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Income Taxes (Details Textuals) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2013
|
Sep. 30, 2012
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Sep. 30, 2013
|
Sep. 30, 2012
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| Income Taxes (Textuals) | ||||
| Unrecognized tax benefits as a result of potential resolutions of prior years' tax | $ 736 | $ 736 | ||
| Unrecognized tax benefits, amounts recorded to equity | 532 | 532 | ||
| Unrecognized tax benefits impact not possible to quantify | 145 | 145 | ||
| Actual tax rates | 31.80% | 33.20% | 31.40% | 30.40% |
| Unrecognized tax benefits, amounts not impacting effective tax rate - temporary differences | $ 59 | $ 59 | ||
|
Internal Revenue Service (IRS) [Member] | Earliest Year [Member]
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| Income Tax Contingency [Line Items] | ||||
| Open tax years by major tax jurisdiction | 2008 | |||
|
Internal Revenue Service (IRS) [Member] | Latest Year [Member]
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| Income Tax Contingency [Line Items] | ||||
| Open tax years by major tax jurisdiction | 2011 | |||