Loan Sale and Servicing Activities and Variable Interest Entities (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Loan Sale and Servicing Activities and Variable Interest Entities [Abstract]
Balance Of Removal Of Account Provision Asset And Liability	$ 120	$ 136
Liability related to investments in low income housing tax credits	$ 500

Certain loans transferred to the Agencies contain removal of account provisions (ROAPs). Under these ROAPs, we hold an option to repurchase at par individual delinquent loans that meet certain criteria. When we have the unilateral ability to repurchase a delinquent loan, effective control over the loan has been regained and we recognize the loan and a corresponding liability on the balance sheet regardless of our intent to repurchase the loan. Represents both the asset and liability balance of ROAP at period end.

No definition available.

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Namespace Prefix:	pnc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant