Statements of Income/(Loss) - Parent Company Only (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Trading Gain (Loss)	$ 182		$ 211		$ 248
Interest Expense, Long-term Debt	210		299		449
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	1,634		2,757		739
Income Tax Expense (Benefit)	(273)		(773)		(79)
Net Income (Loss) Attributable to Parent	1,344		1,958		647
Dividends, Preferred Stock, Cash	(37)	[1]	(12)		(7)
United States Treasury Preferred Dividends	0		0		(66)
Accelerated Accretion On US Treasury Preferred Stock	0		0		74
Undistributed Earnings Allocated to Participating Securities	(10)		(15)		(5)
Net Income (Loss) Available to Common Stockholders, Basic	1,297		1,931		495
Parent Company [Member]
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries	1,200	[2]	27	[2]	29	[2]
Interest and Fee Income, Other Loans	10		36		11
Trading Gain (Loss)	16		18		53
Other Income	7		23		132
Revenues	1,233		104		225
Interest Expense, Short-term Borrowings	12		13		9
Interest Expense, Long-term Debt	96		177		226
Labor and Related Expense	24	[3]	111	[3]	(7)	[3]
Fees and Commision Expenses	3		3		11
Other Expenses	(113)	[4]	43		133
Operating Expenses	22		347		372
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	1,211		(243)		(147)
Income Tax Expense (Benefit)	8		91		49
Income (Loss) Before Equity in Undistributed Earnings of Subsidiaries	1,219		(152)		(98)
Equity in Undistributed Earnings of Subsidiaries	125		2,110		745
Net Income (Loss) Attributable to Parent	1,344		1,958		647
Dividends, Preferred Stock, Cash	(37)		(12)		(7)
United States Treasury Preferred Dividends	0		0		(66)
Accelerated Accretion On US Treasury Preferred Stock	0		0		74
Undistributed Earnings Allocated to Participating Securities	(10)		(15)		(5)
Net Income (Loss) Available to Common Stockholders, Basic	$ 1,297		$ 1,931		$ 495

[1] Dividends were $4,056 per share for Perpetual Preferred Stock Series A and B and $5,793 per share for Perpetual Preferred Stock Series E for the year ended December 31, 2013.

[2] 1 Substantially all dividend income received from subsidiaries.

[3] 2 Includes incentive compensation allocations between the Parent Company and subsidiaries.

[4] 3 Includes the transfer to STM of certain mortgage legal-related expenses recorded at the Parent Company in prior years.