Income Taxes Level 4 (Details) - Deferred Tax Assets and Liabilities (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Assets        
Non-pension post-employment $ 8 $ 9    
Accrued and other expenses 91 74    
Deferred Tax Assets, Property, Plant and Equipment 3 2    
Loss and credit carryforwards 647 615    
Pension and postretirement benefit liabilities 58 39    
Gross deferred tax assets 815 748    
Valuation allowance (588) (518) (122) (432)
Net deferred tax asset 227 230    
Liabilities [Abstract]        
Property, plant and equipment (119) (125)    
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Pensions 0 5    
Unrepatriated earnings of foreign subsidiaries (73) (65)    
Intangible assets (25) (28)    
Gross deferred tax liabilities (217) (223)    
Net deferred tax asset $ 10 $ 7