Commitments and Guarantees (Analysis of Indemnification and Repurchase Liability for Asserted and Unasserted Claims) (Details) (USD $)	9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010
Residential Mortgage [Member]
Repurchase obligations - sold loan portfolios	$ 126,700,000,000		$ 145,700,000,000
Residential Mortgage [Member] | Total Repurchase and Indemnification Obligations [Member]
Recourse/Repurchase obligations, beginning balance	144,000,000	[1]	229,000,000	[1]
Reserve adjustments, net	66,000,000	[1]	96,000,000	[1]
Losses - loan repurchases and settlements	(125,000,000)	[1]	(170,000,000)	[1]
Recourse/Repurchase obligations, ending balance	85,000,000	[1]	155,000,000	[1]
Home Equity Loans Lines [Member]
Repurchase obligations - sold loan portfolios	4,600,000,000		7,000,000,000
Home Equity Loans Lines [Member] | Total Repurchase and Indemnification Obligations [Member]
Recourse/Repurchase obligations, beginning balance	150,000,000	[2]	41,000,000	[2]
Reserve adjustments, net	3,000,000	[2]	73,000,000	[2]
Losses - loan repurchases and settlements	(102,000,000)	[2]	(14,000,000)	[2]
Recourse/Repurchase obligations, ending balance	51,000,000	[2]	100,000,000	[2]
Total Repurchase and Indemnification Obligations [Member]
Recourse/Repurchase obligations, beginning balance	294,000,000		270,000,000
Reserve adjustments, net	69,000,000		169,000,000
Losses - loan repurchases and settlements	(227,000,000)		(184,000,000)
Recourse/Repurchase obligations, ending balance	$ 136,000,000		$ 255,000,000

[1] Repurchase obligation associated with sold loan portfolios of $126.7 billion and $145.7 billion at September 30, 2011 and September 30, 2010, respectively.

[2] Repurchase obligation associated with sold loan portfolios of $4.6 billion and $7.0 billion at September 30, 2011 and September 30, 2010, respectively. PNC is nolonger engaged in the brokered home equity business, which was acquired with National City.