Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Ordinary Shares and Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss, Net of Tax	Non- controlling Interests	Cumulative Effect, Period Of Adoption, Adjustment	Cumulative Effect, Period Of Adoption, Adjustment Retained Earnings	Cumulative Effect, Period Of Adoption, Adjusted Balance	Cumulative Effect, Period Of Adoption, Adjusted Balance Ordinary Shares and Additional Paid-in Capital	Cumulative Effect, Period Of Adoption, Adjusted Balance Retained Earnings	Cumulative Effect, Period Of Adoption, Adjusted Balance Accumulated Other Comprehensive Loss, Net of Tax	Cumulative Effect, Period Of Adoption, Adjusted Balance Non- controlling Interests
Beginning Balance (in shares) at Dec. 31, 2018		240.1
Beginning Balance at Dec. 31, 2018	$ 4,219	$ 5,967	$ 2,093	$ (3,909)	$ 68
Increase (Decrease) in Shareholders' Equity
Net income	676		659		17
Shares issued - employee stock compensation plans (in shares)		1.4
Shares issued - employee stock compensation plans	(96)	$ (96)
Shares purchased (in shares)		(0.6)
Shares purchased	(101)		(101)
Share-based compensation expense	89	$ 89
Dividends to shareholders	(96)		(96)
Net change in fair value of financial instruments	7			7
Net foreign currency translation adjustments	133			131	2
Net postretirement benefit obligation	31			31
Ending Balance (in shares) at Mar. 31, 2019		240.9
Ending Balance at Mar. 31, 2019	4,862	$ 5,960	2,555	(3,740)	87
Beginning Balance (in shares) at Dec. 31, 2018		240.1
Beginning Balance at Dec. 31, 2018	4,219	$ 5,967	2,093	(3,909)	68
Increase (Decrease) in Shareholders' Equity
Net income	1,191
Net change in fair value of financial instruments	(3)
Net foreign currency translation adjustments	(182)
Net postretirement benefit obligation	62
Ending Balance (in shares) at Sep. 30, 2019		234.1
Ending Balance at Sep. 30, 2019	3,561	$ 6,086	1,436	(4,030)	69
Beginning Balance (in shares) at Mar. 31, 2019		240.9
Beginning Balance at Mar. 31, 2019	4,862	$ 5,960	2,555	(3,740)	87
Increase (Decrease) in Shareholders' Equity
Net income	287		277		10
Shares issued - employee stock compensation plans (in shares)		0.6
Shares issued - employee stock compensation plans	(47)	$ (47)
Shares purchased (in shares)		(5.8)
Shares purchased	(1,056)		(1,056)
Share-based compensation expense	91	$ 91
Dividends to shareholders	(107)		(107)
Net change in fair value of financial instruments	(8)			(8)
Net foreign currency translation adjustments	(103)			(103)
Net postretirement benefit obligation	14			14
Dividends paid to noncontrolling interests on subsidiary common stock	(20)				(20)
Ending Balance (in shares) at Jun. 30, 2019		235.7
Ending Balance at Jun. 30, 2019	3,913	$ 6,004	1,669	(3,837)	77
Increase (Decrease) in Shareholders' Equity
Net income	228		222		6
Shares issued - employee stock compensation plans (in shares)		0.2
Shares issued - employee stock compensation plans	9	$ 10	(1)
Shares purchased (in shares)		(1.8)
Shares purchased	(350)		(350)
Share-based compensation expense	72	$ 72
Dividends to shareholders	(104)		(104)
Net change in fair value of financial instruments	(2)			(2)
Net foreign currency translation adjustments	(212)			(208)	(4)
Net postretirement benefit obligation	17			17
Purchases of subsidiary shares from noncontrolling interests	0
Dividends paid to noncontrolling interests on subsidiary common stock	(10)				(10)
Ending Balance (in shares) at Sep. 30, 2019		234.1
Ending Balance at Sep. 30, 2019	$ 3,561	$ 6,086	1,436	(4,030)	69
Beginning Balance (in shares) at Dec. 31, 2019	232.1	232.1
Beginning Balance at Dec. 31, 2019	$ 3,449	$ 6,154	1,254	(4,033)	74	$ (6)	$ (6)	$ 3,443	$ 6,154	$ 1,248	$ (4,033)	$ 74
Increase (Decrease) in Shareholders' Equity
Net income	791		772		19
Shares issued - employee stock compensation plans (in shares)		1.2
Shares issued - employee stock compensation plans	(112)	$ (112)
Shares purchased (in shares)		(2.2)
Shares purchased	(463)		(463)
Share-based compensation expense	81	$ 81
Dividends to shareholders	(102)		(102)
Net change in fair value of financial instruments	(5)			(5)
Net foreign currency translation adjustments	(397)			(395)	(2)
Net postretirement benefit obligation	24			24
Ending Balance (in shares) at Mar. 31, 2020		231.1
Ending Balance at Mar. 31, 2020	$ 3,260	$ 6,123	1,455	(4,409)	91
Beginning Balance (in shares) at Dec. 31, 2019	232.1	232.1
Beginning Balance at Dec. 31, 2019	$ 3,449	$ 6,154	1,254	(4,033)	74	$ (6)	$ (6)	$ 3,443	$ 6,154	$ 1,248	$ (4,033)	$ 74
Increase (Decrease) in Shareholders' Equity
Net income	1,484
Net change in fair value of financial instruments	4
Net foreign currency translation adjustments	(136)
Net postretirement benefit obligation	$ 67
Ending Balance (in shares) at Sep. 30, 2020	229.2	229.2
Ending Balance at Sep. 30, 2020	$ 3,620	$ 6,218	1,423	(4,099)	78
Beginning Balance (in shares) at Mar. 31, 2020		231.1
Beginning Balance at Mar. 31, 2020	3,260	$ 6,123	1,455	(4,409)	91
Increase (Decrease) in Shareholders' Equity
Net income	411		398		13
Shares issued - employee stock compensation plans (in shares)		0.4
Shares issued - employee stock compensation plans	(45)	$ (45)
Share-based compensation expense	64	64
Dividends to shareholders	(102)		(102)
Net change in fair value of financial instruments	3			3
Net foreign currency translation adjustments	88			87	1
Net postretirement benefit obligation	23			23
Purchases of subsidiary shares from noncontrolling interests	0	$ 4			(4)
Dividends paid to noncontrolling interests on subsidiary common stock	(7)				(7)
Ending Balance (in shares) at Jun. 30, 2020		231.5
Ending Balance at Jun. 30, 2020	3,695	$ 6,146	1,751	(4,296)	94
Increase (Decrease) in Shareholders' Equity
Net income	282		275		7
Shares issued - employee stock compensation plans (in shares)		0.1
Shares issued - employee stock compensation plans	12	$ 12
Shares purchased (in shares)		(2.4)
Shares purchased	(500)		(500)
Share-based compensation expense	67	$ 67
Dividends to shareholders	(103)		(103)
Net change in fair value of financial instruments	6			6
Net foreign currency translation adjustments	173			171	2
Net postretirement benefit obligation	20			20
Purchases of subsidiary shares from noncontrolling interests	(9)	$ (7)			(2)
Dividends paid to noncontrolling interests on subsidiary common stock	$ (23)				(23)
Ending Balance (in shares) at Sep. 30, 2020	229.2	229.2
Ending Balance at Sep. 30, 2020	$ 3,620	$ 6,218	$ 1,423	$ (4,099)	$ 78