Loans - Consumer, Excluding Credit Card Loans (Details) (USD $) In Millions, unless otherwise specified				12 Months Ended										12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Residential mortgage [Member] 150plus days past [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Days Past Due, 30 or More [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member]	Dec. 31, 2011 Consumer, excluding credit card [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Home equity - senior lien [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Home equity - senior lien [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Home equity - senior lien [Member] 150plus days past [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Home equity - senior lien [Member] 150plus days past [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Home equity - junior lien [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Home equity - junior lien [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Home equity - junior lien [Member] 150plus days past [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Home equity - junior lien [Member] 150plus days past [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Prime, including option ARMS [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Prime, including option ARMS [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Prime, including option ARMS [Member] 150plus days past [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Prime, including option ARMS [Member] 150plus days past [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Subprime mortgage [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Subprime mortgage [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Subprime mortgage [Member] 150plus days past [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Subprime mortgage [Member] 150plus days past [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Auto [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Auto [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Business banking [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Business banking [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Student and other [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Student and other [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Purchased Credit-Impaired, Home Equity [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Purchased Credit-Impaired, Home Equity [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Purchased Credit-Impaired, Prime Mortgage [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Purchased Credit-Impaired, Prime Mortgage [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Purchased Credit-Impaired, Subprime Mortgage [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Purchased Credit-Impaired, Subprime Mortgage [Member]	Dec. 31, 2013 Consumer, excluding credit card [Member] Purchased Credit-Impaired, Option ARMs [Member]	Dec. 31, 2012 Consumer, excluding credit card [Member] Purchased Credit-Impaired, Option ARMs [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total retained loans	$ 724,177	$ 726,835	$ 718,997				$ 288,449	$ 292,620	$ 308,427	$ 17,113	$ 19,385	$ 345	$ 367	$ 40,750	$ 48,000	$ 224	$ 235	$ 87,162	$ 76,256	$ 7,899	$ 11,580	$ 7,104	$ 8,255	$ 502	$ 855	$ 52,757	$ 49,913	$ 18,951	$ 18,883	$ 11,557	$ 12,191	$ 18,927	$ 20,971	$ 12,038	$ 13,674	$ 4,175	$ 4,626	$ 17,915	$ 20,466
Period past due, credit analysis factors, charge off criteria				150 days		30 days								180 days
Low FICO Score					660