Loan Sale and Servicing Activities and Variable Interest Entities (Certain Financial Information and Cash Flows Associated with Loan Sale and Servicing Activities) (Details) (USD $) In Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010		Dec. 31, 2010
Residential Mortgage [Member]
Servicing portfolio	$ 121,229	[1]			$ 121,229	[1]			$ 125,806	[1]
Carrying value of servicing assets	684	[2]			684	[2]			1,033	[2]
Servicing advances	560				560				533
Servicing deposits	2,310				2,310				2,661
Repurchase and recourse obligations	85	[3]			85	[3]			144	[3]
Carrying value of mortgage-backed securities held	1,542	[4]			1,542	[4]			2,171	[4]
Cash flows from sales of loans	2,652	[5]	2,381	[5]	9,181	[5]	6,607	[5]
Cash flows from repurchases of previously transferred loans	429	[6]	550	[6]	1,238	[6]	1,756	[6]
Cash flows from contractual servicing fees received	92		100		269		316
Cash flows from servicing advances recovered/(funded), net	(35)		(30)		(27)		30
Cash flows on mortgage-backed securities held	90	[4]	143	[4]	348	[4]	433	[4]
Commercial Mortgages [Member]
Servicing portfolio	159,106	[1],[7]			159,106	[1],[7]			162,514	[1],[7]
Carrying value of servicing assets	482	[2],[7]			482	[2],[7]			665	[2],[7]
Servicing advances	474	[7]			474	[7]			415	[7]
Servicing deposits	3,861	[7]			3,861	[7]			3,537	[7]
Repurchase and recourse obligations	49	[3],[7]			49	[3],[7]			54	[3],[7]
Carrying value of mortgage-backed securities held	1,976	[4],[7]			1,976	[4],[7]			1,875	[4],[7]
Cash flows from sales of loans	658	[5],[7]	475	[5],[7]	1,562	[5],[7]	1,453	[5],[7]
Cash flows from contractual servicing fees received	45	[7]	48	[7]	132	[7]	174	[7]
Cash flows from servicing advances recovered/(funded), net	(23)	[7]	1	[7]	(59)	[7]	3	[7]
Cash flows on mortgage-backed securities held	142	[4],[7]	237	[4],[7]	319	[4],[7]	441	[4],[7]
Home Equity Loans Lines [Member]
Servicing portfolio	5,735	[1],[8]			5,735	[1],[8]			6,041	[1],[8]
Carrying value of servicing assets	1	[2],[8]			1	[2],[8]			2	[2],[8]
Servicing advances	8	[8]			8	[8]			21	[8]
Servicing deposits	34	[8]			34	[8]			61	[8]
Repurchase and recourse obligations	51	[3],[8]			51	[3],[8]			150	[3],[8]
Cash flows from repurchases of previously transferred loans	5	[6],[8]	6	[6],[8]	35	[6],[8]	13	[6],[8]
Cash flows from contractual servicing fees received	5	[8]	6	[8]	17	[8]	20	[8]
Cash flows from servicing advances recovered/(funded), net	$ (2)	[8]	$ 4	[8]	$ 13	[8]	$ 13	[8]

[1] For our continuing involvement with residential mortgages and home equity loan/line transfers, amount represents outstanding balance of loans transferred and serviced. For commercial mortgages, amount represents the portion of the overall servicing portfolio in which loans have been transferred by us or third parties to VIEs.

[2] See Note 8 Fair Value and Note 9 Goodwill and Other Intangible Assets for further information.

[3] Represents liability for our loss exposure associated with loan repurchases for breaches of representations and warranties for our Residential Mortgage Banking and Distressed Assets Portfolio segments, and our multifamily commercial mortgage loss share arrangements for our Corporate & Institutional Banking segment. See Note 17 Commitments and Guarantees for further information.

[4] Represents securities held where PNC transferred to and/or services loans for a securitization SPE and we hold securities issued by that SPE.

[5] There were no gains or losses recognized on the transaction date for sales of residential mortgage and certain commercial mortgage loans as these loans are recognized on the balance sheet at fair value. For transfers of commercial mortgage loans not recognized on the balance sheet at fair value, gains/losses recognized on sales of these loans were insignificant for the periods presented.

[6] Includes repurchases of insured loans, government guaranteed loans, and loans repurchased through the exercise of our ROAP option.

[7] Represents financial and cash flow information associated with both commercial mortgage loan transfer and servicing activities.

[8] These activities were part of an acquired brokered home equity business in which PNC is no longer engaged. See Note 17 Commitments and Guarantees for further information.