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Income Taxes (Income Tax Contingencies) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Income Tax Disclosure [Abstract] | |||
| Balance, beginning of period | $ (92) | $ (74) | $ (88) |
| Increases related to prior year tax positions | (7) | (19) | 0 |
| Decreases related to prior year tax positions | 8 | 1 | 1 |
| Settlements | 10 | 0 | 0 |
| Decrease related to lapse of statute of limitations | 13 | 0 | 13 |
| Balance, end of period | $ (68) | $ (92) | $ (74) |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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