Pension and Postretirement Expense Level 4 (Details) - Non-U.S. Pension Plan Investments Measured at Fair Value (Foreign Pension Plans, Defined Benefit [Member], USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Other International Equity $ 68 $ 66  
Debt Securities Fixed Income 275 225  
Pooled Insurance Products with Fixed Income Guarantee 8 8  
Fair value of plan assets at end of year 23 13  
Defined Benefit Plan, Fair Value of Plan Assets 351 299 278
Fair Value, Inputs, Level 1 [Member]      
Other International Equity 0 0  
Debt Securities Fixed Income 0 0  
Pooled Insurance Products with Fixed Income Guarantee 0 0  
Defined Benefit Plan, Fair Value of Plan Assets 0 0  
Fair Value, Inputs, Level 2 [Member]      
Other International Equity 68 66  
Debt Securities Fixed Income 275 225  
Pooled Insurance Products with Fixed Income Guarantee 8 8  
Defined Benefit Plan, Fair Value of Plan Assets 351 299  
Fair Value, Inputs, Level 3 [Member]      
Other International Equity 0 0  
Debt Securities Fixed Income 0 0  
Pooled Insurance Products with Fixed Income Guarantee 0 0  
Defined Benefit Plan, Fair Value of Plan Assets $ 0 $ 0