|
ESOP Preferred Stock (Details) (USD $)
In Millions, except Share data, unless otherwise specified
|
3 Months Ended |
12 Months Ended |
|
Mar. 31, 2013
|
Dec. 31, 2012
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Shares issued and outstanding |
1,815,055 |
910,934 |
| Carrying value |
1,815 |
911 |
| Unearned ESOP shares |
(1,971) |
(986) |
|
Employee Stock Ownership Plan Preferred Stock 2004 [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Shares issued and outstanding |
7,413 |
7,413 |
| Carrying value |
7 |
7 |
|
Employee Stock Ownership Plan Preferred Stock 2004 [Member] | Minimum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
8.50% |
8.50% |
|
Employee Stock Ownership Plan Preferred Stock 2004 [Member] | Maximum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
9.50% |
9.50% |
|
Employee Stock Ownership Plan Preferred Stock 2005 [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Shares issued and outstanding |
18,882 |
18,882 |
| Carrying value |
19 |
19 |
|
Employee Stock Ownership Plan Preferred Stock 2005 [Member] | Minimum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
9.75% |
9.75% |
|
Employee Stock Ownership Plan Preferred Stock 2005 [Member] | Maximum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
10.75% |
10.75% |
|
Employee Stock Ownership Plan Preferred Stock 2006 [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Shares issued and outstanding |
33,559 |
33,559 |
| Carrying value |
34 |
34 |
|
Employee Stock Ownership Plan Preferred Stock 2006 [Member] | Minimum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
10.75% |
10.75% |
|
Employee Stock Ownership Plan Preferred Stock 2006 [Member] | Maximum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
11.75% |
11.75% |
|
Employee Stock Ownership Plan Preferred Stock 2007 [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Shares issued and outstanding |
53,768 |
53,768 |
| Carrying value |
54 |
54 |
|
Employee Stock Ownership Plan Preferred Stock 2007 [Member] | Minimum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
10.75% |
10.75% |
|
Employee Stock Ownership Plan Preferred Stock 2007 [Member] | Maximum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
11.75% |
11.75% |
|
Employee Stock Ownership Plan Preferred Stock 2008 [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Shares issued and outstanding |
73,434 |
73,434 |
| Carrying value |
73 |
73 |
|
Employee Stock Ownership Plan Preferred Stock 2008 [Member] | Minimum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
10.50% |
10.50% |
|
Employee Stock Ownership Plan Preferred Stock 2008 [Member] | Maximum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
11.50% |
11.50% |
|
Employee Stock Ownership Plan Preferred Stock 2010 [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Shares issued and outstanding |
201,011 |
201,011 |
| Carrying value |
201 |
201 |
|
Employee Stock Ownership Plan Preferred Stock 2010 [Member] | Minimum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
9.50% |
9.50% |
|
Employee Stock Ownership Plan Preferred Stock 2010 [Member] | Maximum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
10.50% |
10.50% |
|
Employee Stock Ownership Plan Preferred Stock 2011 [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Shares issued and outstanding |
277,263 |
277,263 |
| Carrying value |
277 |
277 |
|
Employee Stock Ownership Plan Preferred Stock 2011 [Member] | Minimum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
9.00% |
9.00% |
|
Employee Stock Ownership Plan Preferred Stock 2011 [Member] | Maximum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
10.00% |
10.00% |
|
Employee Stock Ownership Plan Preferred Stock 2012 [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Shares issued and outstanding |
245,604 |
245,604 |
| Carrying value |
246 |
246 |
|
Employee Stock Ownership Plan Preferred Stock 2012 [Member] | Minimum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
10.00% |
10.00% |
|
Employee Stock Ownership Plan Preferred Stock 2012 [Member] | Maximum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
11.00% |
11.00% |
|
Employee Stock Ownership Plan Preferred Stock 2013 [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Shares issued and outstanding |
904,121 |
0 |
| Carrying value |
904 |
0 |
|
Employee Stock Ownership Plan Preferred Stock 2013 [Member] | Minimum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
8.50% |
|
|
Employee Stock Ownership Plan Preferred Stock 2013 [Member] | Maximum [Member]
|
|
|
| Detail of Employee Stock Ownership Plan Preferred Stock [Abstract] |
|
|
| Adjustable dividend rate |
11.00% |
|