Long-Term Debt - Long Term Debt Table (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Unamortized Discount	$ (43)	$ (54)
HSBC acquisition purchase accounting fair value adjustments	24	31
Long-term debt	20,839	28,426
Secured Debt [Member] | 5.00%-5.99% Fixed Rate Senior Debt Due 2013-2017 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	90	189
Other Fixed Rate Senior Debt [Member] | 1.00%-1.99% Other Fixed Rate Senior Debt Due 2013-2014 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	13	16
Other Fixed Rate Senior Debt [Member] | 2.00%-2.99% Other Fixed Rate Senior Debt Due 2013-2015 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	206	347
Other Fixed Rate Senior Debt [Member] | 3.00%-3.99% Other Fixed Rate Senior Debt Due 2014-2016 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	420	422
Other Fixed Rate Senior Debt [Member] | 4.00%-4.99% Other Fixed Rate Senior Debt Due 2013-2018 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	2,444	3,675
Other Fixed Rate Senior Debt [Member] | 5.00%-5.49% Other Fixed Rate Senior Debt Due 2013-2021 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	5,358	6,156
Other Fixed Rate Senior Debt [Member] | 5.50%-5.99% Other Fixed Rate Senior Debt Due 2013-2018 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	2,339	2,638
Other Fixed Rate Senior Debt [Member] | 6.00%-6.49% Other Fixed Rate Senior Debt Due 2013-2017 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	1,714	1,818
Other Fixed Rate Senior Debt [Member] | 6.50%-6.99% due 2013 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	0	2
Debt Instrument, Maturity Year	2013
Other Fixed Rate Senior Debt [Member] | 7.00%-7.49% Other Fixed Rate Senior Debt Due 2023-2032 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	42	42
Other Fixed Rate Senior Debt [Member] | 7.50%-7.99 Other Fixed Rate Senior Debt Due 2012-2032 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	288	284
Variable Interest Rate Debt [Member] | .36%-2.78% Secured Financings Due 2012-2019 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	2,110	2,689
Variable Interest Rate Debt [Member] | Other Variable Interest Rate Senior Debt - .49% to 5.42%; due 2013 to 2016 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	2,595	6,932
Subordinated Debt [Member]
Debt Instrument [Line Items]
Long-term debt, gross	2,208	2,208
Junior subordinated notes issued to capital trusts [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,031	$ 1,031
Stated percentage	5.91%
Minimum [Member] | Secured Debt [Member] | 5.00%-5.99% Fixed Rate Senior Debt Due 2013-2017 [Member]
Debt Instrument [Line Items]
Stated percentage	5.00%
Debt Instrument, Maturity Year	2013
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 1.00%-1.99% Other Fixed Rate Senior Debt Due 2013-2014 [Member]
Debt Instrument [Line Items]
Stated percentage	1.00%
Debt Instrument, Maturity Year	2013
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 2.00%-2.99% Other Fixed Rate Senior Debt Due 2013-2015 [Member]
Debt Instrument [Line Items]
Stated percentage	2.00%
Debt Instrument, Maturity Year	2013
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 3.00%-3.99% Other Fixed Rate Senior Debt Due 2014-2016 [Member]
Debt Instrument [Line Items]
Stated percentage	3.00%
Debt Instrument, Maturity Year	2014
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 4.00%-4.99% Other Fixed Rate Senior Debt Due 2013-2018 [Member]
Debt Instrument [Line Items]
Stated percentage	4.00%
Debt Instrument, Maturity Year	2013
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 5.00%-5.49% Other Fixed Rate Senior Debt Due 2013-2021 [Member]
Debt Instrument [Line Items]
Stated percentage	5.00%
Debt Instrument, Maturity Year	2013
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 5.50%-5.99% Other Fixed Rate Senior Debt Due 2013-2018 [Member]
Debt Instrument [Line Items]
Stated percentage	5.50%
Debt Instrument, Maturity Year	2013
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 6.00%-6.49% Other Fixed Rate Senior Debt Due 2013-2017 [Member]
Debt Instrument [Line Items]
Stated percentage	6.00%
Debt Instrument, Maturity Year	2013
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 6.50%-6.99% due 2013 [Member]
Debt Instrument [Line Items]
Stated percentage	6.50%
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 7.00%-7.49% Other Fixed Rate Senior Debt Due 2023-2032 [Member]
Debt Instrument [Line Items]
Stated percentage	7.00%
Debt Instrument, Maturity Year	2023
Minimum [Member] | Other Fixed Rate Senior Debt [Member] | 7.50%-7.99 Other Fixed Rate Senior Debt Due 2012-2032 [Member]
Debt Instrument [Line Items]
Stated percentage	7.50%
Debt Instrument, Maturity Year	2019
Minimum [Member] | Variable Interest Rate Debt [Member] | .36%-2.78% Secured Financings Due 2012-2019 [Member]
Debt Instrument [Line Items]
Stated percentage	0.32%
Debt Instrument, Maturity Year	2013
Minimum [Member] | Variable Interest Rate Debt [Member] | Other Variable Interest Rate Senior Debt - .49% to 5.42%; due 2013 to 2016 [Member]
Debt Instrument [Line Items]
Stated percentage	0.49%
Debt Instrument, Maturity Year	2013
Maximum [Member] | Secured Debt [Member] | 5.00%-5.99% Fixed Rate Senior Debt Due 2013-2017 [Member]
Debt Instrument [Line Items]
Stated percentage	5.99%
Debt Instrument, Maturity Year	2017
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 1.00%-1.99% Other Fixed Rate Senior Debt Due 2013-2014 [Member]
Debt Instrument [Line Items]
Stated percentage	1.99%
Debt Instrument, Maturity Year	2014
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 2.00%-2.99% Other Fixed Rate Senior Debt Due 2013-2015 [Member]
Debt Instrument [Line Items]
Stated percentage	2.99%
Debt Instrument, Maturity Year	2015
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 3.00%-3.99% Other Fixed Rate Senior Debt Due 2014-2016 [Member]
Debt Instrument [Line Items]
Stated percentage	3.99%
Debt Instrument, Maturity Year	2016
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 4.00%-4.99% Other Fixed Rate Senior Debt Due 2013-2018 [Member]
Debt Instrument [Line Items]
Stated percentage	4.99%
Debt Instrument, Maturity Year	2018
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 5.00%-5.49% Other Fixed Rate Senior Debt Due 2013-2021 [Member]
Debt Instrument [Line Items]
Stated percentage	5.49%
Debt Instrument, Maturity Year	2021
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 5.50%-5.99% Other Fixed Rate Senior Debt Due 2013-2018 [Member]
Debt Instrument [Line Items]
Stated percentage	5.99%
Debt Instrument, Maturity Year	2018
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 6.00%-6.49% Other Fixed Rate Senior Debt Due 2013-2017 [Member]
Debt Instrument [Line Items]
Stated percentage	6.49%
Debt Instrument, Maturity Year	2017
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 6.50%-6.99% due 2013 [Member]
Debt Instrument [Line Items]
Stated percentage	6.99%
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 7.00%-7.49% Other Fixed Rate Senior Debt Due 2023-2032 [Member]
Debt Instrument [Line Items]
Stated percentage	7.49%
Debt Instrument, Maturity Year	2032
Maximum [Member] | Other Fixed Rate Senior Debt [Member] | 7.50%-7.99 Other Fixed Rate Senior Debt Due 2012-2032 [Member]
Debt Instrument [Line Items]
Stated percentage	7.99%
Debt Instrument, Maturity Year	2032
Maximum [Member] | Variable Interest Rate Debt [Member] | .36%-2.78% Secured Financings Due 2012-2019 [Member]
Debt Instrument [Line Items]
Stated percentage	2.71%
Debt Instrument, Maturity Year	2018
Maximum [Member] | Variable Interest Rate Debt [Member] | Other Variable Interest Rate Senior Debt - .49% to 5.42%; due 2013 to 2016 [Member]
Debt Instrument [Line Items]
Stated percentage	5.42%
Debt Instrument, Maturity Year	2016