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Income Taxes Level 4 Capital Loss Carryover (Details) - USD ($)
Jun. 30, 2015
Dec. 31, 2014
Operating Loss Carryforwards [Line Items]    
Deferred Tax Assets, Capital Loss Carryforwards $ 518,000,000 $ 491,000,000
Operating Loss Carryforwards, Valuation Allowance   172,000,000
Unrecognized Tax Benefits 0 48,000,000
Expiring Tax Year 2019 [Member]    
Operating Loss Carryforwards [Line Items]    
Deferred Tax Assets, Capital Loss Carryforwards 491,000,000  
Expiring Tax Year 2020 [Member]    
Operating Loss Carryforwards [Line Items]    
Deferred Tax Assets, Capital Loss Carryforwards 27,000,000  
Before Tax [Member]    
Operating Loss Carryforwards [Line Items]    
Deferred Tax Assets, Capital Loss Carryforwards $ 181,000,000 $ 172,000,000