Income Taxes	9 Months Ended
Sep. 30, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our tax provision or benefit from income taxes for interim periods is determined using an estimate of our annual effective tax rate, adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter we update our estimate of the annual effective tax rate, and if our estimated tax rate changes, we make a cumulative adjustment. Our quarterly tax provision, and our quarterly estimate of our annual effective tax rate, is subject to significant variation due to several factors, including variability in accurately predicting our pre-tax and taxable income and loss and the mix of jurisdictions to which they relate, changes in how we do business, acquisitions (including integrations) and investments, audit developments, foreign currency gains (losses), changes in law, regulations, and administrative practices, and relative changes of expenses or losses for which tax benefits are not recognized. Additionally, our effective tax rate can be more or less volatile based on the amount of pre-tax income. For example, the impact of discrete items and non-deductible expenses on our effective tax rate is greater when our pre-tax income is lower. In 2013, our effective tax rate will be significantly affected by the favorable impact of earnings in lower tax rate jurisdictions and the adverse effect of losses incurred in certain foreign jurisdictions for which we may not realize a tax benefit. Income earned in lower tax jurisdictions is primarily related to our European operations, which are headquartered in Luxembourg. Losses incurred in foreign jurisdictions for which we may not realize a tax benefit reduce our pre-tax income without a corresponding reduction in our tax expense, and therefore increase our effective tax rate. The year to date tax benefit as of September 30, 2013 includes $54 million of discrete tax benefits primarily resulting from the retroactive reinstatement of the federal research and development credit that was enacted in January 2013. Cash paid for income taxes (net of refunds) was $23 million and $21 million in Q3 2013 and Q3 2012, and $143 million and $60 million for the nine months ended September 30, 2013 and 2012. As of September 30, 2013, and December 31, 2012, tax contingencies were $336 million and $294 million. We expect the total amount of tax contingencies will grow in 2013. In addition, changes in state, federal, and foreign tax laws may increase our tax contingencies. The timing of the resolution of income tax examinations is highly uncertain, and the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ from the amounts accrued. It is reasonably possible that within the next 12 months we will receive additional assessments by various tax authorities or possibly reach resolution of income tax examinations in one or more jurisdictions. These assessments or settlements may or may not result in changes to our contingencies related to positions on prior years’ tax filings. We are under examination, or may be subject to examination, by the Internal Revenue Service (“IRS”) for the calendar year 2005 or thereafter. These examinations may lead to ordinary course adjustments or proposed adjustments to our taxes or our net operating losses. As previously disclosed, we have received Notices of Proposed Adjustment from the IRS for the 2005 and 2006 calendar years relating to transfer pricing with our foreign subsidiaries. The IRS is seeking to increase our U.S. taxable income by an amount that would result in additional federal tax over a seven year period beginning in 2005, totaling approximately $1.5 billion, subject to interest. To date, we have not resolved this matter administratively and, in December 2012, we petitioned the U.S. Tax Court to resolve the matter. We continue to disagree with these IRS positions and intend to vigorously contest them. Certain of our subsidiaries are under examination or investigation or may be subject to examination or investigation by the French Tax Administration (“FTA”) for calendar year 2006 or thereafter. These examinations may lead to ordinary course adjustments or proposed adjustments to our taxes. While we have not yet received a final assessment from the FTA, in September 2012, we received proposed tax assessment notices for calendar years 2006 through 2010 relating to the allocation of income between foreign jurisdictions. The notices propose additional French tax of approximately $250 million, including interest and penalties through the date of the assessment. We disagree with the proposed assessment and intend to vigorously contest it. We plan to pursue all available administrative remedies at the FTA, and if we are not able to resolve this matter with the FTA, we plan to pursue judicial remedies. We are also subject to taxation in various states and other foreign jurisdictions including China, Germany, Japan, Luxembourg, and the United Kingdom. We are under or may be subject to audit or examination and additional assessments by these particular tax authorities for the calendar year 2003 and thereafter.

Income Taxes

Our tax provision or benefit from income taxes for interim periods is determined using an estimate of our annual effective tax rate, adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter we update our estimate of the annual effective tax rate, and if our estimated tax rate changes, we make a cumulative adjustment.

Our quarterly tax provision, and our quarterly estimate of our annual effective tax rate, is subject to significant variation due to several factors, including variability in accurately predicting our pre-tax and taxable income and loss and the mix of jurisdictions to which they relate, changes in how we do business, acquisitions (including integrations) and investments, audit developments, foreign currency gains (losses), changes in law, regulations, and administrative practices, and relative changes of expenses or losses for which tax benefits are not recognized. Additionally, our effective tax rate can be more or less volatile based on the amount of pre-tax income. For example, the impact of discrete items and non-deductible expenses on our effective tax rate is greater when our pre-tax income is lower.

In 2013, our effective tax rate will be significantly affected by the favorable impact of earnings in lower tax rate jurisdictions and the adverse effect of losses incurred in certain foreign jurisdictions for which we may not realize a tax benefit. Income earned in lower tax jurisdictions is primarily related to our European operations, which are headquartered in Luxembourg. Losses incurred in foreign jurisdictions for which we may not realize a tax benefit reduce our pre-tax income without a corresponding reduction in our tax expense, and therefore increase our effective tax rate.

The year to date tax benefit as of September 30, 2013 includes $54 million of discrete tax benefits primarily resulting from the retroactive reinstatement of the federal research and development credit that was enacted in January 2013.

Cash paid for income taxes (net of refunds) was $23 million and $21 million in Q3 2013 and Q3 2012, and $143 million and $60 million for the nine months ended September 30, 2013 and 2012.

As of September 30, 2013, and December 31, 2012, tax contingencies were $336 million and $294 million. We expect the total amount of tax contingencies will grow in 2013. In addition, changes in state, federal, and foreign tax laws may increase our tax contingencies. The timing of the resolution of income tax examinations is highly uncertain, and the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ from the amounts accrued. It is reasonably possible that within the next 12 months we will receive additional assessments by various tax authorities or possibly reach resolution of income tax examinations in one or more jurisdictions. These assessments or settlements may or may not result in changes to our contingencies related to positions on prior years’ tax filings.

We are under examination, or may be subject to examination, by the Internal Revenue Service (“IRS”) for the calendar year 2005 or thereafter. These examinations may lead to ordinary course adjustments or proposed adjustments to our taxes or our net operating losses. As previously disclosed, we have received Notices of Proposed Adjustment from the IRS for the 2005 and 2006 calendar years relating to transfer pricing with our foreign subsidiaries. The IRS is seeking to increase our U.S. taxable income by an amount that would result in additional federal tax over a seven year period beginning in 2005, totaling approximately $1.5 billion, subject to interest. To date, we have not resolved this matter administratively and, in December 2012, we petitioned the U.S. Tax Court to resolve the matter. We continue to disagree with these IRS positions and intend to vigorously contest them.

Certain of our subsidiaries are under examination or investigation or may be subject to examination or investigation by the French Tax Administration (“FTA”) for calendar year 2006 or thereafter. These examinations may lead to ordinary course adjustments or proposed adjustments to our taxes. While we have not yet received a final assessment from the FTA, in September 2012, we received proposed tax assessment notices for calendar years 2006 through 2010 relating to the allocation of income between foreign jurisdictions. The notices propose additional French tax of approximately $250 million, including interest and penalties through the date of the assessment. We disagree with the proposed assessment and intend to vigorously contest it. We plan to pursue all available administrative remedies at the FTA, and if we are not able to resolve this matter with the FTA, we plan to pursue judicial remedies. We are also subject to taxation in various states and other foreign jurisdictions including China, Germany, Japan, Luxembourg, and the United Kingdom. We are under or may be subject to audit or examination and additional assessments by these particular tax authorities for the calendar year 2003 and thereafter.