XML 82 R67.htm IDEA: XBRL DOCUMENT
v3.10.0.1

ALLOWANCE FOR CREDIT LOSSES, NONPERFORMING ASSETS, AND CONCENTRATIONS OF CREDIT RISK - Troubled Debt Restructuring (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) contract | Sep. 30, 2017 USD ($) contract | Sep. 30, 2018 USD ($) contract | Sep. 30, 2017 USD ($) contract
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | $ 1 | $ 0 | $ 3 | $ 3
Charge-offs Resulting from Modification |  | $ 2 | $ 2 | $ 3 | $ 4
Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 718 | 744 | 2,032 | 2,133
Pre-Modification Outstanding Recorded Investment | [1] | $ 9 | $ 9 | $ 24 | $ 27
Post-Modification Outstanding Recorded Investment | [1] | $ 9 | $ 9 | $ 25 | $ 28
Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 97 | 127 | 262 | 316
Pre-Modification Outstanding Recorded Investment | [2] | $ 13 | $ 20 | $ 30 | $ 57
Post-Modification Outstanding Recorded Investment | [2] | $ 13 | $ 20 | $ 30 | $ 57
Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 549 | 685 | 1,801 | 1,941
Pre-Modification Outstanding Recorded Investment | [3] | $ 20 | $ 51 | $ 248 | $ 134
Post-Modification Outstanding Recorded Investment | [3] | 18 | 51 | 246 | 131
Commercial |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 0 | 0 | 0 | 1
Charge-offs Resulting from Modification |  | $ 0 | $ 0 | $ 0 | $ 0
Commercial | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 1 | 3 | 6 | 7
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 1 | $ 1 | $ 2
Post-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 1 | $ 1 | $ 2
Commercial | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 13 | 18 | 24 | 36
Pre-Modification Outstanding Recorded Investment | [2] | $ 1 | $ 8 | $ 2 | $ 22
Post-Modification Outstanding Recorded Investment | [2] | $ 1 | $ 7 | $ 2 | $ 21
Commercial | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 1 | 8 | 42 | 13
Pre-Modification Outstanding Recorded Investment | [3] | $ 0 | $ 28 | $ 186 | $ 64
Post-Modification Outstanding Recorded Investment | [3] | 0 | 30 | 187 | 65
Commercial | Commercial |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 0 | 0 | 0 | 1
Charge-offs Resulting from Modification |  | $ 0 | $ 0 | $ 0 | $ 0
Commercial | Commercial | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 1 | 3 | 6 | 7
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 1 | $ 1 | $ 2
Post-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 1 | $ 1 | $ 2
Commercial | Commercial | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 13 | 17 | 23 | 35
Pre-Modification Outstanding Recorded Investment | [2] | $ 1 | $ 8 | $ 2 | $ 22
Post-Modification Outstanding Recorded Investment | [2] | $ 1 | $ 7 | $ 2 | $ 21
Commercial | Commercial | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 1 | 7 | 40 | 12
Pre-Modification Outstanding Recorded Investment | [3] | $ 0 | $ 28 | $ 155 | $ 64
Post-Modification Outstanding Recorded Investment | [3] | 0 | 30 | 156 | 65
Commercial | Commercial real estate |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 0 | 0 | 0 | 0
Charge-offs Resulting from Modification |  | $ 0 | $ 0 | $ 0 | $ 0
Commercial | Commercial real estate | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 0 | 0 | 0 | 0
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 0
Commercial | Commercial real estate | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 0 | 1 | 1 | 1
Pre-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Commercial | Commercial real estate | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 0 | 1 | 2 | 1
Pre-Modification Outstanding Recorded Investment | [3] | $ 0 | $ 0 | $ 31 | $ 0
Post-Modification Outstanding Recorded Investment | [3] | 0 | 0 | 31 | 0
Retail |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 1 | 0 | 3 | 2
Charge-offs Resulting from Modification |  | $ 2 | $ 2 | $ 3 | $ 4
Retail | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 717 | 741 | 2,026 | 2,126
Pre-Modification Outstanding Recorded Investment | [1] | $ 9 | $ 8 | $ 23 | $ 25
Post-Modification Outstanding Recorded Investment | [1] | $ 9 | $ 8 | $ 24 | $ 26
Retail | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 84 | 109 | 238 | 280
Pre-Modification Outstanding Recorded Investment | [2] | $ 12 | $ 12 | $ 28 | $ 35
Post-Modification Outstanding Recorded Investment | [2] | $ 12 | $ 13 | $ 28 | $ 36
Retail | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 548 | 677 | 1,759 | 1,928
Pre-Modification Outstanding Recorded Investment | [3] | $ 20 | $ 23 | $ 62 | $ 70
Post-Modification Outstanding Recorded Investment | [3] | 18 | 21 | 59 | 66
Retail | Residential mortgages |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | (1) | (1) | (1) | (1)
Charge-offs Resulting from Modification |  | $ 0 | $ 0 | $ 0 | $ 0
Retail | Residential mortgages | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 9 | 13 | 32 | 56
Pre-Modification Outstanding Recorded Investment | [1] | $ 1 | $ 1 | $ 3 | $ 6
Post-Modification Outstanding Recorded Investment | [1] | $ 1 | $ 2 | $ 4 | $ 7
Retail | Residential mortgages | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 17 | 15 | 47 | 50
Pre-Modification Outstanding Recorded Investment | [2] | $ 2 | $ 1 | $ 6 | $ 9
Post-Modification Outstanding Recorded Investment | [2] | $ 2 | $ 2 | $ 6 | $ 10
Retail | Residential mortgages | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 31 | 38 | 117 | 122
Pre-Modification Outstanding Recorded Investment | [3] | $ 4 | $ 3 | $ 14 | $ 13
Post-Modification Outstanding Recorded Investment | [3] | 3 | 3 | 14 | 13
Retail | Home equity loans |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 0 | 0 | 0 | 0
Charge-offs Resulting from Modification |  | $ 0 | $ 0 | $ 0 | $ 0
Retail | Home equity loans | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 10 | 25 | 32 | 68
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 2 | $ 2 | $ 4
Post-Modification Outstanding Recorded Investment | [1] | $ 1 | $ 1 | $ 3 | $ 4
Retail | Home equity loans | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 0 | 0 | 1 | 1
Pre-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Retail | Home equity loans | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 40 | 49 | 106 | 192
Pre-Modification Outstanding Recorded Investment | [3] | $ 2 | $ 3 | $ 5 | $ 11
Post-Modification Outstanding Recorded Investment | [3] | 2 | 3 | 5 | 11
Retail | Home equity lines of credit |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 0 | 0 | 0 | 0
Charge-offs Resulting from Modification |  | $ 0 | $ 1 | $ 0 | $ 1
Retail | Home equity lines of credit | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 27 | 11 | 55 | 41
Pre-Modification Outstanding Recorded Investment | [1] | $ 3 | $ 1 | $ 5 | $ 2
Post-Modification Outstanding Recorded Investment | [1] | $ 3 | $ 1 | $ 5 | $ 2
Retail | Home equity lines of credit | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 58 | 86 | 147 | 204
Pre-Modification Outstanding Recorded Investment | [2] | $ 10 | $ 11 | $ 21 | $ 26
Post-Modification Outstanding Recorded Investment | [2] | $ 10 | $ 11 | $ 21 | $ 26
Retail | Home equity lines of credit | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 104 | 110 | 310 | 295
Pre-Modification Outstanding Recorded Investment | [3] | $ 7 | $ 6 | $ 22 | $ 20
Post-Modification Outstanding Recorded Investment | [3] | 7 | 7 | 21 | 20
Retail | Home equity loans serviced by others |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 0 | 0 | 0 | 0
Charge-offs Resulting from Modification |  | $ 0 | $ 0 | $ 0 | $ 0
Retail | Home equity loans serviced by others | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 2 | 3 | 3 | 14
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 1
Post-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 1
Retail | Home equity loans serviced by others | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 0 | 0 | 0 | 0
Pre-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Retail | Home equity loans serviced by others | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 5 | 11 | 20 | 41
Pre-Modification Outstanding Recorded Investment | [3] | $ 1 | $ 1 | $ 1 | $ 2
Post-Modification Outstanding Recorded Investment | [3] | 1 | 0 | 1 | 1
Retail | Home equity lines of credit serviced by others |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 0 | 0 | 0 | 0
Charge-offs Resulting from Modification |  | $ 0 | $ 0 | $ 0 | $ 0
Retail | Home equity lines of credit serviced by others | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 1 | 0 | 5 | 3
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 0
Retail | Home equity lines of credit serviced by others | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 0 | 0 | 1 | 2
Pre-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Retail | Home equity lines of credit serviced by others | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 8 | 8 | 13 | 21
Pre-Modification Outstanding Recorded Investment | [3] | $ 0 | $ 1 | $ 0 | $ 2
Post-Modification Outstanding Recorded Investment | [3] | 0 | 0 | 0 | 1
Retail | Automobile |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 0 | 0 | 0 | 0
Charge-offs Resulting from Modification |  | $ 2 | $ 1 | $ 3 | $ 3
Retail | Automobile | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 45 | 28 | 122 | 93
Pre-Modification Outstanding Recorded Investment | [1] | $ 1 | $ 1 | $ 3 | $ 2
Post-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 1 | $ 2 | $ 2
Retail | Automobile | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 9 | 8 | 42 | 23
Pre-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 1 | $ 0
Post-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 1 | $ 0
Retail | Automobile | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 315 | 392 | 893 | 1,017
Pre-Modification Outstanding Recorded Investment | [3] | $ 5 | $ 7 | $ 15 | $ 18
Post-Modification Outstanding Recorded Investment | [3] | 4 | 6 | 13 | 16
Retail | Education |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 1 | 0 | 1 | 1
Charge-offs Resulting from Modification |  | $ 0 | $ 0 | $ 0 | $ 0
Retail | Education | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 0 | 0 | 0 | 0
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 0
Retail | Education | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 0 | 0 | 0 | 0
Pre-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Retail | Education | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 45 | 67 | 296 | 235
Pre-Modification Outstanding Recorded Investment | [3] | $ 1 | $ 2 | $ 5 | $ 4
Post-Modification Outstanding Recorded Investment | [3] | 1 | 2 | 5 | 4
Retail | Credit cards |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 1 | 1 | 3 | 3
Charge-offs Resulting from Modification |  | $ 0 | $ 0 | $ 0 | $ 0
Retail | Credit cards | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 623 | 661 | 1,776 | 1,850
Pre-Modification Outstanding Recorded Investment | [1] | $ 4 | $ 3 | $ 10 | $ 10
Post-Modification Outstanding Recorded Investment | [1] | $ 4 | $ 3 | $ 10 | $ 10
Retail | Credit cards | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 0 | 0 | 0 | 0
Pre-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Retail | Credit cards | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 0 | 0 | 0 | 0
Pre-Modification Outstanding Recorded Investment | [3] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [3] | 0 | 0 | 0 | 0
Retail | Other retail |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Net Change to ALLL Resulting from Modification |  | 0 | 0 | 0 | (1)
Charge-offs Resulting from Modification |  | $ 0 | $ 0 | $ 0 | $ 0
Retail | Other retail | Interest Rate Reduction |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [1] | 0 | 0 | 1 | 1
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 0
Retail | Other retail | Maturity Extension |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [2] | 0 | 0 | 0 | 0
Pre-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [2] | $ 0 | $ 0 | $ 0 | $ 0
Retail | Other retail | Other |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |
Number of Contracts | contract | [3] | 0 | 2 | 4 | 5
Pre-Modification Outstanding Recorded Investment | [3] | $ 0 | $ 0 | $ 0 | $ 0
Post-Modification Outstanding Recorded Investment | [3] | $ 0 | $ 0 | $ 0 | $ 0
[1] | Includes modifications that consist of multiple concessions, one of which is an interest rate reduction.
[2] | Includes modifications that consist of multiple concessions, one of which is a maturity extension (unless one of the other concessions was an interest rate reduction).
[3] | Includes modifications other than interest rate reductions or maturity extensions, such as lowering scheduled payments for a specified period of time, principal forgiveness, and capitalizing arrearages. Also included are the following: deferrals, trial modifications, certain bankruptcies, loans in forbearance and prepayment plans. Modifications can include the deferral of accrued interest resulting in post modification balances being higher than pre-modification.

X
- Definition The effect of a change in method or methods for calculating the allowance for credit losses on the current period provision. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesEffectOfChangeInMethod
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 No definition available. + Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Pre-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ContractualInterestRateReductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=cfg_DebtModificationOtherMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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