Costs Associated with Rationalization Programs - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) employee	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Rationalizations accrual balance	$ 149		$ 213
Rationalizations	37	$ 29
Rationalization reversals	5
Rationalization charges incurred to date			$ 730
Rationalization charges expected to be incurred in future periods	$ 18
Expected number of job reductions | employee	800
Current Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations	$ 31	23
Expected number of job reductions | employee	300
Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations	$ 6	6
Number of associates released | employee	200
Employee Severance
Restructuring Cost and Reserve [Line Items]
Rationalizations accrual balance	$ 58
Employee Severance | Current Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations	25
EMEA Restructuring, Manufacturing Employee Severance
Restructuring Cost and Reserve [Line Items]
Rationalizations accrual balance	45
Philippsburg Restructuring
Restructuring Cost and Reserve [Line Items]
Rationalizations accrual balance	16
Philippsburg Restructuring | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations	7
EMEA Restructuring, SAG Employee Severance | Current Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations		17
Europe, Middle East, and Africa Restructuring Plan - Operating Efficiency
Restructuring Cost and Reserve [Line Items]
Rationalizations accrual balance	14
Europe, Middle East, and Africa Restructuring Plan - Operating Efficiency | Current Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations	$ 6	6
Wolverhampton Restructuring Plan | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations		2
Wittlich Restructuring Plan | Prior Year Plans
Restructuring Cost and Reserve [Line Items]
Rationalizations		$ 2
Amiens Restructuring | Amiens Labor Claims
Restructuring Cost and Reserve [Line Items]
Loss contingency, number of plaintiffs | employee	840