Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2009	Jun. 30, 2012
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Valuation Allowance		$ 10,600,000,000
Non Cash Income Tax Benefit Loss From Continuing Operations	(321,000,000)
Non Cash Income Tax Expense Recorded In Other Comprehensive Income	321,000,000
Future Tax Expense (Benefit)		$ 321,000,000