Income Taxes - Pre-tax Income and Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Income before income taxes and equity income	$ 6,168	$ 6,386	$ 9,731
Current income tax expense (benefit)
U.S. federal	42	(104)	18
U.S. state and local	102	113	83
Non-U.S.	758	577	552
Total current income tax expense	902	586	653
Deferred income tax expense (benefit)
U.S. federal	(145)	(578)	7,831
U.S. state and local	3	250	(187)
Non-U.S.	9	216	3,236
Total deferred income tax expense (benefit)	(133)	(112)	10,880
Total income tax expense	769	474	11,533
Basis differences from reinvested earnings	3,200	2,900
China JVs
Deferred income tax expense (benefit)
Additional basis differences	4,100	4,100
U.S.
Income Tax Contingency [Line Items]
Income before income taxes and equity income	3,826	4,433	8,399
Non-U.S.
Income Tax Contingency [Line Items]
Income before income taxes and equity income	$ 2,342	$ 1,953	$ 1,332

Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee. This amount represent the portion of basis difference attributable to fair value changes of the investees.

No definition available.