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	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pooled Insurance Products with Fixed Income Guarantee	$ 9	$ 8
Pension Benefits Fair Value of Plan Assets of Underfunded Plans	9	8
Fair value of plan assets at end of year subtotal	9	8
Other international equity funds	82	65
Other fixed income securities	258	243
Defined Benefit Plan, Fair Value of Plan Assets	349	316	$ 351
Fair Value, Inputs, Level 1 [Member]
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]
Pooled Insurance Products with Fixed Income Guarantee	9	8
Defined Benefit Plan, Fair Value of Plan Assets	9	8
Fair Value, Inputs, Level 3 [Member]
Pooled Insurance Products with Fixed Income Guarantee	0	0
Defined Benefit Plan, Fair Value of Plan Assets	$ 0	$ 0