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, 2017		$ 13,766	$ 5,593	$ (17,005)	$ 26,301	$ (1,192)	$ 69
Adjustments to adopt new accounting guidance | Revenue recognition		(12)	0	0	(12)	0	0
Adjustments to adopt new accounting guidance | Tax accounting for intra-entity asset transfers		(35)	0	0	(35)	0	0
Adjustments to adopt new accounting guidance | Recognition and measurement of financial assets and liabilities		0	0	0	11	(11)	0
Balance at Jan. 01, 2018		13,719	5,593	(17,005)	26,265	(1,203)	69
Balance at Dec. 31, 2017		13,766	5,593	(17,005)	26,301	(1,192)	69
Increase (Decrease) in Shareholders' Equity
Profit of consolidated and affiliated companies		3,372	0	0	3,372	0	0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		(227)	0	0	0	(227)	0
Pension and other postretirement benefits, net of tax		(16)	0	0	0	(16)	0
Derivative financial instruments, net of tax		(37)	0	0	0	(37)	0
Available-for-sale securities, net of tax		(13)	0	0	0	(13)	0
Change in Ownership for Noncontrolling Interests		3	(2)	0	0	0	5
Dividends declared	[1]	(980)	0	0	(980)	0	0
Distribution to noncontrolling interests		(1)	0	0	0	0	(1)
Common shares issued from treasury stock for stock-based compensation: three months: 1,302,208 in 2018 and 644,039 in 2019; six months: 4,729,038 in 2018 and 2,503,104 in 2019		256	29	227	0	0	0
Stock-based compensation expense, before tax (in dollars)		112	112	0	0	0	0
Common shares repurchased: three months: 4,881,793 in 2018 and 9,757,126 in 2019; six months: 8,029,422 in 2018 and15,456,651 in 2019	[2]	(1,250)	0	(1,250)	0	0	0
Other		10	10	0	0	0	0
Balance at Jun. 30, 2018		$ 14,942	5,746	(18,028)	28,657	(1,496)	63
Increase (Decrease) in Shareholders' Equity
Dividends declared		$ 1.64
Balance at Mar. 31, 2018		$ 15,272	5,640	(17,347)	27,929	(1,016)	66
Increase (Decrease) in Shareholders' Equity
Profit of consolidated and affiliated companies		1,705	0	0	1,707	0	(2)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		(411)	0	0	0	(411)	0
Pension and other postretirement benefits, net of tax		(7)	0	0	0	(7)	0
Derivative financial instruments, net of tax		(60)	0	0	0	(60)	0
Available-for-sale securities, net of tax		(2)	0	0	0	(2)	0
Dividends declared	[3]	(979)	0	0	(979)	0	0
Distribution to noncontrolling interests		(1)	0	0	0	0	(1)
Common shares issued from treasury stock for stock-based compensation: three months: 1,302,208 in 2018 and 644,039 in 2019; six months: 4,729,038 in 2018 and 2,503,104 in 2019		107	38	69	0	0	0
Stock-based compensation expense, before tax (in dollars)		62	62	0	0	0	0
Common shares repurchased: three months: 4,881,793 in 2018 and 9,757,126 in 2019; six months: 8,029,422 in 2018 and15,456,651 in 2019	[2]	(750)	0	(750)	0	0	0
Other		6	6	0	0	0	0
Balance at Jun. 30, 2018		$ 14,942	5,746	(18,028)	28,657	(1,496)	63
Increase (Decrease) in Shareholders' Equity
Dividends declared		$ 1.64
Balance at Dec. 31, 2018		$ 14,080	5,827	(20,531)	30,427	(1,684)	41
Adjustments to adopt new accounting guidance | Accounting Standards Update 2016-02	[4]	235	0	0	235	0	0
Adjustments to adopt new accounting guidance | Accounting Standards Update 2018-02 [Member]	[4]	0	0	0	(108)	108	0
Balance at Jan. 01, 2019		14,315	5,827	(20,531)	30,554	(1,576)	41
Balance at Dec. 31, 2018		14,080	5,827	(20,531)	30,427	(1,684)	41
Increase (Decrease) in Shareholders' Equity
Profit of consolidated and affiliated companies		3,503	0	0	3,501	0	2
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		77	0	0	0	77	0
Pension and other postretirement benefits, net of tax		(14)	0	0	0	(14)	0
Derivative financial instruments, net of tax		(16)	0	0	0	(16)	0
Available-for-sale securities, net of tax		30	0	0	0	30	0
Dividends declared	[1]	(1,074)	0	0	(1,074)	0	0
Distribution to noncontrolling interests		(2)	0	0	0	0	(2)
Common shares issued from treasury stock for stock-based compensation: three months: 1,302,208 in 2018 and 644,039 in 2019; six months: 4,729,038 in 2018 and 2,503,104 in 2019		39	(62)	101	0	0	0
Stock-based compensation expense, before tax (in dollars)		113	113	0	0	0	0
Common shares repurchased: three months: 4,881,793 in 2018 and 9,757,126 in 2019; six months: 8,029,422 in 2018 and15,456,651 in 2019	[2]	(2,037)	0	(2,037)	0	0	0
Other		(56)	(56)	0	0	0	0
Balance at Jun. 30, 2019		$ 14,878	5,822	(22,467)	32,981	(1,499)	41
Increase (Decrease) in Shareholders' Equity
Dividends declared		$ 1.89
Balance at Mar. 31, 2019		$ 15,478	5,804	(21,214)	32,435	(1,588)	41
Increase (Decrease) in Shareholders' Equity
Profit of consolidated and affiliated companies		1,619	0	0	1,620	0	(1)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax		99	0	0	0	99	0
Pension and other postretirement benefits, net of tax		(7)	0	0	0	(7)	0
Derivative financial instruments, net of tax		(17)	0	0	0	(17)	0
Available-for-sale securities, net of tax		14	0	0	0	14	0
Dividends declared	[3]	(1,074)	0	0	(1,074)	0	0
Distribution to noncontrolling interests		(1)	0	0	0	0	(1)
Common shares issued from treasury stock for stock-based compensation: three months: 1,302,208 in 2018 and 644,039 in 2019; six months: 4,729,038 in 2018 and 2,503,104 in 2019		44	11	33	0	0	0
Stock-based compensation expense, before tax (in dollars)		68	68	0	0	0	0
Common shares repurchased: three months: 4,881,793 in 2018 and 9,757,126 in 2019; six months: 8,029,422 in 2018 and15,456,651 in 2019	[2]	(1,286)	0	(1,286)	0	0	0
Other		(59)	(61)	0	0	0	2
Balance at Jun. 30, 2019		$ 14,878	$ 5,822	$ (22,467)	$ 32,981	$ (1,499)	$ 41
Increase (Decrease) in Shareholders' Equity
Dividends declared		$ 1.89

[1] Dividends per share of common stock of $1.89 and $1.64 were declared in the six months ended June 30, 2019 and 2018, respectively.

[2] See Note 12 for additional information.

[3] Dividends per share of common stock of $1.89 and $1.64 were declared in the three months ended June 30, 2019 and 2018, respectively.

[4] See Note 2 for additional information.