Income Taxes	9 Months Ended
Sep. 30, 2011
Income Tax Expense (Benefit) [Abstract]
Income Taxes	Income Taxes The Company’s income tax expense and resulting effective tax rate are based upon the respective estimated annual effective tax rates applicable for the respective periods adjusted for the effects of items required to be treated as discrete to the period, including adjustments to write down deferred tax assets determined not to be realizable due to the vesting or cancellation of equity-based compensation awards, changes in tax laws, changes in estimated exposures for uncertain tax positions, and other items. The Company’s effective tax rate for the three and nine months ended September 30, 2011 was impacted by $76.2 million of tax benefits associated with impairment charges recorded during the periods. The Company's tax benefit was favorably impacted by $28.2 million and $49.0 million in the three and nine months ended September 30, 2011, respectively, associated with the realization of unrecognized tax benefits, including interest and penalties, due to the expiration of various worldwide statutes of limitation. The effective tax rate for the three and nine months ended September 30, 2011 was also favorably impacted by a change in the geographical mix in earnings. The Company’s effective tax rate for the three and nine months ended September 30, 2010 was favorably impacted by $63.6 million due to the reversal of certain tax reserves. During the three months ended September 30, 2010, the Company settled its 2005 and 2006 U.S. federal income tax return examinations, including all issues that were at Appeals, and as part of this settlement, entered into binding closing agreements relating to specific issues under examination resulting in a reduction to the Company's unrecognized tax benefits in the amount of $63.6 million, including relevant penalties and interest. In addition, the Company's effective tax rate for the nine months ended September 30, 2010 was favorably impacted by $8.2 million due to the reversal of certain tax reserves upon resolution of a tax examination and was adversely affected by $6.7 million due primarily to the write-off of deferred tax assets determined not to be realizable upon the vesting of restricted stock. Moreover, the tax rate for the nine months ended September 30, 2010 was adversely impacted by the expiration of certain U.S. tax incentives, including credits for the certain research and development activities.

Income Taxes

9 Months Ended

Sep. 30, 2011

Income Tax Expense (Benefit) [Abstract]

The Company’s income tax expense and resulting effective tax rate are based upon the respective estimated annual effective tax rates applicable for the respective periods adjusted for the effects of items required to be treated as discrete to the period, including adjustments to write down deferred tax assets determined not to be realizable due to the vesting or cancellation of equity-based compensation awards, changes in tax laws, changes in estimated exposures for uncertain tax positions, and other items. The Company’s effective tax rate for the three and nine months ended September 30, 2011 was impacted by $76.2 million of tax benefits associated with impairment charges recorded during the periods. The Company's tax benefit was favorably impacted by $28.2 million and $49.0 million in the three and nine months ended September 30, 2011, respectively, associated with the realization of unrecognized tax benefits, including interest and penalties, due to the expiration of various worldwide statutes of limitation. The effective tax rate for the three and nine months ended September 30, 2011 was also favorably impacted by a change in the geographical mix in earnings.

The Company’s effective tax rate for the three and nine months ended September 30, 2010 was favorably impacted by $63.6 million due to the reversal of certain tax reserves. During the three months ended September 30, 2010, the Company settled its 2005 and 2006 U.S. federal income tax return examinations, including all issues that were at Appeals, and as part of this settlement, entered into binding closing agreements relating to specific issues under examination resulting in a reduction to the Company's unrecognized tax benefits in the amount of $63.6 million, including relevant penalties and interest. In addition, the Company's effective tax rate for the nine months ended September 30, 2010 was favorably impacted by $8.2 million due to the reversal of certain tax reserves upon resolution of a tax examination and was adversely affected by $6.7 million due primarily to the write-off of deferred tax assets determined not to be realizable upon the vesting of restricted stock. Moreover, the tax rate for the nine months ended September 30, 2010 was adversely impacted by the expiration of certain U.S. tax incentives, including credits for the certain research and development activities.