CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Millions		Total	Common Stock	Additional Paid-in Capital	Unearned Compensation	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)		Noncontrolling Interests
Changes in Shareholders' Equity [Roll Forward]
Accumulated other comprehensive loss, cumulative translation losses		$ 3,155
Accumulated other comprehensive income (loss), unrecognized retirement plan and other retiree benefit costs		1,038
Beginning balance at Dec. 31, 2018			$ 1,466	$ 2,204	$ (3)	$ (21,196)	$ 21,615	$ (4,188)	[1]	$ 299
Changes in Shareholders' Equity [Roll Forward]
Net income		1,845					1,724			121
Other comprehensive income (loss), net of tax		(33)						(27)	[1]	(6)
Dividends	[2]						(1,473)			(36)
Stock-based compensation expense				83
Shares issued for stock options				207		290
Shares issued for restricted stock units				(28)		28
Treasury stock acquired						(1,024)
Noncontrolling interests assumed through acquisition										120
Other					2	2	(6)
Ending balance at Sep. 30, 2019			1,466	2,466	(1)	(21,900)	21,860	(4,215)	[1],[3]	498
Changes in Shareholders' Equity [Roll Forward]
Accumulated other comprehensive loss, cumulative translation losses		3,104
Accumulated other comprehensive income (loss), unrecognized retirement plan and other retiree benefit costs		1,013
Beginning balance at Jun. 30, 2019			1,466	2,338	(3)	(21,682)	21,653	(4,119)	[3]	337
Changes in Shareholders' Equity [Roll Forward]
Net income		627					578			49
Other comprehensive income (loss), net of tax		(102)						(96)	[3]	(6)
Dividends							(370)			(2)
Stock-based compensation expense				49
Shares issued for stock options				93		128
Shares issued for restricted stock units				(14)		14
Treasury stock acquired						(360)
Noncontrolling interests assumed through acquisition										120
Other					2		(1)
Ending balance at Sep. 30, 2019			1,466	2,466	(1)	(21,900)	21,860	(4,215)	[1],[3]	498
Changes in Shareholders' Equity [Roll Forward]
Accumulated other comprehensive loss, cumulative translation losses		3,209
Accumulated other comprehensive income (loss), unrecognized retirement plan and other retiree benefit costs		1,008
Accumulated other comprehensive loss, cumulative translation losses		3,128
Accumulated other comprehensive income (loss), unrecognized retirement plan and other retiree benefit costs		1,138
Beginning balance at Dec. 31, 2019		558	1,466	2,488	(2)	(22,063)	22,501	(4,273)	[1]	441
Changes in Shareholders' Equity [Roll Forward]
Net income		2,168					2,048			120
Other comprehensive income (loss), net of tax		(148)						(147)	[1]	(1)
Dividends	[2]						(1,503)			(37)
Stock-based compensation expense				85
Shares issued for stock options				290		329
Shares issued for restricted stock units				(30)		30
Treasury stock acquired						(578)
Noncontrolling interests assumed through acquisition										(99)
Other				4	1	2	6	(1)	[1]	(4)
Ending balance at Sep. 30, 2020		1,073	1,466	2,837	(1)	(22,280)	23,052	(4,421)	[1],[3]	420
Changes in Shareholders' Equity [Roll Forward]
Accumulated other comprehensive loss, cumulative translation losses		3,402
Accumulated other comprehensive income (loss), unrecognized retirement plan and other retiree benefit costs		1,108
Beginning balance at Jun. 30, 2020			1,466	2,666	(1)	(22,075)	22,731	(4,519)	[3]	464
Changes in Shareholders' Equity [Roll Forward]
Net income		745					698			47
Other comprehensive income (loss), net of tax		112						100	[3]	12
Dividends							(379)
Stock-based compensation expense				53
Shares issued for stock options				130		132
Shares issued for restricted stock units				(13)		13
Treasury stock acquired						(350)
Noncontrolling interests assumed through acquisition										(99)
Other				1			2	(2)	[3]	(4)
Ending balance at Sep. 30, 2020		1,073	$ 1,466	$ 2,837	$ (1)	$ (22,280)	$ 23,052	$ (4,421)	[1],[3]	$ 420
Changes in Shareholders' Equity [Roll Forward]
Accumulated other comprehensive loss, cumulative translation losses		3,357
Accumulated other comprehensive income (loss), unrecognized retirement plan and other retiree benefit costs		$ 1,054

[1] Accumulated other comprehensive income (loss) includes cumulative translation losses of $3,357 at September 30, 2020 ($3,209 at September 30, 2019) and $3,128 at December 31, 2019 ($3,155 at December 31, 2018), respectively, and unrecognized retirement plan and other retiree benefits costs of $1,054 at September 30, 2020 ($1,008 at September 30, 2019) and $1,138 at December 31, 2019 ($1,038 at December 31, 2018), respectively.

[2] Two dividends were declared in each of the first quarters of 2020 and 2019

[3] Accumulated other comprehensive income (loss) includes cumulative translation losses of $3,357 at September 30, 2020 ($3,209 at September 30, 2019) and $3,402 at June 30, 2020 ($3,104 at June 30, 2019), respectively, and unrecognized retirement plan and other retiree benefits costs of $1,054 at September 30, 2020 ($1,008 at September 30, 2019) and $1,108 at June 30, 2020 ($1,013 at June 30, 2019), respectively.