XML 156 R63.htm IDEA: XBRL DOCUMENT
v3.20.4

Investment Securities (Gross Unrealized Loss and Fair Value of Securities Available for Sale Without an Allowance for Credit Losses) (Details) $ in Millions | Dec. 31, 2020 USD ($)
--- | ---
Debt Securities, Available-for-sale [Line Items] |
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss | $ (42)
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months - fair value | 5,185
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss | (27)
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer - fair value | 1,724
Debt securities, available-for-sale, unrealized loss position, accumulated loss | (69)
Debt securities, available-for-sale, unrealized loss position | 6,909
U.S. Treasury and government agencies |
Debt Securities, Available-for-sale [Line Items] |
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss | (13)
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months - fair value | 603
Debt securities, available-for-sale, unrealized loss position, accumulated loss | (13)
Debt securities, available-for-sale, unrealized loss position | 603
Residential mortgage-backed Securities | Mortgage-backed Securities Agency |
Debt Securities, Available-for-sale [Line Items] |
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss | (8)
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months - fair value | 3,152
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss | (2)
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer - fair value | 82
Debt securities, available-for-sale, unrealized loss position, accumulated loss | (10)
Debt securities, available-for-sale, unrealized loss position | 3,234
Residential mortgage-backed Securities | Mortgage-backed Securities Non-agency |
Debt Securities, Available-for-sale [Line Items] |
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss | (7)
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months - fair value | 119
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss | (7)
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer - fair value | 73
Debt securities, available-for-sale, unrealized loss position, accumulated loss | (14)
Debt securities, available-for-sale, unrealized loss position | 192
Commercial Mortgage Backed Securities | Mortgage-backed Securities Agency |
Debt Securities, Available-for-sale [Line Items] |
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss | (2)
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer - fair value | 149
Debt securities, available-for-sale, unrealized loss position, accumulated loss | (2)
Debt securities, available-for-sale, unrealized loss position | 149
Commercial Mortgage Backed Securities | Mortgage-backed Securities Non-agency |
Debt Securities, Available-for-sale [Line Items] |
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss | (13)
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months - fair value | 972
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss | (7)
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer - fair value | 714
Debt securities, available-for-sale, unrealized loss position, accumulated loss | (20)
Debt securities, available-for-sale, unrealized loss position | 1,686
Asset-backed |
Debt Securities, Available-for-sale [Line Items] |
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss | (1)
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months - fair value | 339
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss | (9)
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer - fair value | 706
Debt securities, available-for-sale, unrealized loss position, accumulated loss | (10)
Debt securities, available-for-sale, unrealized loss position | $ 1,045

X
- Definition Debt Securities With No Allowance For Credit Loss, Available-For-Sale, Unrealized Loss Position + References No definition available. + Details
Name: | pnc_DebtSecuritiesWithNoAllowanceForCreditLossAvailableforSaleUnrealizedLossPosition
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Securities With No Allowance For Credit Loss, Available-for-Sale, Unrealized Loss Position, Accumulated Loss + References No definition available. + Details
Name: | pnc_DebtSecuritiesWithNoAllowanceForCreditLossAvailableforSaleUnrealizedLossPositionAccumulatedLoss
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Securities With No Allowance For Credit Loss, Available-for-sale, Continuous Unrealized Loss Position, 12 Months Or Longer + References No definition available. + Details
Name: | pnc_DebtSecuritiesWithNoAllowanceForCreditLossAvailableforsaleContinuousUnrealizedLossPosition12MonthsOrLonger
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Securities With No Allowance For Credit Loss, Available-for-sale, Continuous Unrealized Loss Position, 12 Months Or Longer, Accumulated Loss + References No definition available. + Details
Name: | pnc_DebtSecuritiesWithNoAllowanceForCreditLossAvailableforsaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Securities With No Allowance For Credit Loss, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months + References No definition available. + Details
Name: | pnc_DebtSecuritiesWithNoAllowanceForCreditLossAvailableforsaleContinuousUnrealizedLossPositionLessthan12Months
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Securities With No Allowance For Credit Loss, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss + References No definition available. + Details
Name: | pnc_DebtSecuritiesWithNoAllowanceForCreditLossAvailableforsaleContinuousUnrealizedLossPositionLessthan12MonthsAccumulatedLoss
Namespace Prefix: | pnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | pnc_ScheduleOfAvailableForSaleSecuritiesAndHeldToMaturitySecuritiesOfDebtAndEquitySecuritiesAxis=us-gaap_USTreasuryAndGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnc_ScheduleOfAvailableForSaleSecuritiesAndHeldToMaturitySecuritiesOfDebtAndEquitySecuritiesAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnc_AgencyandNonAgencyFinancialSecuritiesAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnc_AgencyandNonAgencyFinancialSecuritiesAxis=us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnc_ScheduleOfAvailableForSaleSecuritiesAndHeldToMaturitySecuritiesOfDebtAndEquitySecuritiesAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnc_ScheduleOfAvailableForSaleSecuritiesAndHeldToMaturitySecuritiesOfDebtAndEquitySecuritiesAxis=us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |