Balance Sheets - Parent Company Only (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Assets [Abstract]
Cash and Due from Banks	$ 4,258		$ 7,134
Interest-bearing Deposits in Banks and Other Financial Institutions	22		22
Cash and Cash Equivalents, at Carrying Value	5,263		8,257		4,509	5,378
Trading assets	5,040		6,227
Available-for-sale Securities	22,542		21,953
Goodwill	6,369		6,369		6,344
Other Assets	5,520		5,157
Assets	175,335		173,442
Liabilities and Shareholders' Equity
Long-term Debt	10,700	[1]	9,357	[1]
Other Liabilities	3,534		4,114
Liabilities	153,913		152,457
Preferred Stock, Value, Outstanding	725		725
Common Stock, Value, Outstanding	550		550
Retained Earnings (Accumulated Deficit)	11,936		10,817
Treasury Stock, Value	615	[2]	590	[2]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(289)		309		1,749	1,616
Liabilities and Equity	175,335		173,442
Parent Company [Member]
Assets [Abstract]
Cash and Due from Banks	238		137
Cash and Cash Equivalents, at Carrying Value	3,014		761		1,641	2,877
Trading assets	92		103
Available-for-sale Securities	316		279
Due from Affiliates	1,311		2,733
Goodwill	99		99
Other Assets	534		561
Assets	28,603		28,425
Liabilities and Shareholders' Equity
Long-term Debt	4,111		3,249
Other Liabilities	819		1,108
Liabilities	7,300		7,554
Preferred Stock, Value, Outstanding	725		725
Common Stock, Value, Outstanding	550		550
Additional Paid in Capital, Common Stock	9,115		9,174
Retained Earnings (Accumulated Deficit)	11,936		10,817
Treasury Stock, Value	734	[3]	704	[3]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(289)		309
Stockholders' Equity Attributable to Parent	21,303		20,871
Liabilities and Equity	28,603		28,425
Parent Company [Member] | Unaffiliated Entity - Other banking institutions [Member]
Assets [Abstract]
Interest-bearing Deposits in Banks and Other Financial Institutions	20		20
Parent Company [Member] | non-affiliated entity [Member]
Liabilities and Shareholders' Equity
Short-term Debt	1,554		1,512
Long-term Debt	4,111		3,249
Parent Company [Member] | Bank Subsidiaries [Member]
Assets [Abstract]
Interest-bearing Deposits in Banks and Other Financial Institutions	2,756		604
Investments in and Advances to Affiliates, Amount of Equity	21,772		22,521
Parent Company [Member] | Nonbank Subsidiaries [Member]
Assets [Abstract]
Investments in and Advances to Affiliates, Amount of Equity	1,465		1,368
Parent Company [Member] | Subsidiaries [Member]
Liabilities and Shareholders' Equity
Short-term Debt	656		1,525
Long-term Debt	$ 160		$ 160

[1] 3 Includes debt of consolidated VIEs of $597 million and $666 million at December 31, 2013 and 2012, respectively, of which $256 and $286 are carried at fair value at December 31, 2013 and 2012, respectively.

[2] 4 Includes noncontrolling interest of $119 million and $114 million at December 31, 2013 and 2012, respectively.

[3] At December 31, 2013, includes ($684) million for treasury stock and ($50) million for compensation element of restricted stock. At December 31, 2012, includes ($656) million for treasury stock and ($48) million for compensation element of restricted stock.