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, 2017		$ 561	$ 784	$ 13,140	$ (4,043)	$ (3,083)	$ 83
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			20
Issuance of shares under stock compensation plans and employee stock purchase plans			(33)			171
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2014-09				364
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2016-01					(14)
Net income attributable to the Company	$ 1,511			1,497			14
Dividend equivalents declared				(5)
Dividends declared				(800)
Other comprehensive loss, net of tax	(431)				(431)
Purchase of treasury shares						(675)
Net non-controlling interests (disposed) acquired							0
Distributions and other changes							(12)
Balance, end of period at Sep. 30, 2018	$ 7,538		771	14,196	(4,488)	(3,587)	85
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share (in dollars per share)	$ 1.580
Balance, beginning of year at Jun. 30, 2018		561	732	14,131	(4,265)	(3,443)	81
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			46
Issuance of shares under stock compensation plans and employee stock purchase plans			(7)			31
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2014-09				0
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2016-01					0
Net income attributable to the Company	$ 279			276			3
Dividend equivalents declared				(2)
Dividends declared				(209)
Other comprehensive loss, net of tax	(223)				(223)
Purchase of treasury shares						(175)
Net non-controlling interests (disposed) acquired							0
Distributions and other changes							1
Balance, end of period at Sep. 30, 2018	$ 7,538		771	14,196	(4,488)	(3,587)	85
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share (in dollars per share)	$ 0.415
Balance, beginning of year at Dec. 31, 2018	$ 7,584	561	817	14,347	(4,647)	(3,567)	73
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			65
Issuance of shares under stock compensation plans and employee stock purchase plans			(5)			29
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2014-09				0
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2016-01					0
Net income attributable to the Company	1,377			1,351			3
Dividend equivalents declared				(2)
Dividends declared				(231)
Other comprehensive loss, net of tax	(284)				(284)
Purchase of treasury shares						(200)
Net non-controlling interests (disposed) acquired							(100)
Distributions and other changes							2
Balance, end of period at Sep. 30, 2019	$ 7,797		796	14,811	(4,931)	(3,617)	177
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share (in dollars per share)	$ 1.740
Balance, beginning of year at Jun. 30, 2019		$ 561	736	14,741	(4,527)	(3,446)	272
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			23
Issuance of shares under stock compensation plans and employee stock purchase plans			(44)			250
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2014-09				0
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2016-01					0
Net income attributable to the Company	$ 306			303			26
Dividend equivalents declared				(6)
Dividends declared				(881)
Other comprehensive loss, net of tax	(404)				(404)
Purchase of treasury shares						(300)
Net non-controlling interests (disposed) acquired							95
Distributions and other changes							(17)
Balance, end of period at Sep. 30, 2019	$ 7,797		$ 796	$ 14,811	$ (4,931)	$ (3,617)	$ 177
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per share (in dollars per share)	$ 0.455