Income Taxes (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | Jun. 30, 2011
Assumed Repatriation Of Earnings [Member] | Sep. 30, 2010
Assumed Repatriation Of Earnings [Member] | Jun. 30, 2010
Assumed Repatriation Of Earnings [Member] | Sep. 30, 2011
Assumed Repatriation Of Earnings [Member] | |
| Effective income tax rate | 33.00% | 34.00% | ||||||
| Current income tax expense | $ (248) | $ (310) | $ (301) | $ 696 | $ 19 | |||
| Deferred income tax expense | 746 | 580 | 2,184 | 349 | 725 | 23 | 52 | |
| Income tax expense (benefit) | $ 498 | $ 270 | $ 1,883 | $ 1,045 | $ 744 | |||
| X | ||||||||||
- Definition The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable Income or Loss from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|