Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Ordinary Shares and Additional Paid-in Capital	Ordinary Shares and Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjusted Balance	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings (Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive Loss, Net of Tax	Accumulated Other Comprehensive Loss, Net of Tax Cumulative Effect, Period of Adoption, Adjusted Balance	Non-controlling Interests	Non-controlling Interests Cumulative Effect, Period of Adoption, Adjustment	Non-controlling Interests Cumulative Effect, Period of Adoption, Adjusted Balance
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	1,573					1,532					41
Shares issued — employee stock compensation plans (in shares)				2.5
Shares issued — employee stock compensation plans	(131)			$ (130)		(1)
Shares purchased (in shares)				(10.5)
Shares purchased	(1,960)					(1,960)
Share-based compensation expense	317			$ 317
Dividends to shareholders	(410)					(410)
Net change in fair value of financial instruments	3								3
Net foreign currency translation adjustments	14								14
Net postretirement benefit obligation	(141)								(141)
Dividends paid to noncontrolling interests on subsidiary common stock	$ (35)										(35)
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2016-13 [Member]
Ending Balance (in shares) at Dec. 31, 2019				232.1	232.1
Ending Balance at Dec. 31, 2019	$ 3,449	$ (6)	$ 3,443	$ 6,154	$ 6,154	1,254	$ (6)	$ 1,248	(4,033)	$ (4,033)	74	$ 0	$ 74
Increase (Decrease) in Shareholders' Equity
Net income	2,018					1,969					49
Shares issued — employee stock compensation plans (in shares)				1.9
Shares issued — employee stock compensation plans	(154)			$ (154)
Shares purchased (in shares)				(8.5)
Shares purchased	(1,763)					(1,763)
Share-based compensation expense	317			$ 317
Dividends to shareholders	(412)					(412)
Net change in fair value of financial instruments	13								13
Net foreign currency translation adjustments	263								260		3
Net postretirement benefit obligation	(101)								(101)
Dividends paid to noncontrolling interests on subsidiary common stock	(32)										(32)
Net purchases of shares from noncontrolling interests	$ (9)			$ (3)							(6)
Ending Balance (in shares) at Dec. 31, 2020	225.5			225.5
Ending Balance at Dec. 31, 2020	$ 3,583			$ 6,314		1,042			(3,861)		88
Increase (Decrease) in Shareholders' Equity
Net income	1,308					1,255					53
Shares issued — employee stock compensation plans (in shares)				1.7
Shares issued — employee stock compensation plans	(130)			$ (129)		(1)
Shares purchased (in shares)				(12.4)
Shares purchased	(3,543)					(3,543)
Share-based compensation expense	449			$ 449
Dividends to shareholders	(447)					(447)
Net change in fair value of financial instruments	1								1
Net foreign currency translation adjustments	(289)								(288)		(1)
Net postretirement benefit obligation	277								277
Dividends paid to noncontrolling interests on subsidiary common stock	(38)										(38)
Net purchases of shares from noncontrolling interests	$ (13)			$ (8)							(5)
Ending Balance (in shares) at Dec. 31, 2021	214.8			214.8
Ending Balance at Dec. 31, 2021	$ 1,158			$ 6,626		$ (1,694)			$ (3,871)		$ 97