Consolidated Statement of Changes in Equity - USD ($) $ in Millions	Common Stock and Additional Paid-in Capital	Retained Earnings	Treasury Stock	Total Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest	Total
Balance at the beginning of the period at Dec. 31, 2016	$ 5,070	$ 37,907	$ (25,434)	$ (7,245)	$ 45	$ 10,343
Increase (decrease) in equity
Net income		4,858			11	4,869
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment				370	3	373
Defined benefit pension and postretirement plans adjustment				52		52
Cash flow hedging instruments - unrealized gain (loss)				(203)		(203)
Total other comprehensive income (loss), net of tax						222
Dividends declared		(2,803)				(2,803)
Stock-based compensation	291					291
Reacquired stock			(2,044)			(2,044)
Issuances pursuant to stock option and benefit plans		(847)	1,591			744
Balance at the end of the period at Dec. 31, 2017	5,361	39,115	(25,887)	(7,026)	59	11,622
Increase (decrease) in equity
Net income		5,349			14	5,363
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment				(461)	(6)	(467)
Defined benefit pension and postretirement plans adjustment				444		444
Cash flow hedging instruments - unrealized gain (loss)				176		176
Total other comprehensive income (loss), net of tax						153
Dividends declared		(3,193)				(3,193)
Transfer of ownership involving non-wholly owned subsidiaries		14		1	(15)
Stock-based compensation	291					291
Reacquired stock			(4,888)			(4,888)
Issuances pursuant to stock option and benefit plans		(649)	1,149			500
Balance at the end of the period at Dec. 31, 2018	5,652	40,636	(29,626)	(6,866)	52	9,848
Increase (decrease) in equity
Net income		4,570			12	4,582
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment				212	(1)	211
Defined benefit pension and postretirement plans adjustment				(560)		(560)
Cash flow hedging instruments - unrealized gain (loss)				(72)		(72)
Total other comprehensive income (loss), net of tax						(421)
Dividends declared		(3,316)				(3,316)
Stock-based compensation	264					264
Reacquired stock			(1,381)			(1,381)
Issuances pursuant to stock option and benefit plans		(622)	1,158			536
Balance at the end of the period at Dec. 31, 2019	$ 5,916	42,135	$ (29,849)	(8,139)	$ 63	10,126
Increase (decrease) in equity
Impact of ASUs | ASU 2018-02 Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income		853		$ (853)
Impact of ASUs | ASU 2016-02 Leases		$ 14				$ 14