Legal Proceedings - 10-K (Details)		12 Months Ended						12 Months Ended		12 Months Ended
	Dec. 31, 2014 Legal Reserve [Member] Maximum [Member] USD ($)	Dec. 31, 2014 Interchange Litigation [Member] USD ($)	Dec. 31, 2014 CBNV Mortgage [Member]	Dec. 31, 2012 CBNV Mortgage [Member]	Dec. 31, 2014 Bumpers Et Al V Community Bank of Northern Virginia [Member] USD ($)	Dec. 31, 2014 Fulton Financial Advisors NA V PNC Capital Markets LLC [Member] PNC Capital Markets Llc [Member] USD ($)	Dec. 31, 2014 Fulton Financial Advisors NA V PNC Capital Markets LLC [Member] National City Corporation [Member] USD ($)	Dec. 31, 2014 Weavering Macro Fixed Income Fund [Member] EUR (€)	Dec. 31, 2014 White Et Al V The PNC Financial Services Group [Member] USD ($)	Dec. 31, 2013 Consent Orders OCC and Federal Reserve [Member] USD ($)	Dec. 31, 2014 Residential Funding Company LLC V Pnc Bank [Member] USD ($)	Dec. 31, 2014 Jo Ann Howard Pc Et Al V Cassity Et Al [Member] USD ($)
Loss Contingencies [Line Items]
Loss contingency, range of possible loss not accrued	$ 650,000,000
Class Action Lawsuit Members			22,500	50,000
Additional Borrowers Seeking Similar Damages					650
Procured Individual Judgments					11,000
Purchase Of Auction Rate Certificates						123,000,000	175,000,000
Investors Losses								282,000,000
Commissions Interest And Fees Expended								98,000,000
Private Mortgage Insurance Premiums									219,000,000
Paid Claims Supporting Captive Reinsurance Arrangements									12,000,000
Residential Mortgage Foreclosure Compliance Expenses										70,000,000
Additional Loss Mitigation Residential Mortgage Foreclosure Compliance Expenses										111,000,000
Litigation Settlement Amount		6,600,000,000
Residential Mortgage Loans Sold Allegedly Materially Defective											6,500,000,000
Alleged Present And Future Losses												$ 600,000,000