Acquisition and Divestiture Activity (Narrative) (Details) (USD $)	Oct. 31, 2012 Smartstreet [Member]	Mar. 02, 2012 RBC Bank Usa Acquisition [Member]	Mar. 02, 2012 RBC Bank Usa Acquisition [Member] Loans Receivable [Member]	Mar. 02, 2012 RBC Bank Usa Acquisition [Member] Deposits [Member]	Mar. 02, 2012 RBC Bank Usa Acquisition [Member] Other Intangible Assets [Member]
Business Acquisition [Line Items]
Total Shares Acquired In Acquisition		100.00%
Business Acquisition Cost Of Acquired Entity Purchase Price		$ 3,600,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		2,600,000,000	14,500,000,000	(18,100,000,000)	200,000,000
Business Acquisition Purchase Price Allocation Goodwill Amount		1,000,000,000
Disposal Group Including Discontinued Operation Assets	1,000,000,000
Disposal Group Including Discontinued Operation Goodwill	46,000,000
Disposal Group Including Discontinued Operation Intangible Assets Net	$ 13,000,000