|
Common Stock and Stock Plans, ESOP (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|
| Employee Stock Ownership Plan [Abstract] | |||
| Allocated shares (common) | 136,821,035 | 131,046,406 | 118,901,327 |
|
Preferred stock [Member]
|
|||
| Employee Stock Ownership Plan [Abstract] | |||
| Unreleased shares | 910,934 | 858,759 | 618,382 |
| Fair value of unreleased ESOP | $ 911 | $ 859 | $ 618 |
| Dividends paid to ESOP | 115 | 95 | 76 |
|
Common stock [Member]
|
|||
| Employee Stock Ownership Plan [Abstract] | |||
| Dividends paid to ESOP | $ 117 | $ 60 | $ 23 |
| X | ||||||||||
|
- Definition
The fair value of shares held by the ESOP as of the balance sheet date in which no ESOP participant has a vested interest and no lender has a claim. The fair value of an ESOP share is the amount the seller could reasonably expect to receive for it in a current sale between a willing buyer and a willing seller, that is, other than in a forced or liquidation sale, which would be the market price of the stock if it is publicly traded. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Dividends paid on stock held by an employee stock ownership plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The shares or units in an ESOP trust that have been assigned to individual participant accounts based on a known formula. IRS rules require allocations to be nondiscriminatory generally based on compensation, length of service, or a combination of both. For any particular participant such shares or units may be vested, unvested, or partially vested. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Shares contributed to the ESOP that have not yet been released, committed to be released, or allocated to participant accounts. Suspense shares generally collateralize ESOP debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|