Consolidated statement of Comprehensive income YTD Statement - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income YTD [Abstract]
Profit of consolidated and affiliated companies	$ 4,997	$ 5,099
Foreign currency translation, net of tax (provision)/benefit of: 2019 - $(19); 2018 - $(18)	(186)	(292)
Current year prior service credit (cost), net of tax (provision)/benefit of: 2019 - $0; 2018 - $1	0	(2)
Amortization of prior service (credit) cost, net of tax (provision)/benefit of: 2019 - $8; 2018 - $5	(22)	(21)
Gains (losses) deferred, net of tax (provision)/benefit of: 2019 - $(15); 2018 - $(23)	53	73
(Gains) losses reclassified to earnings, net of tax (provision)/benefit of: 2019 - $23; 2018 - $32	(86)	(109)
Gains (losses) deferred, net of tax (provision)/benefit of: 2019 - $(10); 2018 - $3	34	(14)
Total other comprehensive income (loss), net of tax	(207)	(365)
Comprehensive income	4,790	4,734
Less: comprehensive income attributable to the noncontrolling interests	2	0
Comprehensive income attributable to shareholders	$ 4,788	$ 4,734

Statement of Comprehensive Income YTD [Abstract]

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