Income Taxes (Details 1)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%	(35.00%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	3.40%	2.30%	(1.80%)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance	(45.70%)	(42.30%)	32.90%
Effective Income Tax Rate Reconciliation, Tax Contingencies	(9.00%)	0.00%	0.00%
Effective Income Tax Rate Reconciliation Income Tax Allocation	0.00%	0.00%	(20.20%)	[1]
Effective Income Tax Rate Reconciliation, Other Adjustments	5.30%	7.60%	2.40%
Effective Income Tax Rate, Continuing Operations	(11.00%)	2.60%	(21.70%)

[1] We consider all income sources, including other comprehensive income, in determining the amount of tax benefit allocated to continuing operations (the “Income Tax Allocation”). For the year ended December 31, 2009, as a result of the Income Tax Allocation, we recorded a non-cash income tax benefit of $321 million on the loss from continuing operations, with an offsetting non-cash income tax expense of $321 million in other comprehensive income.