Loan Sale and Servicing Activities and Variable Interest Entities (Non-Consolidated VIEs) (Details) (Variable Interest Entity, Not Primary Beneficiary [Member], USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
Aggregate Assets	$ 118,646		$ 126,232
Aggregate Liabilities	116,593		124,386
PNC Risk of Loss	4,618		5,054
Carrying Value of Assets	4,615		5,050
Carrying Value of Liabilities	350		305
Collateralized Debt Obligations [Member]
Aggregate Assets	13		18
Aggregate Liabilities	0		0
PNC Risk of Loss	1		1
Carrying Value of Assets	1	[1]	1	[1]
Carrying Value of Liabilities	0		0
Tax Credit Investments [Member]
Aggregate Assets	4,409	[2]	4,086	[2]
Aggregate Liabilities	2,369	[2]	2,258	[2]
PNC Risk of Loss	850	[2]	782	[2]
Carrying Value of Assets	850	[1],[2]	782	[1],[2]
Carrying Value of Liabilities	347	[2],[3]	301	[2],[3]
Commercial Mortgage-Backed Securitizations [Member]
Aggregate Assets	79,871	[4]	79,142	[4]
Aggregate Liabilities	79,871	[4]	79,142	[4]
PNC Risk of Loss	2,209	[4]	2,068	[4]
Carrying Value of Assets	2,209	[4],[5]	2,068	[4],[5]
Carrying Value of Liabilities	0	[4]	0	[4]
Residential Mortgage-Backed Securitizations [Member]
Aggregate Assets	34,353	[4]	42,986	[4]
Aggregate Liabilities	34,353	[4]	42,986	[4]
PNC Risk of Loss	1,558	[4]	2,203	[4]
Carrying Value of Assets	1,555	[4],[5]	2,199	[4],[5]
Carrying Value of Liabilities	$ 3	[3],[4]	$ 4	[3],[4]

[1] Included in Equity investments on our Consolidated Balance Sheet.

[2] Amounts primarily represent LIHTC investments. Aggregate assets and aggregate liabilities represent estimated balances due to limited availability of financial information associated with certain acquired partnerships.

[3] Included in Other liabilities on our Consolidated Balance Sheet.

[4] Amounts reflect involvement with securitization SPEs where PNC transferred to and/or services loans for a SPE and we hold securities issued by that SPE. Asset amounts equal outstanding liability amounts of the SPEs due to limited availability of SPE financial information. We also invest in other mortgage and asset-backed securities issued by third-party VIEs with which we have no continuing involvement. Further information on these securities is included in Note 7 Investment Securities and values disclosed represent our maximum exposure to loss for those securities’ holdings.

[5] Included in Trading securities, Investment securities, Other intangible assets, and Other assets on our Consolidated Balance Sheet.