Pension, Savings and Other Postretirement Benefit Plans - Textual (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined contribution savings plan, contribution expense recognized	$ 34	$ 33
Postretirement benefits credit	6	4
Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost	12	$ 21
Contributions to pension plans	17
Minimum | Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to funded pension plans in current year	50
Maximum | Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to funded pension plans in current year	$ 75
Scenario, Forecast | Change in Assumptions for Pension Plans | Minimum
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost			$ (50)
Scenario, Forecast | Change in Assumptions for Pension Plans | Maximum
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost			$ (75)