Consolidated Statements Of Changes in Equity - USD ($) shares in Millions, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive (Loss) Income [Member]	Noncontrolling Interest [Member]
Balance (in shares), Beginning at Dec. 31, 2020				245.4
Total shareholders' equity, Beginning Balance at Dec. 31, 2020				$ 3	$ 9,244			$ 23,802	$ 150
Noncontrolling interests, Beginning Balance at Dec. 31, 2020										$ 0
Total equity, Beginning Balance at Dec. 31, 2020			$ 33,199
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shareholders' net income						$ 1,665
Net Income (Loss) Attributable to Noncontrolling Interest										2
Net income	$ 1,667
Shareholders' other comprehensive income (loss)									(345)
Other Comprehensive (Loss) Income, Attributable to Noncontrolling Interest										(2)
Other Comprehensive Income (Loss), Net of Tax	(347)
Noncontrolling interests adjustment	65									65
Repurchase and retirement of common stock, shares				(1.4)
Repurchase and retirement of common stock	(447)			$ (1)	(53)	(393)
Dividends and dividend equivalents	(281)					(281)
Issuance of common stock under employee stock plans, net of related tax benefits, Shares				0.9
Issuance of common stock under employee stock plans, net of related tax benefits	62				62
Balance (in shares), Ending at Mar. 31, 2021				244.9
Total shareholders' equity, Ending Balance at Mar. 31, 2021				$ 2	9,253	24,793			(195)
Noncontrolling interests, Ending Balance at Mar. 31, 2021										65
Total equity, Ending Balance at Mar. 31, 2021	33,918
Balance (in shares), Beginning at Dec. 31, 2020				245.4
Total shareholders' equity, Beginning Balance at Dec. 31, 2020				$ 3	9,244			23,802	150
Noncontrolling interests, Beginning Balance at Dec. 31, 2020										0
Total equity, Beginning Balance at Dec. 31, 2020			33,199
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shareholders' net income	4,967
Net Income (Loss) Attributable to Noncontrolling Interest	3
Net income	4,970
Other Comprehensive (Loss) Income, Attributable to Noncontrolling Interest	(1)
Other Comprehensive Income (Loss), Net of Tax	$ (254)
Repurchase and retirement of common stock, shares	(3.9)
Repurchase and retirement of common stock	$ (1,378)
Balance (in shares), Ending at Sep. 30, 2021				242.8
Total shareholders' equity, Ending Balance at Sep. 30, 2021	35,808			$ 2	9,138	26,700			(103)
Noncontrolling interests, Ending Balance at Sep. 30, 2021										71
Balance (in shares), Beginning at Mar. 31, 2021				244.9
Total shareholders' equity, Beginning Balance at Mar. 31, 2021				$ 2	9,253	24,793			(195)
Noncontrolling interests, Beginning Balance at Mar. 31, 2021										65
Total equity, Beginning Balance at Mar. 31, 2021	33,918
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shareholders' net income						1,793
Net Income (Loss) Attributable to Noncontrolling Interest										8
Net income	1,801
Shareholders' other comprehensive income (loss)									178
Other Comprehensive (Loss) Income, Attributable to Noncontrolling Interest										2
Other Comprehensive Income (Loss), Net of Tax	180
Noncontrolling interests adjustment	3									3
Repurchase and retirement of common stock, shares				(1.3)
Repurchase and retirement of common stock	(480)			$ 0	(47)	(433)
Dividends and dividend equivalents	(279)					(279)
Issuance of common stock under employee stock plans, net of related tax benefits, Shares				0.3
Issuance of common stock under employee stock plans, net of related tax benefits	119				119
Convertible debenture repurchases, conversions and tax adjustments	(216)				(216)
Balance (in shares), Ending at Jun. 30, 2021				243.9
Total shareholders' equity, Ending Balance at Jun. 30, 2021				$ 2	9,109	25,874			(17)
Noncontrolling interests, Ending Balance at Jun. 30, 2021										78
Total equity, Ending Balance at Jun. 30, 2021	35,046
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shareholders' net income	1,509					1,509
Net Income (Loss) Attributable to Noncontrolling Interest	(7)									(7)
Net income	1,502
Shareholders' other comprehensive income (loss)									(86)
Other Comprehensive (Loss) Income, Attributable to Noncontrolling Interest	(1)									(1)
Other Comprehensive Income (Loss), Net of Tax	(87)
Noncontrolling interests adjustment	1									1
Repurchase and retirement of common stock, shares				(1.2)
Repurchase and retirement of common stock	(451)			$ 0	(44)	(407)
Dividends and dividend equivalents	(276)					(276)
Issuance of common stock under employee stock plans, net of related tax benefits, Shares				0.1
Issuance of common stock under employee stock plans, net of related tax benefits	75				75
Convertible debenture repurchases, conversions and tax adjustments	(2)				(2)
Balance (in shares), Ending at Sep. 30, 2021				242.8
Total shareholders' equity, Ending Balance at Sep. 30, 2021	35,808			$ 2	9,138	26,700			(103)
Noncontrolling interests, Ending Balance at Sep. 30, 2021										71
Balance (in shares), Beginning at Dec. 31, 2021				241.8
Total shareholders' equity, Beginning Balance at Dec. 31, 2021	36,060			$ 2	9,148	27,088		27,065	(178)
Total shareholders' equity, Beginning Balance (Accounting Standards Update 2020-06 [Member]) at Dec. 31, 2021							$ (23)
Noncontrolling interests, Beginning Balance at Dec. 31, 2021	68									68
Total equity, Beginning Balance at Dec. 31, 2021	36,128		36,105
Total equity, Beginning Balance (Accounting Standards Update 2020-06 [Member]) at Dec. 31, 2021		$ (23)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shareholders' net income						1,805
Net Income (Loss) Attributable to Noncontrolling Interest										(10)
Net income	1,795
Shareholders' other comprehensive income (loss)									(1,058)
Other Comprehensive (Loss) Income, Attributable to Noncontrolling Interest										(5)
Other Comprehensive Income (Loss), Net of Tax	(1,063)
Noncontrolling interests adjustment	3									3
Repurchase and retirement of common stock, shares				(1.2)
Repurchase and retirement of common stock	(545)				(45)	(500)
Dividends and dividend equivalents	(312)					(312)
Issuance of common stock under employee stock plans, net of related tax benefits, Shares				0.5
Issuance of common stock under employee stock plans, net of related tax benefits	39				39
Convertible debenture repurchases, conversions and tax adjustments	9				9
Balance (in shares), Ending at Mar. 31, 2022				241.1
Total shareholders' equity, Ending Balance at Mar. 31, 2022				$ 2	9,151	28,058			(1,236)
Noncontrolling interests, Ending Balance at Mar. 31, 2022										56
Total equity, Ending Balance at Mar. 31, 2022	36,031
Balance (in shares), Beginning at Dec. 31, 2021				241.8
Total shareholders' equity, Beginning Balance at Dec. 31, 2021	36,060			$ 2	9,148	27,088		$ 27,065	(178)
Total shareholders' equity, Beginning Balance (Accounting Standards Update 2020-06 [Member]) at Dec. 31, 2021							$ (23)
Noncontrolling interests, Beginning Balance at Dec. 31, 2021	68									68
Total equity, Beginning Balance at Dec. 31, 2021	36,128		$ 36,105
Total equity, Beginning Balance (Accounting Standards Update 2020-06 [Member]) at Dec. 31, 2021		$ (23)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shareholders' net income	5,076
Net Income (Loss) Attributable to Noncontrolling Interest	(18)
Net income	5,058
Other Comprehensive (Loss) Income, Attributable to Noncontrolling Interest	(11)
Other Comprehensive Income (Loss), Net of Tax	$ (2,617)
Repurchase and retirement of common stock, shares	(3.7)
Repurchase and retirement of common stock	$ (1,748)
Balance (in shares), Ending at Sep. 30, 2022				239.0
Total shareholders' equity, Ending Balance at Sep. 30, 2022	35,991			$ 2	9,169	29,604			(2,784)
Noncontrolling interests, Ending Balance at Sep. 30, 2022	52									52
Total equity, Ending Balance at Sep. 30, 2022	36,043
Balance (in shares), Beginning at Mar. 31, 2022				241.1
Total shareholders' equity, Beginning Balance at Mar. 31, 2022				$ 2	9,151	28,058			(1,236)
Noncontrolling interests, Beginning Balance at Mar. 31, 2022										56
Total equity, Beginning Balance at Mar. 31, 2022	36,031
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shareholders' net income						1,653
Net Income (Loss) Attributable to Noncontrolling Interest										(3)
Net income	1,650
Shareholders' other comprehensive income (loss)									(913)
Other Comprehensive (Loss) Income, Attributable to Noncontrolling Interest										(3)
Other Comprehensive Income (Loss), Net of Tax	(916)
Noncontrolling interests adjustment	5									5
Repurchase and retirement of common stock, shares				(1.3)
Repurchase and retirement of common stock	(624)				(48)	(576)
Dividends and dividend equivalents	(310)					(310)
Issuance of common stock under employee stock plans, net of related tax benefits, Shares				0.2
Issuance of common stock under employee stock plans, net of related tax benefits	111				111
Convertible debenture repurchases, conversions and tax adjustments	(80)				(80)
Balance (in shares), Ending at Jun. 30, 2022				240.0
Total shareholders' equity, Ending Balance at Jun. 30, 2022				$ 2	9,134	28,825			(2,149)
Noncontrolling interests, Ending Balance at Jun. 30, 2022										55
Total equity, Ending Balance at Jun. 30, 2022	35,867
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shareholders' net income	1,618					1,618
Net Income (Loss) Attributable to Noncontrolling Interest	(5)									(5)
Net income	1,613
Shareholders' other comprehensive income (loss)									(635)
Other Comprehensive (Loss) Income, Attributable to Noncontrolling Interest	(3)									(3)
Other Comprehensive Income (Loss), Net of Tax	(638)
Noncontrolling interests adjustment	5
Noncontrolling interests adjustment										5
Repurchase and retirement of common stock, shares				(1.2)
Repurchase and retirement of common stock	(579)				(47)	(532)
Dividends and dividend equivalents	(307)					(307)
Issuance of common stock under employee stock plans, net of related tax benefits, Shares				0.2
Issuance of common stock under employee stock plans, net of related tax benefits	103				103
Convertible debenture repurchases, conversions and tax adjustments	(21)				(21)
Balance (in shares), Ending at Sep. 30, 2022				239.0
Total shareholders' equity, Ending Balance at Sep. 30, 2022	35,991			$ 2	$ 9,169	$ 29,604			$ (2,784)
Noncontrolling interests, Ending Balance at Sep. 30, 2022	52									$ 52
Total equity, Ending Balance at Sep. 30, 2022	$ 36,043