Purchased Loans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended				9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Mar. 02, 2012 RBC Bank Usa Acquisition [Member]	Sep. 30, 2012 Purchased Impaired Loans [Member]	Dec. 31, 2011 Purchased Impaired Loans [Member]	Mar. 02, 2012 Purchased Impaired Loans [Member] RBC Bank Usa Acquisition [Member]		Sep. 30, 2012 Impaired Loans With Associated Allowance [Member]	Sep. 30, 2012 Impaired Loans Without Associated Allowance [Member]	Mar. 02, 2012 Purchased Non Impaired Loan [Member] RBC Bank Usa Acquisition [Member]
Financing Receivable, Impaired [Line Items]
Provision for credit losses (benefit)	$ 228	$ 261	$ 669	$ 962			$ 131
Charge-offs recorded on impaired loans			1,410	1,782			61
Specific allowance for loan and lease losses associated with purchased impaired loans							1,100	998
Purchased impaired loans	7,749	6,927	7,749	6,927	6,667
Outstanding Balance						16,700			3,011	[1]			13,663	[1],[2]
Fair Value of Loans Acquired									$ 1,998	[1],[2]	$ 7,100	$ 600	$ 12,512	[1],[2]

[1] The table above has been updated to reflect certain immaterial adjustments and reclassifications between commercial and commercial real estate.

[2] The table above has been updated to reflect certain immaterial adjustments.