BANK LOANS, NET, Allowance for Loan Losses (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025	Sep. 30, 2025	Dec. 31, 2025
SBL
Net (charge-offs)/recoveries:
Charge-offs			$ 0		$ 0
C&I loans
Net (charge-offs)/recoveries:
Charge-offs			(1)		(33)
CRE loans
Net (charge-offs)/recoveries:
Charge-offs			(14)		(12)
REIT loans
Net (charge-offs)/recoveries:
Charge-offs			0		0
Residential mortgage loans
Net (charge-offs)/recoveries:
Charge-offs			0		(1)
Tax-exempt loans
Net (charge-offs)/recoveries:
Charge-offs			0		0
Total loans held for investment
Changes in the allowance for loan losses [Roll Forward]
Balance at beginning of period	$ 440	$ 452	452	$ 457	457
Provision/(benefit) for credit losses	5	16	2	16
Net (charge-offs)/recoveries:
Charge-offs	(6)	(17)	(15)	(21)
Recoveries	1	2	1	2
Net (charge-offs)/recoveries	(5)	(15)	(14)	(19)
Foreign exchange translation adjustment	0	(1)	0	(2)
Balance at end of period	$ 440	$ 452	$ 440	$ 452	452
ACL by loan portfolio segment as a % of total ACL	100.00%	100.00%	100.00%	100.00%
Decrease in allowance for credit losses	$ 12
Total loans held for investment \| SBL
Changes in the allowance for loan losses [Roll Forward]
Balance at beginning of period	7	$ 5	$ 8	$ 6	6
Provision/(benefit) for credit losses	(1)	2	(2)	1
Net (charge-offs)/recoveries:
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net (charge-offs)/recoveries	0	0	0	0
Foreign exchange translation adjustment	0		0	0
Balance at end of period	$ 6	$ 7	$ 6	$ 7	8
ACL by loan portfolio segment as a % of total ACL	1.40%	1.50%	1.40%	1.50%
Total loans held for investment \| C&I loans
Changes in the allowance for loan losses [Roll Forward]
Balance at beginning of period	$ 146	$ 176	$ 148	$ 173	173
Provision/(benefit) for credit losses	(2)	4	(3)	11
Net (charge-offs)/recoveries:
Charge-offs	0	(9)	(1)	(13)
Recoveries	0	1	0	1
Net (charge-offs)/recoveries	0	(8)	(1)	(12)
Foreign exchange translation adjustment	0	(1)	0	(1)
Balance at end of period	$ 144	$ 171	$ 144	$ 171	148
ACL by loan portfolio segment as a % of total ACL	32.80%	37.90%	32.80%	37.90%
Total loans held for investment \| CRE loans
Changes in the allowance for loan losses [Roll Forward]
Balance at beginning of period	$ 176	$ 177	$ 182	$ 188	188
Provision/(benefit) for credit losses	36	11	38	1
Net (charge-offs)/recoveries:
Charge-offs	(6)	(8)	(14)	(8)
Recoveries	0	1	0	1
Net (charge-offs)/recoveries	(6)	(7)	(14)	(7)
Foreign exchange translation adjustment	0	0	0	(1)
Balance at end of period	$ 206	$ 181	$ 206	$ 181	182
ACL by loan portfolio segment as a % of total ACL	46.80%	40.00%	46.80%	40.00%
Total loans held for investment \| REIT loans
Changes in the allowance for loan losses [Roll Forward]
Balance at beginning of period	$ 48	$ 27	$ 52	$ 23	23
Provision/(benefit) for credit losses	(29)	5	(33)	9
Net (charge-offs)/recoveries:
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net (charge-offs)/recoveries	0	0	0	0
Foreign exchange translation adjustment	0	0	0	0
Balance at end of period	$ 19	$ 32	$ 19	$ 32	52
ACL by loan portfolio segment as a % of total ACL	4.30%	7.10%	4.30%	7.10%
Total loans held for investment \| Residential mortgage loans
Changes in the allowance for loan losses [Roll Forward]
Balance at beginning of period	$ 62	$ 65	$ 61	$ 65	65
Provision/(benefit) for credit losses	1	(5)	2	(5)
Net (charge-offs)/recoveries:
Charge-offs	0	0	0	0
Recoveries	1	0	1	0
Net (charge-offs)/recoveries	1	0	1	0
Foreign exchange translation adjustment	0	0	0	0
Balance at end of period	$ 64	$ 60	$ 64	$ 60	61
ACL by loan portfolio segment as a % of total ACL	14.50%	13.30%	14.50%	13.30%
Total loans held for investment \| Tax-exempt loans
Changes in the allowance for loan losses [Roll Forward]
Balance at beginning of period	$ 1	$ 2	$ 1	$ 2	2
Provision/(benefit) for credit losses	0	(1)	0	(1)
Net (charge-offs)/recoveries:
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs)/recoveries	0	0	0	0
Foreign exchange translation adjustment	0	0	0
Balance at end of period	$ 1	$ 1	$ 1	$ 1	1
ACL by loan portfolio segment as a % of total ACL	0.20%	0.20%	0.20%	0.20%
Unfunded lending commitments
Net (charge-offs)/recoveries:
Allowance, unfunded lending commitment	$ 23		$ 23		$ 24	$ 24

Financing Receivable, Allowance For Credit Loss, Percentage

No definition available.

Name:	rjf_FinancingReceivableAllowanceForCreditLossPercentage
Namespace Prefix:	rjf_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the foreign currency translation adjustment for the difference between translation at period end rate versus translation at average rate.

+ References

No definition available.

+ Details

Name:	rjf_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossForeignExchangeTranslationAdjustment
Namespace Prefix:	rjf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

Amount excluding accrued interest, of allowance for credit loss on 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

+ Details

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

- Definition

Amount of increase (decrease) in allowance for credit loss on financing receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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

- Definition

Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. 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 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. 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 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, excluding accrued interest, of decrease (increase) in allowance for credit loss on financing receivable from writeoff (recovery). Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffAfterRecovery
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. 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 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-22

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482454/460-10-45-1

+ Details

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

- 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_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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnfundedLoanCommitmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: