XML 51 R42.htm IDEA: XBRL DOCUMENT v3.23.3

Allowance For Credit Losses (ModificationsByClassAndSegment) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 380	$ 703
Term Extension, Percentage	0.38%	0.71%
Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 317	$ 495
Term Extension, Percentage	0.32%	0.45%
Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 11	$ 151
Term Extension, Percentage	0.01%	0.15%
Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 4	$ 9
Term Extension, Percentage	0.00%	0.01%
Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 48	$ 48
Term Extension, Percentage	0.05%	0.05%
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 257	$ 462
Term Extension, Percentage	0.45%	0.81%
Commercial Portfolio Segment [Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 200	$ 266
Term Extension, Percentage	0.35%	0.47%
Commercial Portfolio Segment [Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 9	$ 148
Term Extension, Percentage	0.02%	0.26%
Commercial Portfolio Segment [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial Portfolio Segment [Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 48	$ 48
Term Extension, Percentage	0.08%	0.08%
Total Investor Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 91	$ 153
Term Extension, Percentage	1.04%	1.75%
Total Investor Real Estate [Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 91	$ 153
Term Extension, Percentage	1.04%	1.75%
Total Investor Real Estate [Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Total Investor Real Estate [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Total Investor Real Estate [Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 32	$ 88
Term Extension, Percentage	0.10%	0.26%
Consumer Portfolio Segment [Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 26	$ 76
Term Extension, Percentage	0.08%	0.23%
Consumer Portfolio Segment [Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 2	$ 3
Term Extension, Percentage	0.01%	0.01%
Consumer Portfolio Segment [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 4	$ 9
Term Extension, Percentage	0.01%	0.03%
Consumer Portfolio Segment [Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 254	$ 451
Term Extension, Percentage	0.49%	0.87%
Commercial And Industrial [Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 197	$ 255
Term Extension, Percentage	0.38%	0.49%
Commercial And Industrial [Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 9	$ 148
Term Extension, Percentage	0.02%	0.29%
Commercial And Industrial [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial And Industrial [Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 48	$ 48
Term Extension, Percentage	0.09%	0.09%
Commercial Real Estate Mortgage - Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 3	$ 9
Term Extension, Percentage	0.06%	0.18%
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 3	$ 9
Term Extension, Percentage	0.06%	0.18%
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial Real Estate Mortgage - Owner-Occupied [Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial Real Estate Construction - Owner-Occupied [Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount		$ 2
Term Extension, Percentage		0.86%
Commercial Real Estate Construction - Owner-Occupied [Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount		$ 2
Term Extension, Percentage		0.71%
Commercial Real Estate Construction - Owner-Occupied [Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount		$ 0
Term Extension, Percentage		0.00%
Commercial Real Estate Construction - Owner-Occupied [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount		$ 0
Term Extension, Percentage		0.00%
Commercial Real Estate Construction - Owner-Occupied [Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount		$ 0
Term Extension, Percentage		0.00%
Commercial investor real estate mortgage [Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 89	$ 151
Term Extension, Percentage	1.39%	2.35%
Commercial investor real estate mortgage [Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 89	$ 151
Term Extension, Percentage	1.39%	2.35%
Commercial investor real estate mortgage [Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial investor real estate mortgage [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial investor real estate mortgage [Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial Investor Real Estate Construction [Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 2	$ 2
Term Extension, Percentage	0.08%	0.08%
Commercial Investor Real Estate Construction [Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 2	$ 2
Term Extension, Percentage	0.08%	0.08%
Commercial Investor Real Estate Construction [Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial Investor Real Estate Construction [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Commercial Investor Real Estate Construction [Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Residential First Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 28	$ 78
Term Extension, Percentage	0.14%	0.39%
Residential First Mortgage [Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 25	$ 72
Term Extension, Percentage	0.12%	0.36%
Residential First Mortgage [Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 2	$ 3
Term Extension, Percentage	0.01%	0.01%
Residential First Mortgage [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 1	$ 3
Term Extension, Percentage	0.01%	0.02%
Residential First Mortgage [Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Home Equity Lines of Credit[Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 2	$ 3
Term Extension, Percentage	0.05%	0.10%
Home Equity Lines of Credit[Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 1
Term Extension, Percentage	0.00%	0.02%
Home Equity Lines of Credit[Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Home Equity Lines of Credit[Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 2	$ 2
Term Extension, Percentage	0.04%	0.08%
Home Equity Lines of Credit[Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Home Equity Loan [Member]
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 2	$ 7
Term Extension, Percentage	0.09%	0.29%
Home Equity Loan [Member] | Extended Maturity
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 1	$ 3
Term Extension, Percentage	0.04%	0.13%
Home Equity Loan [Member] | Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%
Home Equity Loan [Member] | Extended Maturity and Interest Rate Reduction
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 1	$ 4
Term Extension, Percentage	0.05%	0.15%
Home Equity Loan [Member] | Extended Maturity and Payment Deferral
Financing Receivable, Modifications [Line Items]
Term extension, amount	$ 0	$ 0
Term Extension, Percentage	0.00%	0.00%

X

- Definition

Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

+ Details

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

X

- Definition

Percentage, excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

+ Details

Name:	us-gaap_FinancingReceivableModificationToTotalFinancingReceivablesExcludingAccruedInterestPercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
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 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481933/310-10-55-12A

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-34

+ Details

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

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityAndInterestRateReductionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=rf_ExtendedMaturityAndPaymentDeferralMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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_CommercialinvestorrealestatemortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rf_CommercialInvestorRealEstateConstructionMember
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: