Income Taxes	6 Months Ended
Jun. 30, 2013
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes involves a significant amount of management judgment regarding interpretation of relevant facts and laws in the jurisdictions in which the Company operates. Future changes in applicable laws, projected levels of taxable income and tax planning could change the effective tax rate and tax balances recorded by the Company. In addition, tax authorities periodically review income tax returns filed by the Company and can raise issues regarding its filing positions, timing and amount of income or deductions, and the allocation of income among the jurisdictions in which the Company operates. A significant period of time may elapse between the filing of an income tax return and the ultimate resolution of an issue raised by a revenue authority with respect to that return. In the normal course of business, the Company is subject to examination by taxing authorities throughout the world, including such major jurisdictions as Brazil, Canada, China, Germany, Ireland, Italy, the Netherlands and the United States. In general, the examination of the Company’s material tax returns is complete for the years prior to 2001, with certain matters being resolved through appeals and litigation. In 2007, the Company received a notice from the IRS containing proposed adjustments to the Company's tax filings in connection with an audit of the 2001 and 2002 tax years. The IRS did not contest the validity of the Company's reincorporation in Bermuda. The most significant adjustments proposed by the IRS involved treating the entire intercompany debt incurred in connection with the Company's reincorporation in Bermuda as equity. As a result of this recharacterization, the IRS disallowed the deduction of interest paid on the debt and imposed dividend withholding taxes on the payments denominated as interest. The IRS also asserted an alternative argument to be applied if the intercompany debt is respected as debt. In that circumstance, the IRS proposed to ignore the entities that hold the debt and to which the interest was paid and impose 30% withholding tax on a portion of the interest payments as if they were made directly to a company that was not eligible for reduced U.S. withholding tax under a U.S. income tax treaty. The IRS asserted under this alternative theory that the Company owes additional taxes with respect to 2002 of approximately $84 million plus interest. The Company strongly disagreed with the view of the IRS and filed a protest. In 2010, the Company received an amended notice from the IRS eliminating its assertion that the intercompany debt incurred in connection with the Company's reincorporation in Bermuda should be treated as equity. However, the IRS continued to assert the alternative position described above. In addition, the IRS also provided notice that it is assessing penalties of 30% on the asserted underpayment of tax described above. The IRS recently indicated that it may assert that the Company also owes 30% withholding tax on the portion of the 2002 interest payments made on this debt upon which it did not previously assert withholding tax. Should the IRS do so, the Company believes it will assert that the Company owes an additional $20 million to $30 million in withholding tax for 2002 plus 30% penalties and interest. This would increase the total tax liability proposed for 2002 to $104-$114 million plus 30% penalties and interest. The Company has so far been unsuccessful in resolving this dispute and expects to receive a formal Notice of Deficiency from the IRS for 2002 shortly. When a taxpayer receives a Notice of Deficiency, it has 90 days to pay the tax or file a petition in the United States Tax Court. If this matter cannot be resolved in a satisfactory manner, the Company intends to pursue the matter in court. Recently the IRS examination team auditing the Company's 2003-2006 tax years provided Notices of Proposed Adjustment (NOPAs) related to the Company's interest payments on the intercompany debt issued in connection with its reincorporation in Bermuda. In these notices, which reflect the examination team's written position but are not a formal assertion of tax owed, the IRS asserts that the Company owes a total of approximately $665 million of additional taxes, as described more fully below, in connection with these interest payments for the 2003-2006 period, plus penalties and interest on these unpaid taxes. In these NOPAs, the IRS continues to take the alternative position on this intercompany debt, which was retired at the end of 2011, that it previously took for the Company's 2002 tax year and which is described above. As a result of this recharacterization, the IRS asserts that the Company owes approximately $455 million of withholding tax for 2003-2006 plus 30% penalties. The IRS also proposes to extend its previous position further and to treat all of the interest income from the intercompany debt as “earned” by IR-Limited and, as a result, recharacterize the distributions made by IR-Limited during the 2002-2006 tax years as taxable dividends instead of as a return of capital. Consequently the IRS asserts that the Company owes approximately $210 million of income tax on these dividends plus penalties of 20%. Although the Company expects it to do so, the IRS has not yet proposed any similar adjustments for years subsequent to 2006, as the federal income tax audits for those years are still in process or have not yet begun. In addition, the Company does not know how the IRS will apply its position to the different facts presented in those years or whether the IRS will take a similar position in future audits with respect to intercompany debt instruments not outstanding in prior years. The Company has vigorously contested all of these proposed adjustments and intends to continue to do so. Although the outcome of these matters cannot be predicted with certainty, based upon an analysis of the merits of the Company's position the Company believes that it is adequately reserved under the applicable accounting standards for these matters and does not expect that the ultimate resolution will have a material adverse impact on its future results of operations, financial condition, or cash flows. As the Company moves forward to resolve these matters with the IRS, the reserves established may be adjusted. Although the Company continues to contest the IRS's position, there can be no assurance that it will be successful. If the IRS's position with respect to the 2002-2006 tax years is ultimately sustained the Company would be required to record additional charges and the resulting liability will have a material adverse impact on its future results of operations, financial condition and cash flows. The Company believes that it has adequately provided for any reasonably foreseeable resolution of any tax disputes, but will adjust its reserves if events so dictate in accordance with GAAP. To the extent that the ultimate results differ from the original or adjusted estimates of the Company, the effect will be recorded in the Provision for income taxes. Total unrecognized tax benefits as of June 30, 2013 and December 31, 2012 were $537.5 million and $533.7 million, respectively.

Income Taxes

The provision for income taxes involves a significant amount of management judgment regarding interpretation of relevant facts and laws in the jurisdictions in which the Company operates. Future changes in applicable laws, projected levels of taxable income and tax planning could change the effective tax rate and tax balances recorded by the Company. In addition, tax authorities periodically review income tax returns filed by the Company and can raise issues regarding its filing positions, timing and amount of income or deductions, and the allocation of income among the jurisdictions in which the Company operates. A significant period of time may elapse between the filing of an income tax return and the ultimate resolution of an issue raised by a revenue authority with respect to that return. In the normal course of business, the Company is subject to examination by taxing authorities throughout the world, including such major jurisdictions as Brazil, Canada, China, Germany, Ireland, Italy, the Netherlands and the United States. In general, the examination of the Company’s material tax returns is complete for the years prior to 2001, with certain matters being resolved through appeals and litigation.

In 2007, the Company received a notice from the IRS containing proposed adjustments to the Company's tax filings in connection with an audit of the 2001 and 2002 tax years. The IRS did not contest the validity of the Company's reincorporation in Bermuda. The most significant adjustments proposed by the IRS involved treating the entire intercompany debt incurred in connection with the Company's reincorporation in Bermuda as equity. As a result of this recharacterization, the IRS disallowed the deduction of interest paid on the debt and imposed dividend withholding taxes on the payments denominated as interest. The IRS also asserted an alternative argument to be applied if the intercompany debt is respected as debt. In that circumstance, the IRS proposed to ignore the entities that hold the debt and to which the interest was paid and impose 30% withholding tax on a portion of the interest payments as if they were made directly to a company that was not eligible for reduced U.S. withholding tax under a U.S. income tax treaty. The IRS asserted under this alternative theory that the Company owes additional taxes with respect to 2002 of approximately $84 million plus interest. The Company strongly disagreed with the view of the IRS and filed a protest.

In 2010, the Company received an amended notice from the IRS eliminating its assertion that the intercompany debt incurred in connection with the Company's reincorporation in Bermuda should be treated as equity. However, the IRS continued to assert the alternative position described above. In addition, the IRS also provided notice that it is assessing penalties of 30% on the asserted underpayment of tax described above.

The IRS recently indicated that it may assert that the Company also owes 30% withholding tax on the portion of the 2002 interest payments made on this debt upon which it did not previously assert withholding tax. Should the IRS do so, the Company believes it will assert that the Company owes an additional $20 million to $30 million in withholding tax for 2002 plus 30% penalties and interest. This would increase the total tax liability proposed for 2002 to $104-$114 million plus 30% penalties and interest.

The Company has so far been unsuccessful in resolving this dispute and expects to receive a formal Notice of Deficiency from the IRS for 2002 shortly. When a taxpayer receives a Notice of Deficiency, it has 90 days to pay the tax or file a petition in the United States Tax Court. If this matter cannot be resolved in a satisfactory manner, the Company intends to pursue the matter in court.

Recently the IRS examination team auditing the Company's 2003-2006 tax years provided Notices of Proposed Adjustment (NOPAs) related to the Company's interest payments on the intercompany debt issued in connection with its reincorporation in Bermuda. In these notices, which reflect the examination team's written position but are not a formal assertion of tax owed, the IRS asserts that the Company owes a total of approximately $665 million of additional taxes, as described more fully below, in connection with these interest payments for the 2003-2006 period, plus penalties and interest on these unpaid taxes.

In these NOPAs, the IRS continues to take the alternative position on this intercompany debt, which was retired at the end of 2011, that it previously took for the Company's 2002 tax year and which is described above. As a result of this recharacterization, the IRS asserts that the Company owes approximately $455 million of withholding tax for 2003-2006 plus 30% penalties.

The IRS also proposes to extend its previous position further and to treat all of the interest income from the intercompany debt as “earned” by IR-Limited and, as a result, recharacterize the distributions made by IR-Limited during the 2002-2006 tax years as taxable dividends instead of as a return of capital. Consequently the IRS asserts that the Company owes approximately $210 million of income tax on these dividends plus penalties of 20%.

Although the Company expects it to do so, the IRS has not yet proposed any similar adjustments for years subsequent to 2006, as the federal income tax audits for those years are still in process or have not yet begun. In addition, the Company does not know how the IRS will apply its position to the different facts presented in those years or whether the IRS will take a similar position in future audits with respect to intercompany debt instruments not outstanding in prior years.

The Company has vigorously contested all of these proposed adjustments and intends to continue to do so. Although the outcome of these matters cannot be predicted with certainty, based upon an analysis of the merits of the Company's position the Company believes that it is adequately reserved under the applicable accounting standards for these matters and does not expect that the ultimate resolution will have a material adverse impact on its future results of operations, financial condition, or cash flows. As the Company moves forward to resolve these matters with the IRS, the reserves established may be adjusted. Although the Company continues to contest the IRS's position, there can be no assurance that it will be successful. If the IRS's position with respect to the 2002-2006 tax years is ultimately sustained the Company would be required to record additional charges and the resulting liability will have a material adverse impact on its future results of operations, financial condition and cash flows.

The Company believes that it has adequately provided for any reasonably foreseeable resolution of any tax disputes, but will adjust its reserves if events so dictate in accordance with GAAP. To the extent that the ultimate results differ from the original or adjusted estimates of the Company, the effect will be recorded in the Provision for income taxes.

Total unrecognized tax benefits as of June 30, 2013 and December 31, 2012 were $537.5 million and $533.7 million, respectively.