Supplemental Equity and Comprehensive Income Information - Reclass AOCI (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Amount Reclassified from Accumulated Other Comprehensive Income
Net of tax	$ (59)	$ (143)	$ (343)	$ (421)
Cumulative Translation Adjustment
Amount Reclassified from Accumulated Other Comprehensive Income
Deconsolidation of Venezuelan subsidiary			(142)
Total before tax			(142)
Net of tax			(142)
Defined Pension and Postretirement Plans Adjustment
Amount Reclassified from Accumulated Other Comprehensive Income
Deconsolidation of Venezuelan subsidiary			(2)
Prior service benefit	18	20	50	58
Net actuarial loss	(119)	(170)	(358)	(510)
Total before tax	(101)	(150)	(310)	(452)
Tax effect	25	36	70	108
Net of tax	(76)	(114)	(240)	(344)
Cash Flow Hedging Instruments, Unrealized Gain (Loss)
Amount Reclassified from Accumulated Other Comprehensive Income
Total before tax	21	(37)	48	(99)
Tax effect	(4)	8	(9)	22
Net of tax	17	(29)	39	(77)
Cash Flow Hedging Instruments, Unrealized Gain (Loss) \| Foreign currency forward/option contracts
Amount Reclassified from Accumulated Other Comprehensive Income
Cost of sales	22	$ (37)	50	(98)
Cash Flow Hedging Instruments, Unrealized Gain (Loss) \| Interest rate swap contracts
Amount Reclassified from Accumulated Other Comprehensive Income
Interest expense	$ (1)		$ (2)	$ (1)

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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