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 List]	Accounting Standards Update 2016-13 [Member]
Beginning balance (in shares) at Dec. 31, 2018			604,000	35,000
Beginning balance at Dec. 31, 2018	$ 17,231.0		$ 6.0	$ (2,354.0)	$ 11,547.0	$ 8,317.0		$ (315.0)	$ 30.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income	$ 72.0							72.0
Exercise of common stock options (in shares)	598		1,000
Exercise of common stock options	$ 23.0				23.0
Repurchases of common stock (in shares)	(17,432)			(17,000)
Repurchases of common stock	$ (1,460.0)			$ (1,460.0)
Payments relating to treasury shares (in shares)	(1,000)			(1,000)
Payments relating to treasury shares	$ (65.0)			$ (65.0)
Stock-based compensation	(143.0)				(143.0)
Issuance under the employee stock purchase plan	29.0				29.0
Issuance of restricted stock (in shares)			2,000
Distributions of profits	(29.0)								(29.0)
Dividends paid to stockholders	(621.0)					(621.0)
Net income attributable to non-controlling interest	3.0					(27.0)			30.0
Net income	1,960.0					1,960.0
Ending balance (in shares) at Dec. 31, 2019			607,000	53,000
Ending balance at Dec. 31, 2019	17,286.0	$ (10.0)	$ 6.0	$ (3,879.0)	11,742.0	9,629.0	$ (10.0)	(243.0)	31.0
Redeemable non-controlling interest, Beginning balance at Dec. 31, 2018	71.0
Increase (Decrease) in Temporary Equity [Roll Forward]
Repurchases of common stock	11.0
Net income attributable to non-controlling interest	(4.0)
Redeemable non-controlling interest, Ending balance at Dec. 31, 2019	$ 78.0
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13 [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income	$ 51.0							51.0
Stock consideration issued for acquisition (in shares)			18,000
Stock consideration issued for acquisition	$ 1,895.0				1,895.0
Exercise of common stock options (in shares)	723		1,000
Exercise of common stock options	$ 31.0				31.0
Repurchases of common stock (in shares)	(13,603)			(14,000)
Repurchases of common stock	$ (1,247.0)			$ (1,247.0)
Payments relating to treasury shares (in shares)	(1,000)			(1,000)
Payments relating to treasury shares	$ 74.0			$ (74.0)
Stock-based compensation	(141.0)				(141.0)
Issuance under the employee stock purchase plan (in shares)			1,000
Issuance under the employee stock purchase plan	33.0				33.0
Warrants issued to minority interest holders	3.0				3.0
Issuance of restricted stock (in shares)			2,000
Distributions of profits	(31.0)								(31.0)
Dividends paid to stockholders	(669.0)					(669.0)
Issuance of non-controlling interest	9.0								9.0
Net income attributable to non-controlling interest	8.0					(19.0)			27.0
Net income	$ 2,108.0					2,108.0
Ending balance (in shares) at Dec. 31, 2020	629,000		629,000	68,000
Ending balance at Dec. 31, 2020	$ 19,534.0		$ 6.0	$ (5,200.0)	13,845.0	11,039.0		(192.0)	36.0
Increase (Decrease) in Temporary Equity [Roll Forward]
Repurchases of common stock	11.0
Warrants issued to minority interest holders	2.0
Redeemable non-controlling interest	10.0
Net income attributable to non-controlling interest	(8.0)
Redeemable non-controlling interest, Ending balance at Dec. 31, 2020	93.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income	$ (4.0)							(4.0)
Exercise of common stock options (in shares)	493		0
Exercise of common stock options	$ 17.0				17.0
Repurchases of common stock (in shares)	(1,834)			(1,000)
Repurchases of common stock	$ (250.0)			$ (250.0)
Payments relating to treasury shares (in shares)	(1,000)			(1,000)
Payments relating to treasury shares	$ (70.0)			$ (70.0)
Stock-based compensation	(168.0)				(168.0)
Issuance under the employee stock purchase plan	42.0				42.0
Issuance of restricted stock (in shares)			2,000
Distributions of profits	(21.0)								(21.0)
Dividends paid to stockholders	(747.0)					(747.0)
Bakkt deconsolidation adjustment	(3.0)				(3.0)
Net income attributable to non-controlling interest	13.0					(11.0)			24.0
Net income	$ 4,069.0					4,069.0
Ending balance (in shares) at Dec. 31, 2021	631,000		631,000	70,000
Ending balance at Dec. 31, 2021	$ 22,748.0		$ 6.0	$ (5,520.0)	$ 14,069.0	$ 14,350.0		$ (196.0)	$ 39.0
Increase (Decrease) in Temporary Equity [Roll Forward]
Repurchases of common stock	27.0
Bakkt deconsolidation adjustment	(107.0)
Net income attributable to non-controlling interest	(13.0)
Redeemable non-controlling interest, Ending balance at Dec. 31, 2021	$ 0.0