Income Taxes	9 Months Ended
Sep. 30, 2012
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company provides a valuation allowance for deferred tax assets when it is more likely than not that some portion, or all, of its deferred tax assets will not be realized. The Company’s deferred tax asset valuation allowance increased from $4.1 billion as of December 31, 2011 to $4.9 billion as of September 30, 2012, including the impact of comprehensive income for the nine months ended September 30, 2012 and changes from other adjustments. Under current accounting rules, the Company is required to consider all items (including items recorded in other comprehensive income) in determining the amount of tax benefit that results from a loss from continuing operations and that should be allocated to continuing operations. Due to the significant volatility of items impacting other comprehensive income on a quarterly basis, the Company generally does not record any such tax benefit allocation until all items impacting other comprehensive income are known for the annual period. Thus, any such interim tax benefit allocation may subsequently be subject to reversal.

Income Taxes

9 Months Ended

Sep. 30, 2012

The Company provides a valuation allowance for deferred tax assets when it is more likely than not that some portion, or all, of its deferred tax assets will not be realized. The Company’s deferred tax asset valuation allowance increased from $4.1 billion as of December 31, 2011 to $4.9 billion as of September 30, 2012, including the impact of comprehensive income for the nine months ended September 30, 2012 and changes from other adjustments.

Under current accounting rules, the Company is required to consider all items (including items recorded in other comprehensive income) in determining the amount of tax benefit that results from a loss from continuing operations and that should be allocated to continuing operations. Due to the significant volatility of items impacting other comprehensive income on a quarterly basis, the Company generally does not record any such tax benefit allocation until all items impacting other comprehensive income are known for the annual period. Thus, any such interim tax benefit allocation may subsequently be subject to reversal.