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			(75)
Issuance of shares under stock compensation plans and employee stock purchase plans			(27)			123
Cumulative effect of adoption of new accounting standards				0
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	$ 696			690			6
Dividend equivalents declared – (per share amounts: $0.83 in 2019 and $0.75 in 2018)				(1)
Dividends declared – (per share amounts: $0.83 in 2019 and $0.75 in 2018)				(381)
Other comprehensive income, net of tax	152				152
Purchase of treasury shares						(250)
Distributions and other changes							(8)
Balance, end of period at Mar. 31, 2018	8,021	561	682	13,812	(3,905)	(3,210)	81
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			(101)
Issuance of shares under stock compensation plans and employee stock purchase plans			(35)			182
Cumulative effect of adoption of new accounting standards				0
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	727			716			11
Dividend equivalents declared – (per share amounts: $0.83 in 2019 and $0.75 in 2018)				(2)
Dividends declared – (per share amounts: $0.83 in 2019 and $0.75 in 2018)				(419)
Other comprehensive income, net of tax	57				57
Purchase of treasury shares						0
Distributions and other changes							(7)
Balance, end of period at Mar. 31, 2019	$ 7,986	$ 561	$ 681	$ 14,642	$ (4,590)	$ (3,385)	$ 77