Business Segments - IFRS to US GAAP Adjustments from previous table (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Net Interest Income	$ (76)	$ (123)	$ (41)
Other Revenues	23	43	(20)
Provision for Credit Losses	0	73	(3)
Operating Expenses	286	48	125
(Loss) Income before Income Tax Expense	(339)	(201)	(183)
Total Assets	(49,879)	(67,543)	(81,772)
Unquoted Equity Securities [Member]
Segment Reporting Information [Line Items]
Net Interest Income	0	0	0
Other Revenues	0	0	0
Provision for Credit Losses	0	0	0
Operating Expenses	0	0	0
(Loss) Income before Income Tax Expense	0	0	0
Total Assets	(163)	(108)	(71)
Reclassification of Financial Assets [Member]
Segment Reporting Information [Line Items]
Net Interest Income	(14)	(64)	(37)
Other Revenues	40	181	37
Provision for Credit Losses	0	0	0
Operating Expenses	0	0	0
(Loss) Income before Income Tax Expense	26	117	0
Total Assets	11	(4)	187
Securities (Assets) [Member]
Segment Reporting Information [Line Items]
Net Interest Income	0	0	0
Other Revenues	(1)	0	(18)
Provision for Credit Losses	0	0	0
Operating Expenses	(2)	(13)	(7)
(Loss) Income before Income Tax Expense	1	13	(11)
Total Assets	(24)	(27)	(9)
Derivatives [Member]
Segment Reporting Information [Line Items]
Net Interest Income	0	(4)	(4)
Other Revenues	(3)	(5)	(7)
Provision for Credit Losses	0	0	0
Operating Expenses	0	0	0
(Loss) Income before Income Tax Expense	(3)	(9)	(11)
Total Assets	(49,876)	(67,762)	(81,262)
Loan Impairment [Member]
Segment Reporting Information [Line Items]
Net Interest Income	(57)	(34)	(8)
Other Revenues	1	3	0
Provision for Credit Losses	(11)	73	(4)
Operating Expenses	1	0	0
(Loss) Income before Income Tax Expense	(46)	(104)	(4)
Total Assets	(94)	(66)	(28)
Property [Member]
Segment Reporting Information [Line Items]
Net Interest Income	0	(9)	(5)
Other Revenues	0	16	0
Provision for Credit Losses	0	0	0
Operating Expenses	(17)	(21)	(27)
(Loss) Income before Income Tax Expense	17	28	22
Total Assets	37	42	164
Pension Costs [Member]
Segment Reporting Information [Line Items]
Net Interest Income	0	0	0
Other Revenues	0	0	0
Provision for Credit Losses	0	0	0
Operating Expenses	24	11	48
(Loss) Income before Income Tax Expense	(24)	(11)	(48)
Total Assets	(154)	(137)	(134)
Purchased Loan Portfolios [Member]
Segment Reporting Information [Line Items]
Net Interest Income			0
Other Revenues			0
Provision for Credit Losses			0
Operating Expenses			0
(Loss) Income before Income Tax Expense			0
Total Assets			3
Servicing Assets [Member]
Segment Reporting Information [Line Items]
Net Interest Income	0	0	0
Other Revenues	6	(1)	0
Provision for Credit Losses	0	0	0
Operating Expenses	0	0	0
(Loss) Income before Income Tax Expense	6	(1)	0
Total Assets	8	4	4
Interest Recognition [Member]
Segment Reporting Information [Line Items]
Net Interest Income	2	(2)	2
Other Revenues	0	0	0
Provision for Credit Losses	0	0	0
Operating Expenses	0	0	0
(Loss) Income before Income Tax Expense	2	(2)	2
Total Assets	(3)	(4)	(3)
Sale of Cards and Retail Services Business [Member]
Segment Reporting Information [Line Items]
Net Interest Income	0	0
Other Revenues	0	(92)
Provision for Credit Losses	0	0
Operating Expenses	135	0
(Loss) Income before Income Tax Expense	(135)	(92)
Total Assets	348	0
Low Income Housing Tax Credit [Member]
Segment Reporting Information [Line Items]
Net Interest Income	0	0	0
Other Revenues	(30)	(29)	(26)
Provision for Credit Losses	0	0	0
Operating Expenses	85	84	87
(Loss) Income before Income Tax Expense	(115)	(113)	(113)
Total Assets	0	0	0
Other [Member]
Segment Reporting Information [Line Items]
Net Interest Income	(7)	(10)	11
Other Revenues	10	(30)	(6)
Provision for Credit Losses	11	0	1
Operating Expenses	60	(13)	24
(Loss) Income before Income Tax Expense	(68)	(27)	(20)
Total Assets	$ 31	$ 519	$ (623)