Consolidated Statements of Changes in Equity and Redeemable Non-Controlling Interest - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Non- Controlling Interest in Consolidated Subsidiaries
Common stock, shares beginning (in shares) at Sep. 30, 2021		631.0
Treasury stock, shares beginning (in shares) at Dec. 31, 2020			(68.0)
Beginning balance at Dec. 31, 2020	$ 19,534	$ 6	$ (5,200)	$ 13,845	$ 11,039	$ (192)	$ 36
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive (loss) income	(14)					(14)
Exercise of common stock options	10			10
Payments relating to treasury shares (in shares)			(1.0)
Payments relating to treasury shares	(69)		$ (69)
Stock-based compensation	122			122
Issuance under the employee stock purchase plan	42			42
Issuance of restricted stock (in shares)		2.0
Distributions of profits	(21)						(21)
Dividends paid to stockholders	(561)				(561)
Net income/(loss) attributable to non-controlling interest	9				(9)		18
Net income/(loss)	2,540				2,540
Common stock, shares ending (in shares) at Dec. 31, 2020		629.0
Treasury stock, shares ending (in shares) at Sep. 30, 2021			(69.0)
Ending balance at Sep. 30, 2021	21,592	$ 6	$ (5,269)	14,019	13,009	(206)	33
Redeemable non-controlling interest, beginning balance at Dec. 31, 2020	93
Increase (Decrease) in Temporary Equity [Roll Forward]
Stock-based compensation	3
Net income/(loss) attributable to non-controlling interest	(9)
Redeemable non-controlling interest, ending balance at Sep. 30, 2021	87
Common stock, shares beginning (in shares) at Sep. 30, 2021		631.0
Treasury stock, shares beginning (in shares) at Jun. 30, 2021			(68.0)
Beginning balance at Jun. 30, 2021	21,116	$ 6	$ (5,267)	13,952	12,563	(174)	36
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive (loss) income	(32)					(32)
Exercise of common stock options	2			2
Payments relating to treasury shares (in shares)			(1.0)
Payments relating to treasury shares	(2)		$ (2)
Stock-based compensation	41			41
Issuance under the employee stock purchase plan	24			24
Distributions of profits	(10)						(10)
Dividends paid to stockholders	(187)				(187)
Net income/(loss) attributable to non-controlling interest	3				(4)		7
Net income/(loss)	637				637
Common stock, shares ending (in shares) at Jun. 30, 2021		631.0
Treasury stock, shares ending (in shares) at Sep. 30, 2021			(69.0)
Ending balance at Sep. 30, 2021	21,592	$ 6	$ (5,269)	14,019	13,009	(206)	33
Redeemable non-controlling interest, beginning balance at Jun. 30, 2021	89
Increase (Decrease) in Temporary Equity [Roll Forward]
Stock-based compensation	1
Net income/(loss) attributable to non-controlling interest	(3)
Redeemable non-controlling interest, ending balance at Sep. 30, 2021	$ 87
Common stock, shares beginning (in shares) at Sep. 30, 2022	559.0	634.0
Treasury stock, shares beginning (in shares) at Dec. 31, 2021	(70.0)		(70.0)
Beginning balance at Dec. 31, 2021	$ 22,748	$ 6	$ (5,520)	14,069	14,350	(196)	39
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive (loss) income	(207)					(207)
Exercise of common stock options	22			22
Repurchases of common stock	$ (632)		$ (632)
Repurchases of common stock (in shares)	(5.0)		(4.0)
Payments relating to treasury shares (in shares)			(1.0)
Payments relating to treasury shares	$ (72)		$ (72)
Stock-based compensation	129			129
Issuance under the employee stock purchase plan (in shares)		1.0
Issuance under the employee stock purchase plan	49			49
Issuance of restricted stock (in shares)		2.0
Distributions of profits	(35)						(35)
Dividends paid to stockholders	(640)				(640)
Net income/(loss) attributable to non-controlling interest	0				(37)		37
Net income/(loss)	$ 1,058				1,058
Common stock, shares ending (in shares) at Dec. 31, 2021	561.0	631.0
Treasury stock, shares ending (in shares) at Sep. 30, 2022	(75.0)		(75.0)
Ending balance at Sep. 30, 2022	$ 22,420	$ 6	$ (6,224)	14,269	14,731	(403)	41
Common stock, shares beginning (in shares) at Sep. 30, 2022	559.0	634.0
Treasury stock, shares beginning (in shares) at Jun. 30, 2022			(75.0)
Beginning balance at Jun. 30, 2022	$ 22,861	$ 6	$ (6,223)	14,201	15,135	(305)	47
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive (loss) income	(98)					(98)
Exercise of common stock options	2			2
Payments relating to treasury shares	(1)		$ (1)
Stock-based compensation	41			41
Issuance under the employee stock purchase plan (in shares)		1.0
Issuance under the employee stock purchase plan	25			25
Distributions of profits	(22)						(22)
Dividends paid to stockholders	(213)				(213)
Net income/(loss) attributable to non-controlling interest	0				(16)		16
Net income/(loss)	$ (175)				(175)
Common stock, shares ending (in shares) at Jun. 30, 2022		633.0
Treasury stock, shares ending (in shares) at Sep. 30, 2022	(75.0)		(75.0)
Ending balance at Sep. 30, 2022	$ 22,420	$ 6	$ (6,224)	$ 14,269	$ 14,731	$ (403)	$ 41