Consolidated Statements of Changes in Equity and Redeemable Non-Controlling Interest - USD ($) shares in Thousands, $ in Millions	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income/(Loss)	Non- Controlling Interest in Consolidated Subsidiaries
Accounting standards update extensible enumeration	Accounting Standards Update 2016-13 [Member]
Common stock, shares beginning (in shares) at Dec. 31, 2019			607,000
Treasury stock, shares beginning (in shares) at Dec. 31, 2019				(53,000)
Beginning balance at Dec. 31, 2019	$ 17,286	$ (10)	$ 6	$ (3,879)	$ 11,742	$ 9,629	$ (10)	$ (243)	$ 31
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income	51							51
Stock consideration issued for acquisition (in shares)			18,000
Stock consideration issued for acquisition	$ 1,895				1,895
Exercise of common stock options (in shares)	723		1,000
Exercise of common stock options	$ 31				31
Repurchases of common stock (in shares)	(13,603)			(14,000)
Repurchases of common stock	$ (1,247)			$ (1,247)
Payments relating to treasury shares (in shares)	(1,000)			(1,000)
Payments relating to treasury shares	$ (74)			$ (74)
Stock-based compensation	141				141
Issuance under the employee stock purchase plan	33				33
Warrants issued to minority interest holders	3				3
Issuance of restricted stock (in shares)			2,000
Distributions of profits	(31)								(31)
Dividends paid to stockholders	(669)					(669)
Issuance of non-controlling interest	9								9
Net income/(loss) attributable to non-controlling interest	8					(19)			27
Net income	2,108					2,108
Common stock, shares ending (in shares) at Dec. 31, 2020			629,000
Treasury stock, shares ending (in shares) at Dec. 31, 2020				(68,000)
Ending balance at Dec. 31, 2020	19,534		$ 6	$ (5,200)	13,845	11,039		(192)	36
Redeemable non-controlling interest, Beginning balance at Dec. 31, 2019	78
Increase (Decrease) in Temporary Equity [Roll Forward]
Repurchases of common stock	11
Warrants issued to minority interest holders	2
Redeemable non-controlling interest	(10)
Net income attributable to non-controlling interest	(8)
Redeemable non-controlling interest, Ending balance at Dec. 31, 2020	93
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income	$ (4)							(4)
Exercise of common stock options (in shares)	493
Exercise of common stock options	$ 17				17
Repurchases of common stock (in shares)	(1,834)			(1,000)
Repurchases of common stock	$ (250)			$ (250)
Payments relating to treasury shares (in shares)	(1,000)			(1,000)
Payments relating to treasury shares	$ (70)			$ (70)
Stock-based compensation	168				168
Issuance under the employee stock purchase plan	42				42
Issuance of restricted stock (in shares)			2,000
Distributions of profits	(21)								(21)
Dividends paid to stockholders	(747)					(747)
Bakkt deconsolidation adjustment	(3)				(3)
Net income/(loss) attributable to non-controlling interest	13					(11)			24
Net income	$ 4,069					4,069
Common stock, shares ending (in shares) at Dec. 31, 2021	561,000		631,000
Treasury stock, shares ending (in shares) at Dec. 31, 2021				(70,000)
Ending balance at Dec. 31, 2021	$ 22,748		$ 6	$ (5,520)	14,069	14,350		(196)	39
Increase (Decrease) in Temporary Equity [Roll Forward]
Repurchases of common stock	27
Bakkt deconsolidation adjustment	(107)
Net income attributable to non-controlling interest	(13)
Redeemable non-controlling interest, Ending balance at Dec. 31, 2021	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income	$ (135)							(135)
Exercise of common stock options (in shares)	417
Exercise of common stock options	$ 22				22
Repurchases of common stock (in shares)	(4,955)			(4,000)
Repurchases of common stock	$ (632)			$ (632)
Payments relating to treasury shares (in shares)	(1,000)			(1,000)
Payments relating to treasury shares	$ (73)			$ (73)
Stock-based compensation	172				172
Issuance under the employee stock purchase plan (in shares)			1,000
Issuance under the employee stock purchase plan	50				50
Issuance of restricted stock (in shares)			2,000
Distributions of profits	(36)								(36)
Dividends paid to stockholders	(853)					(853)
Net income/(loss) attributable to non-controlling interest	0					(52)			52
Net income	$ 1,498
Common stock, shares ending (in shares) at Dec. 31, 2022	559,000		634,000
Treasury stock, shares ending (in shares) at Dec. 31, 2022				(75,000)
Ending balance at Dec. 31, 2022	$ 22,761		$ 6	$ (6,225)	$ 14,313	$ 14,943		$ (331)	$ 55
Increase (Decrease) in Temporary Equity [Roll Forward]
Repurchases of common stock	0
Net income attributable to non-controlling interest	0
Redeemable non-controlling interest, Ending balance at Dec. 31, 2022	$ 0