Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Shares	Non-Controlling Interests
Balance, beginning of year at Dec. 31, 2015		$ 561	$ 861	$ 11,302	$ (4,220)	$ (1,991)	$ 89
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			14
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact in 2016			(63)			250
Other			0
Net income	$ 1,354			1,332			22
Dividend equivalents declared – (per share amounts: $1.43 in 2017 and $1.30 in 2016)				(5)
Dividends declared – (per share amounts: $1.43 in 2017 and $1.30 in 2016)				(676)
Other comprehensive income (loss), net of tax	(69)				(69)
Purchase of treasury shares						(625)
Deconsolidation of subsidiary							(14)
Distributions and other changes							(14)
Balance, end of period at Sep. 30, 2016	6,754		812	11,953	(4,289)	(2,366)	83
Balance, beginning of year at Dec. 31, 2016	6,272	$ 561	842	12,388	(5,093)	(2,506)	80
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			26
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact in 2016			(82)			255
Other			(3)
Net income	1,482			1,463			19
Dividend equivalents declared – (per share amounts: $1.43 in 2017 and $1.30 in 2016)				(4)
Dividends declared – (per share amounts: $1.43 in 2017 and $1.30 in 2016)				(734)
Other comprehensive income (loss), net of tax	533				533
Purchase of treasury shares						(600)
Deconsolidation of subsidiary							0
Distributions and other changes							(14)
Balance, end of period at Sep. 30, 2017	$ 7,131		$ 783	$ 13,113	$ (4,560)	$ (2,851)	$ 85