Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Profit of consolidated and affiliated companies	$ 671	$ 1,494	$ 2,223	$ 4,997
Other Comprehensive Income (Loss), Net of Tax:
Foreign currency translation, net of tax	291	(263)	106	(186)
Pension and other postretirement benefits:
Current year prior service credit (cost), net of tax	(1)	0	1	0
Amortization of prior service (credit) cost, net of tax	(7)	(8)	(21)	(22)
Derivative financial instruments:
Gains (losses) deferred, net of tax	3	59	(72)	53
(Gains) losses reclassified to earnings, net of tax	73	(76)	76	(86)
Available-for-sale securities:
Gain (Loss) deferred, net of tax	8	4	29	34
Total other comprehensive income (loss), net of tax	367	(284)	119	(207)
Comprehensive income	1,038	1,210	2,342	4,790
Less: comprehensive income attributable to the noncontrolling interests			5	2
Comprehensive income attributable to shareholders	$ 1,035	$ 1,210	$ 2,337	$ 4,788