XML 72 R58.htm IDEA: XBRL DOCUMENT
v3.21.2

Fair Value Measurements (Schedule Of Assets And Liabilities At Fair Value Measured On A Recurring Basis And Non-Recurring Basis) (Details) - USD ($) | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | $ 29,290,000,000 |  | $ 27,154,000,000 |
Loans held for sale |  | 991,000,000 |  | 1,446,000,000 |
Residential mortgage servicing rights |  | 392,000,000 |  | 296,000,000 |
Derivative Assets | [1] | 704,000,000 |  | 921,000,000 |
Derivative Liabilities | [1] | 52,000,000 |  | 53,000,000 |
Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 29,290,000,000 |  | 27,154,000,000 |
Loans held for sale |  | 991,000,000 |  | 1,446,000,000 |
Marketable Equity Securities |  | 447,000,000 |  | 388,000,000 |
Residential mortgage servicing rights |  | 392,000,000 |  | 296,000,000 |
Derivative Assets |  | 2,061,000,000 |  | 3,349,000,000 |
Other Assets, Fair Value Disclosure |  | 0 |  | 74,000,000 |
Derivative Liabilities |  | 1,254,000,000 |  | 1,598,000,000 |
Nonrecurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Loans held for sale | [2],[3] | 128,000,000 |  | 4,000,000 |
Security Owned Not Readily Marketable, Fair Value | [2] | 6,000,000 | [3] | 12,000,000 |
Foreclosed property and other real estate | [2] | 12,000,000 | [3] | 5,000,000 |
Level 1 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 737,000,000 |  | 183,000,000 |
Loans held for sale |  | 0 |  | 0 |
Derivative Assets |  | 1,000,000 |  | 2,000,000 |
Other Assets, Fair Value Disclosure |  |  |  | 0 |
Derivative Liabilities |  | 1,000,000 |  | 2,000,000 |
Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 737,000,000 |  | 183,000,000 |
Loans held for sale |  | 0 |  | 0 |
Marketable Equity Securities |  | 447,000,000 |  | 388,000,000 |
Residential mortgage servicing rights |  | 0 |  | 0 |
Derivative Assets |  | 1,000,000 |  | 2,000,000 |
Other Assets, Fair Value Disclosure |  | 0 |  | 0 |
Derivative Liabilities |  | 1,000,000 |  | 2,000,000 |
Level 1 [Member] | Nonrecurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Loans held for sale | [2],[3] | 0 |  | 0 |
Security Owned Not Readily Marketable, Fair Value | [2] | 0 |  | 0 |
Foreclosed property and other real estate | [2] | 0 |  | 0 |
Level 2 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 28,548,000,000 |  | 26,966,000,000 |
Loans held for sale |  | 1,066,000,000 |  | 1,901,000,000 |
Derivative Assets |  | 2,034,000,000 |  | 3,303,000,000 |
Other Assets, Fair Value Disclosure |  |  |  | 74,000,000 |
Derivative Liabilities |  | 1,249,000,000 |  | 1,590,000,000 |
Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 28,548,000,000 |  | 26,966,000,000 |
Loans held for sale |  | 991,000,000 |  | 1,446,000,000 |
Marketable Equity Securities |  | 0 |  | 0 |
Residential mortgage servicing rights |  | 0 |  | 0 |
Derivative Assets |  | 2,034,000,000 |  | 3,303,000,000 |
Other Assets, Fair Value Disclosure |  | 0 |  |  |
Derivative Liabilities |  | 1,249,000,000 |  | 1,590,000,000 |
Level 2 [Member] | Nonrecurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Loans held for sale | [2],[3] | 0 |  | 0 |
Security Owned Not Readily Marketable, Fair Value | [2] | 0 | [3] | 0 |
Foreclosed property and other real estate | [2] | 0 | [3] | 0 |
Level 3 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 5,000,000 |  | 5,000,000 |
Loans held for sale |  | 128,000,000 |  | 4,000,000 |
Derivative Assets |  | 26,000,000 |  | 44,000,000 |
Other Assets, Fair Value Disclosure |  |  |  | 0 |
Derivative Liabilities |  | 4,000,000 |  | 6,000,000 |
Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale | [4] | 5,000,000 |  | 5,000,000 |
Loans held for sale |  | 0 |  | 0 | [4]
Marketable Equity Securities |  | 0 |  | 0 |
Residential mortgage servicing rights |  | 392,000,000 |  | 296,000,000 |
Derivative Assets | [4] | 26,000,000 |  | 44,000,000 |
Other Assets, Fair Value Disclosure |  | 0 |  | 0 |
Derivative Liabilities | [4] | 4,000,000 |  | 6,000,000 |
Level 3 [Member] | Nonrecurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Loans held for sale | [2],[3],[4] | 128,000,000 |  | 4,000,000 |
Security Owned Not Readily Marketable, Fair Value | [2],[4] | 6,000,000 | [3] | 12,000,000 |
Foreclosed property and other real estate | [2],[4] | 12,000,000 | [3] | 5,000,000 |
Interest Rate Swaps [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 1,631,000,000 |  | 2,750,000,000 |
Derivative Liabilities |  | 1,067,000,000 |  | 1,464,000,000 |
Interest Rate Swaps [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 0 |  | 0 |
Derivative Liabilities |  | 0 |  | 0 |
Interest Rate Swaps [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets | [5] | 1,631,000,000 |  | 2,750,000,000 |
Derivative Liabilities | [5] | 1,067,000,000 |  | 1,464,000,000 |
Interest Rate Swaps [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 0 |  | 0 |
Derivative Liabilities |  | 0 |  | 0 |
Interest Rate Options [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 260,000,000 |  | 520,000,000 |
Derivative Liabilities |  | 23,000,000 |  | 28,000,000 |
Interest Rate Options [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 0 |  | 0 |
Derivative Liabilities |  | 0 |  | 0 |
Interest Rate Options [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 234,000,000 |  | 477,000,000 |
Derivative Liabilities |  | 23,000,000 |  | 28,000,000 |
Interest Rate Options [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets | [4] | 26,000,000 |  | 43,000,000 |
Derivative Liabilities |  | 0 |  | 0 |
Interest Rate Futures And Forward Commitments [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 13,000,000 |  | 11,000,000 |
Derivative Liabilities |  | 4,000,000 |  | 26,000,000 |
Interest Rate Futures And Forward Commitments [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 0 |  | 0 |
Derivative Liabilities |  | 0 |  | 0 |
Interest Rate Futures And Forward Commitments [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 13,000,000 |  | 11,000,000 |
Derivative Liabilities |  | 4,000,000 |  | 26,000,000 |
Interest Rate Futures And Forward Commitments [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 0 |  | 0 | [4]
Derivative Liabilities |  | 0 |  | 0 |
Other Contract [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 157,000,000 |  | 68,000,000 |
Derivative Liabilities |  | 160,000,000 |  | 80,000,000 |
Other Contract [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 1,000,000 |  | 2,000,000 |
Derivative Liabilities |  | 1,000,000 |  | 2,000,000 |
Other Contract [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets |  | 156,000,000 |  | 65,000,000 |
Derivative Liabilities |  | 155,000,000 |  | 72,000,000 |
Other Contract [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Assets | [4] | 0 |  | 1,000,000 |
Derivative Liabilities | [4] | 4,000,000 |  | 6,000,000 |
US Treasury Securities [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 737,000,000 |  | 183,000,000 |
US Treasury Securities [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 737,000,000 |  | 183,000,000 |
US Treasury Securities [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 737,000,000 |  | 183,000,000 |
US Treasury Securities [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
US Treasury Securities [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Federal Agency Securities [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 99,000,000 |  | 105,000,000 |
Federal Agency Securities [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Federal Agency Securities [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 99,000,000 |  | 105,000,000 |
Federal Agency Securities [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Residential Agency [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 19,860,000,000 |  | 19,076,000,000 |
Residential Agency [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 19,860,000,000 |  | 19,076,000,000 |
Residential Agency [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Residential Agency [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 19,860,000,000 |  | 19,076,000,000 |
Residential Agency [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Residential Non-Agency [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 1,000,000 |  | 1,000,000 |
Residential Non-Agency [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 1,000,000 |  | 1,000,000 |
Residential Non-Agency [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Residential Non-Agency [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Residential Non-Agency [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale | [4] | 1,000,000 |  | 1,000,000 |
Commercial Agency [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 6,464,000,000 |  | 5,999,000,000 |
Commercial Agency [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 6,464,000,000 |  | 5,999,000,000 |
Commercial Agency [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Commercial Agency [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 6,464,000,000 |  | 5,999,000,000 |
Commercial Agency [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Commercial Non-Agency [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 553,000,000 |  | 586,000,000 |
Commercial Non-Agency [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 553,000,000 |  | 586,000,000 |
Commercial Non-Agency [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Commercial Non-Agency [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 553,000,000 |  | 586,000,000 |
Commercial Non-Agency [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Corporate and other debt securities [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 1,576,000,000 |  | 1,204,000,000 |
Corporate and other debt securities [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 1,576,000,000 |  | 1,204,000,000 |
Corporate and other debt securities [Member] | Level 1 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 0 |  | 0 |
Corporate and other debt securities [Member] | Level 2 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale |  | 1,572,000,000 |  | 1,200,000,000 |
Corporate and other debt securities [Member] | Level 3 [Member] | Recurring Fair Value Measurements [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Debt securities available for sale | [4] | $ 4,000,000 |  | $ 4,000,000 |
[1] | The gain amounts, which are not collateralized with cash or other assets or reserved for, represent the net credit risk on all trading and other derivative positions. As of June 30, 2021 and December 31, 2020, financial instruments posted of $24 million, for both periods, were not offset in the consolidated balance sheets.
[2] | From time to time, certain assets may be recorded at fair value on a non-recurring basis, and the related fair value adjustments disclosed are typically a result of the application of lower of cost or fair value accounting or a write-down occurring during the periods indicated.
[3] | Loans held for sale measured at fair value on a non-recurring
[4] | All following disclosures related to Level 3 recurring and non-recurring assets do not include those deemed to be immaterial.
[5] | As permitted under U.S. GAAP, variation margin collateral payments made or received for derivatives that are centrally cleared are legally characterized as settled. As such, these derivative assets and derivative liabilities and the related variation margin collateral are presented on a net basis on the balance sheet. (3)From time to time, certain assets may be recorded at fair value on a non-recurring basis, and the related fair value adjustments disclosed are typically a result of the application of lower of cost or fair value accounting or a write-down occurring during the periods indicated. (4)Loans held for sale measured at fair value on a non-recurring basis as of June 30, 2021 includes a single IRE loan of $97 million that was reclassified into loans held for sale during the second quarter of 2021 and sold subsequent to June 30, 2021.

X
- Definition Fair value, foreclosed property and other real estate and equipment nonrecurring basis. + References No definition available. + Details
Name: | rf_FairValueForeclosedPropertyAndOtherRealEstateAndEquipmentNonrecurringBasis
Namespace Prefix: | rf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121553693&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
Name: | us-gaap_DerivativeAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 + Details
Name: | us-gaap_DerivativeLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
Name: | us-gaap_EquitySecuritiesFvNi
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 No definition available. + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables. + References No definition available. + Details
Name: | us-gaap_LoansHeldForSaleFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of other assets. + References No definition available. + Details
Name: | us-gaap_OtherAssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of the not readily marketable security or category which has been determined by management based upon fair value methods, including pricing of similar securities and valuation techniques and is included in the schedule of financial condition or the balance sheet. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 820 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35710923&loc=d3e45360-110995 + Details
Name: | us-gaap_SecurityOwnedNotReadilyMarketableFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
Name: | us-gaap_ServicingAssetAtFairValueAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
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_FinancialInstrumentAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=rf_FederalAgencySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=rf_ResidentialAgencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=rf_ResidentialNonAgencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=rf_CommercialAgencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=rf_CommercialNonAgencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=rf_CorporateandotherdebtsecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |