XML 202 R136.htm IDEA: XBRL DOCUMENT
v3.20.2

Commitments (Narrative) (Details) $ in Billions | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($)
Standby letters of credit |
Loss Contingencies [Line Items] |
Internal credit ratings (as a percentage of portfolio) - Pass | 98.00%
Standby letters of credit - Assets securing certain specifically identified standby letters of credit | $ 1.0
Standby letters of credit and participations in standby letters of credit - Liability carrying amount | $ 0.2
Less than 1 year |
Loss Contingencies [Line Items] |
Standby letters of credit, term | 1 year
Maximum |
Loss Contingencies [Line Items] |
Standby letters of credit, term | 6 years

X
- Definition Amount of any assets held either as collateral or by third parties that, upon the occurrence of any triggering event or condition under the guarantee, the guarantor can obtain and liquidate to recover all or a portion of the amounts paid under the guarantee. + References No definition available. + Details
Name: | pnc_AssetsSecuringCertainSpecificallyIdentifiedStandbyLettersOfCredit
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Standby Letter of Credit, Term + References No definition available. + Details
Name: | pnc_StandbyLetterofCreditTerm
Namespace Prefix: | pnc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of standby letters of credit (including risk participations in standby letters of credit and bankers' acceptances issued by other financial institutions) with an internal credit rating of pass, indicating the expected risk of loss is currently low. + References No definition available. + Details
Name: | pnc_StandbyLettersOfCreditPass
Namespace Prefix: | pnc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248 + Details
Name: | us-gaap_GuaranteeObligationsCurrentCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_FinancialStandbyLetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |