v3.2.0.727
Commitments And Contingencies Environmental Matters (Details) - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Environmental Exit Cost [Line Items]    
Accrual for Environmental Loss Contingencies $ 5 $ 5
Accrued Environmental Loss Contingencies, Noncurrent 4 4
Accrued Liabilities    
Environmental Exit Cost [Line Items]    
Accrued Environmental Loss Contingencies, Current 1 1
Other Long-Term Liabilities    
Environmental Exit Cost [Line Items]    
Accrued Environmental Loss Contingencies, Noncurrent 4 4
Discontinued Operations | Liabilities Held for Sale    
Environmental Exit Cost [Line Items]    
Accrual for Environmental Loss Contingencies $ 7 $ 16