorded investment
Individually evaluated for impairment	0		0
Collectively evaluated for impairment	3,546		3,349
Total loans held for investment	$ 3,546		$ 3,349