Accounting Policies (Details) $ in Millions	Sep. 30, 2015 USD ($)
Charge off threshold - small business commercial loans	$ 1

Charge Off Threshold Commercial Loans Small Business

No definition available.

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