XML 54 R44.htm IDEA: XBRL DOCUMENT
v3.25.3

Loans And The Allowance For Credit Losses (Past Due Financing Receivables) (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | $ 202 | $ 221
Total 30 plus DPD, Accrual Loans | 627 | 650
Total Accrual | 95,367 | 95,799
Nonaccrual | 758 | 928
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 96,125 | 96,727
Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 6 | 8
Total 30 plus DPD, Accrual Loans | 79 | 82
Total Accrual | 53,788 | 54,395
Nonaccrual | 566 | 450
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 54,354 | 54,845
Investor Real Estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 0 | 0
Total 30 plus DPD, Accrual Loans | 28 | 0
Total Accrual | 8,933 | 8,287
Nonaccrual | 137 | 423
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 9,070 | 8,710
Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 196 | 213
Total 30 plus DPD, Accrual Loans | 520 | 568
Total Accrual | 32,646 | 33,117
Nonaccrual | 55 | 55
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 32,701 | 33,172
Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 4 | 7
Total 30 plus DPD, Accrual Loans | 67 | 76
Total Accrual | 48,710 | 49,263
Nonaccrual | 524 | 408
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 49,234 | 49,671
Commercial Real Estate Mortgage - Owner-Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 2 | 1
Total 30 plus DPD, Accrual Loans | 12 | 6
Total Accrual | 4,794 | 4,804
Nonaccrual | 41 | 37
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 4,835 | 4,841
Commercial Real Estate Construction - Owner-Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 0 | 0
Total 30 plus DPD, Accrual Loans | 0 | 0
Total Accrual | 284 | 328
Nonaccrual | 1 | 5
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 285 | 333
Commercial Investor Real Estate Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 0 | 0
Total 30 plus DPD, Accrual Loans | 28 | 0
Total Accrual | 6,985 | 6,144
Nonaccrual | 137 | 423
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 7,122 | 6,567
Commercial Investor Real Estate Construction [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 0 | 0
Total 30 plus DPD, Accrual Loans | 0 | 0
Total Accrual | 1,948 | 2,143
Nonaccrual | 0 | 0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 1,948 | 2,143
Residential First Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 132 | 143
Total 30 plus DPD, Accrual Loans | 326 | 360
Total Accrual | 19,857 | 20,071
Nonaccrual | 24 | 23
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 19,881 | 20,094
Home Equity Lines of Credit[Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 14 | 16
Total 30 plus DPD, Accrual Loans | 42 | 40
Total Accrual | 3,185 | 3,124
Nonaccrual | 24 | 26
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 3,209 | 3,150
Home Equity Loan [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 7 | 7
Total 30 plus DPD, Accrual Loans | 21 | 24
Total Accrual | 2,333 | 2,384
Nonaccrual | 7 | 6
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 2,340 | 2,390
Consumer Credit Card Financing Receivable [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 20 | 20
Total 30 plus DPD, Accrual Loans | 40 | 40
Total Accrual | 1,437 | 1,445
Nonaccrual | 0 | 0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 1,437 | 1,445
Other Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
90 plus DPD, Accrual Loans | 23 | 27
Total 30 plus DPD, Accrual Loans | 91 | 104
Total Accrual | 5,834 | 6,093
Nonaccrual | 0 | 0
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Total | 5,834 | 6,093
Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 282 | 282
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 50 | 55
Financing Receivables, 30 to 59 Days Past Due [Member] | Investor Real Estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 28 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 204 | 227
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 43 | 51
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 7 | 4
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate Construction - Owner-Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 0 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Investor Real Estate Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 28 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Investor Real Estate Construction [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 0 | 0
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential First Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 119 | 139
Financing Receivables, 30 to 59 Days Past Due [Member] | Home Equity Lines of Credit[Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 20 | 15
Financing Receivables, 30 to 59 Days Past Due [Member] | Home Equity Loan [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 9 | 11
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Credit Card Financing Receivable [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 12 | 11
Financing Receivables, 30 to 59 Days Past Due [Member] | Other Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 44 | 51
Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 143 | 147
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 23 | 19
Financing Receivables, 60 to 89 Days Past Due [Member] | Investor Real Estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 120 | 128
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 20 | 18
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 3 | 1
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate Construction - Owner-Occupied [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Investor Real Estate Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Investor Real Estate Construction [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 0 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential First Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 75 | 78
Financing Receivables, 60 to 89 Days Past Due [Member] | Home Equity Lines of Credit[Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 8 | 9
Financing Receivables, 60 to 89 Days Past Due [Member] | Home Equity Loan [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 5 | 6
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Credit Card Financing Receivable [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | 8 | 9
Financing Receivables, 60 to 89 Days Past Due [Member] | Other Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Past Due less than 90 days | $ 24 | $ 26

X
- Definition Financing Receivable, Past Due between 30 and 89 days + References No definition available. + Details
Name: | rf_FinancingReceivablePastDueBetween30And89Days
Namespace Prefix: | rf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded investment in financing receivables that are on accrual status as of the balance sheet date. + References No definition available. + Details
Name: | rf_FinancingReceivableRecordedInvestmentTotalLoansAccrual
Namespace Prefix: | rf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing Receivable, Total 30 Days or more past due + References No definition available. + Details
Name: | rf_FinancingReceivableTotal30DaysOrMorePastDue
Namespace Prefix: | rf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of 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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-7 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (3) -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (2) -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-14 Reference 12: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 13: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 14: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 15: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 16: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 17: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=rf_TotalInvestorRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rf_CommercialAndIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rf_CommercialRealEstateMortgageOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rf_CommercialRealEstateConstructionOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rf_TotalCommercialInvestorRealEstateMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rf_TotalCommercialInvestorRealEstateConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rf_ResidentialFirstMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CreditCardReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rf_OtherConsumerFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |