Aquisition and Divestiture Activity (Details) (USD $)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Pretax gain from sale of PNC Global Investment Servicing, Inc. (GIS), net of transaction costs		$ 639,000,000
Net cash received from acquisition and divestiture activity	(261,000,000)	(2,479,000,000)
BankAtlantic Branch Acquisition [Member]
Business Acquisition Purchase Price Allocation Assets Acquired	325,000,000
Total Number Branches Acquired	19
Business Acquisition Purchase Price Allocation Goodwill Amount	41,000,000
Net cash received from acquisition and divestiture activity	257,000,000
Business Acquisition Deposits Assumed	324,000,000
RBC Bank USA Pending Acquisition [Member]
Business Acquisition Cost Of Acquired Entity Equity Interests Issued And Issuable	1,000,000,000
Maximum Percentage Total Shares Issued Acquisition	4.90%
Business Acquisition Purchase Price Allocation Assets Acquired	25,000,000,000
Business Acquisition Cost Of Acquired Entity Purchase Price	3,450,000,000
RBC Bank USA Pending Acquisition [Member] | South East North America [Member]
Total Number Branches Acquired	424
Flagstar Branch Pending Acquisition [Member]
Number Branches Purchased	21
Number Branches Leased	6
Business Acquisition Purchase Price Allocation Property	42,000,000
Business Acquisition Deposits Assumed	240,000,000
Flagstar Branch Pending Acquisition [Member] | Atlanta Georgia [Member]
Total Number Branches Acquired	27
PNC Global Investment Servicing [Member]
Proceeds from sale of discontinued operations	2,300,000,000
Pretax gain from sale of PNC Global Investment Servicing, Inc. (GIS), net of transaction costs	$ 639,000,000