XML 67 R58.htm IDEA: XBRL DOCUMENT
v3.23.3

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, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | $ (7) | $ 50 | $ 5 | $ 42
Mortgage Income [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | (43) | (17) | (42) | (115)
Mortgage Income [Member] | Interest Rate Swaps [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | (38) | (28) | (38) | (112)
Mortgage Income [Member] | Interest Rate Options [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | (1) | (8) | 0 | (17)
Mortgage Income [Member] | Interest Rate Futures And Forward Commitments [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | (4) | 19 | (4) | 14
Capital markets income [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 36 | 67 | 47 | 157
Capital markets income [Member] | Interest Rate Swaps [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 16 | 44 | (8) | 111
Capital markets income [Member] | Interest Rate Options [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 14 | 4 | 35 | 20
Capital markets income [Member] | Interest Rate Futures And Forward Commitments [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | 2 | 8 | 10 | 7
Capital markets income [Member] | Other Contracts [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Gain or (Loss) of Derivatives Not Designated as Hedging Instruments | $ 4 | $ 11 | $ 10 | $ 19

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_MortgageIncomeMember
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_IncomeStatementLocationAxis=rf_CapitalMarketsMember
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: |