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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 30, 2013
Equity [Abstract] |
Components of Accumulated Other Comprehensive Income (Loss) | The components of accumulated other comprehensive income (loss) are as follows (in millions):
|  |  |  |  | Derivative |  |  | Defined |  |  |  |
|  | Currency |  |  | Financial |  |  | Benefit |  |  |  |
|  | Translation |  |  | Instruments, |  |  | Plans, |  |  |  |
|  | Adjustments |  |  | Net of Tax |  |  | Net of Tax |  |  | Total |
Balance at December 31, 2012 |  | $ | 132 |  |  | $ | 42 |  |  | $ | (67 | ) |  | $ | 107 |
Accumulated other comprehensive income (loss) before reclassifications |  |  | (213 | ) |  |  | (68 | ) |  |  | — |  |  |  | (281 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | (25 | ) |  |  | (2 | ) |  |  | — |  |  |  | (27 | )
Balance at June 30, 2013 |  | $ | (106 | ) |  | $ | (28 | ) |  | $ | (67 | ) |  | $ | (201 | )
Components of Amounts Reclassified from Accumulated Other Comprehensive Income Loss | The components of amounts reclassified from accumulated other comprehensive income (loss) are as follows (in millions):
|  | Three Months Ended June 30, |
|  | 2013 |  |  | 2012 |
|  | Currency |  |  | Derivative |  |  | Defined |  |  |  |  |  | Currency |  |  | Derivative |  |  | Defined |  |  |  |
|  | Translation |  |  | Financial |  |  | Benefit |  |  |  |  |  | Translation |  |  | Financial |  |  | Benefit |  |  |  |
|  | Adjustments |  |  | Instruments |  |  | Plans |  |  | Total |  |  | Adjustments |  |  | Instruments |  |  | Plans |  |  | Total |
Revenue |  | $ | — |  |  | $ | (2 | ) |  | $ | — |  |  | $ | (2 | ) |  | $ | — |  |  | $ | 2 |  |  | $ | — |  |  | $ | 2 |
Cost of revenue |  |  | — |  |  |  | 4 |  |  |  | — |  |  |  | 4 |  |  |  | — |  |  |  | 5 |  |  |  | — |  |  |  | 5 |
Other income (expense), net |  |  | (25 | ) |  |  | — |  |  |  | — |  |  |  | (25 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Tax effect |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (2 | ) |  |  | — |  |  |  | (2 | )
|  | $ | (25 | ) |  | $ | 2 |  |  | $ | — |  |  | $ | (23 | ) |  | $ | — |  |  | $ | 5 |  |  | $ | — |  |  | $ | 5 |
|  | Six Months Ended June 30, |
|  | 2013 |  |  | 2012 |
|  | Currency |  |  | Derivative |  |  | Defined |  |  |  |  |  | Currency |  |  | Derivative |  |  | Defined |  |  |  |
|  | Translation |  |  | Financial |  |  | Benefit |  |  |  |  |  | Translation |  |  | Financial |  |  | Benefit |  |  |  |
|  | Adjustments |  |  | Instruments |  |  | Plans |  |  | Total |  |  | Adjustments |  |  | Instruments |  |  | Plans |  |  | Total |
Revenue |  | $ | — |  |  | $ | (4 | ) |  | $ | — |  |  | $ | (4 | ) |  | $ | — |  |  | $ | 6 |  |  | $ | — |  |  | $ | 6 |
Cost of revenue |  |  | — |  |  |  | 1 |  |  |  | — |  |  |  | 1 |  |  |  | — |  |  |  | 11 |  |  |  | — |  |  |  | 11 |
Other income (expense), net |  |  | (25 | ) |  |  | — |  |  |  | — |  |  |  | (25 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Tax effect |  |  | — |  |  |  | 1 |  |  |  | — |  |  |  | 1 |  |  |  | — |  |  |  | (5 | ) |  |  | — |  |  |  | (5 | )
|  | $ | (25 | ) |  | $ | (2 | ) |  | $ | — |  |  | $ | (27 | ) |  | $ | — |  |  | $ | 12 |  |  | $ | — |  |  | $ | 12 |

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- Definition Schedule of Reclassifications Out of Accumulated Other Comprehensive Income Loss [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 + Details
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