Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Millions	Total	Common stock	Treasury stock	Profit employed in the business	Accumulated other comprehensive income (loss)	Noncontrolling interests
Balance at Dec. 31, 2015	$ 14,885	$ 5,238	$ (17,640)	$ 29,246	$ (2,035)	$ 76
Increase (Decrease) in Shareholders' Equity
Profit of consolidated and affiliated companies	272	0	0	271	0	1
Foreign currency translation, net of tax	408	0	0	0	408	0
Pension and other postretirement benefits, net of tax	108	0	0	0	108	0
Derivative financial instruments, net of tax	18	0	0	0	18	0
Available-for-sale securities, net of tax	8	0	0	0	8	0
Distribution to noncontrolling interests	(1)	0	0	0	0	(1)
Common shares issued from treasury stock for stock-based compensation: 1,546,856 and 2,604,284 for the three months ended March 31, 2017 and 2016, respectively	(45)	(90)	45	0	0	0
Stock-based compensation expense	101	101	0	0	0	0
Net excess tax benefits from stock-based compensation	(6)	(6)	0	0	0	0
Other	5	4	0	0	0	1
Balance at Mar. 31, 2016	15,753	5,247	(17,595)	29,517	(1,493)	77
Balance at Dec. 31, 2016	13,213	5,277	(17,478)	27,377	(2,039)	76
Increase (Decrease) in Shareholders' Equity
Adjustment to adopt stock-based compensation guidance	15	0	0	15	0	0
Balance at Jan. 01, 2017	13,228	5,277	(17,478)	27,392	(2,039)	76
Balance at Dec. 31, 2016	13,213	5,277	(17,478)	27,377	(2,039)	76
Increase (Decrease) in Shareholders' Equity
Profit of consolidated and affiliated companies	194	0	0	192	0	2
Foreign currency translation, net of tax	147	0	0	0	147	0
Pension and other postretirement benefits, net of tax	4	0	0	0	4	0
Derivative financial instruments, net of tax	50	0	0	0	50	0
Available-for-sale securities, net of tax	11	0	0	0	11	0
Distribution to noncontrolling interests	(6)	0	0	0	0	(6)
Common shares issued from treasury stock for stock-based compensation: 1,546,856 and 2,604,284 for the three months ended March 31, 2017 and 2016, respectively	(19)	(106)	87	0	0	0
Stock-based compensation expense	49	49	0	0	0	0
Other	2	2	0	0	0	0
Balance at Mar. 31, 2017	$ 13,660	$ 5,222	$ (17,391)	$ 27,584	$ (1,827)	$ 72