XML 73 R61.htm IDEA: XBRL DOCUMENT v3.25.1

Derivative Financial Instruments And Hedging Activities (Schedule Of Gains (Losses) Recognized Related To Derivatives Not Designated As Hedging Instruments) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	$ 31	$ 28
Capital markets income [Member] | Not Designated as Hedging Instrument
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	15	32
Capital markets income [Member] | Interest rate swaps | Not Designated as Hedging Instrument
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	6	9
Capital markets income [Member] | Interest rate options | Not Designated as Hedging Instrument
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	8	9
Capital markets income [Member] | Interest rate futures and forward commitments | Not Designated as Hedging Instrument
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	3	8
Capital markets income [Member] | Other Contracts [Member] | Not Designated as Hedging Instrument
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	(2)	6
Mortgage Income [Member] | Not Designated as Hedging Instrument
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	16	(4)
Mortgage Income [Member] | Interest rate swaps | Not Designated as Hedging Instrument
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	16	(15)
Mortgage Income [Member] | Interest rate options | Not Designated as Hedging Instrument
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	1	1
Mortgage Income [Member] | Interest rate futures and forward commitments | Not Designated as Hedging Instrument
Derivative [Line Items]
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments	$ (1)	$ 10

X

- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4CC
-SubTopic 10
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC

+ Details

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

X

- 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/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

+ Details

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

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=rf_CapitalMarketsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=rf_InterestRateOptionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=rf_InterestRateFuturesAndForwardCommitmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_OtherContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=rf_MortgageIncomeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: