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 Mar. 31, 2022		633.0
Treasury stock, shares beginning (in shares) at Dec. 31, 2021			(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 income (loss)	(25)					(25)
Exercise of common stock options	15			15
Repurchases of common stock (in shares)			(3.0)
Repurchases of common stock	(475)		$ (475)
Payments relating to treasury shares (in shares)			(1.0)
Payments relating to treasury shares	(69)		$ (69)
Stock-based compensation	45			45
Issuance under the employee stock purchase plan	24			24
Issuance of restricted stock (in shares)		2.0
Distributions of profits	(13)						(13)
Dividends paid to stockholders	(214)				(214)
Net income/(loss) attributable to non-controlling interest	0				(10)		10
Net income	667				667
Common stock, shares ending (in shares) at Dec. 31, 2021		631.0
Treasury stock, shares ending (in shares) at Mar. 31, 2022			(74.0)
Ending balance at Mar. 31, 2022	$ 22,703	$ 6	$ (6,064)	14,153	14,793	(221)	36
Common stock, shares beginning (in shares) at Mar. 31, 2023	559.0	635.0
Treasury stock, shares beginning (in shares) at Dec. 31, 2022	(75.0)		(75.0)
Beginning balance at Dec. 31, 2022	$ 22,761	$ 6	$ (6,225)	14,313	14,943	(331)	55
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)	16					16
Exercise of common stock options	$ 10			10
Repurchases of common stock (in shares)	(3.7)
Repurchases of common stock	$ (475)
Payments relating to treasury shares (in shares)			(1.0)
Payments relating to treasury shares	(49)		$ (49)
Stock-based compensation	47			47
Issuance under the employee stock purchase plan	18			18
Issuance of restricted stock (in shares)		1.0
Distributions of profits	(30)						(30)
Dividends paid to stockholders	(236)				(236)
Net income/(loss) attributable to non-controlling interest	0				(19)		19
Net income	$ 674				674
Common stock, shares ending (in shares) at Dec. 31, 2022	559.0	634.0
Treasury stock, shares ending (in shares) at Mar. 31, 2023	(76.0)		(76.0)
Ending balance at Mar. 31, 2023	$ 23,211	$ 6	$ (6,274)	$ 14,388	$ 15,362	$ (315)	$ 44