XML 70 R59.htm IDEA: XBRL DOCUMENT
v3.24.3

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 | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | $ 62 | $ (7) | $ 103 | $ 5
Capital markets income [Member] | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 34 | 36 | 91 | 47
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 | 3 | 16 | 18 | (8)
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 | 15 | 14 | 38 | 35
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 | 4 | 2 | 18 | 10
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 | 12 | 4 | 17 | 10
Mortgage Income [Member] | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 28 | (43) | 12 | (42)
Mortgage Income [Member] | Interest rate swaps | Not Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 26 | (38) | 3 | (38)
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) | (2) | 0
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 | $ 3 | $ (4) | $ 11 | $ (4)

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: |