Consolidated Statement of Changes in Stockholders' Equity (USD $) In Millions, unless otherwise specified		Total	Common stock	Treasury stock	Profit employed in the business	Accumulated other comprehensive income (loss)	Noncontrolling interests
Balance at Dec. 31, 2013		$ 20,878	$ 4,709	$ (11,854)	$ 31,854	$ (3,898)	$ 67
Increase (Decrease) in Stockholders' Equity
Profit of consolidated and affiliated companies		925	0	0	922	0	3
Foreign currency translation, net of tax		39	0	0	0	40	(1)
Pension and other postretirement benefits, net of tax		80	0	0	0	80	0
Derivative financial instruments, net of tax		(21)	0	0	0	(21)	0
Available-for-sale securities, net of tax		(2)	0	0	0	(2)	0
Change in ownership from noncontrolling interests		2	0	0	0	0	2
Dividends declared		(1)	0	0	(1)	0	0
Distribution to noncontrolling interests		(7)	0	0	0	0	(7)
Common shares issued from treasury stock for stock-based compensation: 2,257,067 and 4,522,294 for the three months ended March 31, 2015 and 2014, respectively		92	(58)	150	0	0	0
Stock-based compensation expense		53	53	0	0	0	0
Net excess tax benefits from stock-based compensation		69	69	0	0	0	0
Common shares repurchased: 4,779,963 and 18,110,735 for the three months ended March 31, 2015 and 2014, respectively	[1]	(1,738)	0	(1,738)	0	0	0
Balance at Mar. 31, 2014		20,369	4,773	(13,442)	32,775	(3,801)	64
Balance at Dec. 31, 2014		16,826	5,016	(15,726)	33,887	(6,431)	80
Increase (Decrease) in Stockholders' Equity
Profit of consolidated and affiliated companies		1,114	0	0	1,111	0	3
Foreign currency translation, net of tax		(791)	0	0	0	(791)	0
Pension and other postretirement benefits, net of tax		105	0	0	0	105	0
Derivative financial instruments, net of tax		10	0	0	0	10	0
Available-for-sale securities, net of tax		6	0	0	0	6	0
Distribution to noncontrolling interests		(7)	0	0	0	0	(7)
Common shares issued from treasury stock for stock-based compensation: 2,257,067 and 4,522,294 for the three months ended March 31, 2015 and 2014, respectively		32	(58)	90	0	0	0
Stock-based compensation expense		135	135	0	0	0	0
Net excess tax benefits from stock-based compensation		8	8	0	0	0	0
Common shares repurchased: 4,779,963 and 18,110,735 for the three months ended March 31, 2015 and 2014, respectively	[1]	(400)	0	(400)	0	0	0
Balance at Mar. 31, 2015		$ 17,038	$ 5,101	$ (16,036)	$ 34,998	$ (7,101)	$ 76

[1] See Note 11 regarding shares repurchased.