Parent Company Financial Statements (Parent Company Statement Of Condition) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets:
Interest-bearing deposits with consolidated banking subsidiary	$ 64,257	$ 50,763
Trading account assets	843	637
Investment securities available for sale	99,174	109,682
Other assets	25,990	18,016
Total assets	243,291	222,582
Liabilities:
Long-term debt	9,699	7,429
Total liabilities	222,913	201,713
Total shareholders’ equity	20,378	20,869	19,398	17,787
Total liabilities and shareholders’ equity	243,291	222,582
Parent Company
Assets:
Interest-bearing deposits with consolidated banking subsidiary	4,419	3,799
Trading account assets	216	155
Investment securities available for sale	31	28
Investments in subsidiaries, Consolidated banking subsidiary	19,985	19,805
Investments in subsidiaries, Consolidated non-banking subsidiaries	2,617	2,563
Investments in subsidiaries, Unconsolidated entities	272	458
Notes and other receivables, Consolidated banking subsidiary	1,528	746
Notes and other receivables, Consolidated non-banking subsidiaries and unconsolidated entities	256	258
Other assets	327	294
Total assets	29,651	28,106
Liabilities:
Commercial paper	1,819	2,318
Accrued expenses and other liabilities	447	313
Long-term debt	7,007	4,606
Total liabilities	9,273	7,237
Total shareholders’ equity	20,378	20,869
Total liabilities and shareholders’ equity	$ 29,651	$ 28,106