XML 66 R45.htm IDEA: XBRL DOCUMENT
v3.20.2

Investment Securities (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2020 | Jan. 01, 2020 | Dec. 31, 2019 | Jun. 30, 2019
Schedule of Investments [Line Items] |  |  |  |  |
Investment securities, allowance for credit loss | $ 32 | $ 32 |  |  |
Provision for credit losses on investment securities | 30 | 30 |  |  |
Available for sale debt securities, amortized cost | 93,661 | 93,661 |  | $ 67,790 |
Available-for-sale securities, fair value | 97,052 | 97,052 |  | 69,163 |
Investment securities, net unsettled investment purchases | 347 | 347 |  |  | $ 2,000
Held-to-maturity securities, amortized cost | 1,441 | 1,441 |  | 17,661 |
Held-to-maturity securities, fair value | 1,615 | 1,615 |  | $ 18,044 |
Federal National Mortgage Association Certificates and Obligations (FNMA) [Member] |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Debt securities amortized cost amount of debt securities exceeds 10 percent of shareholders equity | 39,600 | 39,600 |  |  |
Fair value of debt securities of a single issuer that exceeeds 10 percent of shareholders equity | 41,100 | 41,100 |  |  |
Federal Home Loan Mortgage Corporation (FHLMC) Insured Loans [Member] |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Debt securities amortized cost amount of debt securities exceeds 10 percent of shareholders equity | 10,600 | 10,600 |  |  |
Fair value of debt securities of a single issuer that exceeeds 10 percent of shareholders equity | 10,900 | 10,900 |  |  |
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2019-04 |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Available for sale debt securities, amortized cost |  |  | $ 16,200 |  |
Available-for-sale securities, fair value |  |  | 16,500 |  |
Held-to-maturity securities, amortized cost |  |  | (16,200) |  |
Held-to-maturity securities, fair value |  |  | $ (16,500) |  |
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2020-04 |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Available for sale debt securities, amortized cost | 49 | 49 |  |  |
Available-for-sale securities, fair value | 48 | 48 |  |  |
Held-to-maturity securities, amortized cost | (49) | (49) |  |  |
Held-to-maturity securities, fair value | $ (48) | $ (48) |  |  |

X
- Definition Debt Securities, Available-For-Sale And Held-To-Maturity, Allowance for Credit Loss + References No definition available. + Details
Name: | pnc_DebtSecuritiesAvailableForSaleAndHeldToMaturityAllowanceforCreditLoss
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Securities, Available-For-Sale And Held-To-Maturity, Credit Loss Expense (Reversal) + References No definition available. + Details
Name: | pnc_DebtSecuritiesAvailableForSaleAndHeldToMaturityCreditLossExpenseReversal
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | pnc_Debtsecuritiesamortizedcostamountofdebtsecuritiesexceeds10percentofshareholdersequity
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | pnc_Debtsecuritiesfairvalueamountofdebtsecuritiesexceeds10percentofstockholdersequity
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Investment Securities, Unsettled Investment Purchases, Net + References No definition available. + Details
Name: | pnc_InvestmentSecuritiesUnsettledInvestmentPurchasesNet
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost 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 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563 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=118942338&loc=SL82898722-210454 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
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 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 Reference 2: 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=118954083&loc=d3e26610-111562 Reference 3: 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=118939692&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: 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=118954083&loc=d3e26610-111562 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27232-111563 + Details
Name: | us-gaap_HeldToMaturitySecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27232-111563 + Details
Name: | us-gaap_HeldToMaturitySecuritiesFairValue
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_ScheduleOfInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_FederalNationalMortgageAssociationCertificatesAndObligationsFNMAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_FederalHomeLoanMortgageCorporationFhlmcInsuredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnc_CumulativeEffectPeriodOfAdoptionAxis=pnc_CumulativeEffectPeriodOfAdoptionAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=pnc_AccountingStandardsUpdate201904Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=pnc_AccountingStandardsUpdate202004Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |