Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended			24 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2023
Operating Activities:
Net income	$ 4,167	$ 2,893	$ 3,522
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	96	101	108
Amortization of intangibles	1,077	1,042	905
Provision for losses on accounts receivable	43	28	24
Deferred income taxes	(323)	(381)	(353)
Stock-based compensation	247	171	214
(Gain) loss on dispositions, net	(59)	70	(1,898)
Restructuring, lease impairment charges and other	206	246	319
Changes in operating assets and liabilities, net of effect of acquisitions and dispositions:
Accounts receivable	(79)	(291)	36
Prepaid and other current assets	(79)	(310)	(123)
Accounts payable and accrued expenses	245	328	43
Unearned revenue	222	352	37
Other current liabilities	(418)	(277)	(166)
Net change in prepaid/accrued income taxes	192	(175)	(135)
Net change in other assets and liabilities	152	(87)	70
Cash provided by operating activities	5,689	3,710	2,603
Investing Activities:
Capital expenditures	(124)	(143)	(89)
Acquisitions, net of cash acquired	(305)	(296)	210
Proceeds from dispositions	168	1,014	3,509
Changes in short-term investments	6	(13)	(2)
Cash (used for) provided by investing activities	(255)	562	3,628
Financing Activities:
Payments on short-term debt, net	0	(188)	(32)
Proceeds from issuance of senior notes, net	0	744	5,395
Payments on senior notes	(47)	0	(3,698)
Dividends paid to shareholders	(1,134)	(1,147)	(1,024)
Distributions to noncontrolling interest holders	(287)	(280)	(270)
Proceeds from noncontrolling interest holders	0	0	410
Repurchase of treasury shares	(3,301)	(3,301)	(12,004)
Contingent consideration payments	(107)	(9)	0
Employee withholding tax on share-based payments, excise tax payments on share repurchases and other	(122)	(99)	(103)
Cash used for financing activities	(4,998)	(4,280)	(11,326)
Effect of exchange rate changes on cash	(61)	12	(123)
Net change in cash, cash equivalents, and restricted cash	375	4	(5,218)
Cash, cash equivalents, and restricted cash at beginning of year	1,291	1,287	6,505	$ 1,287	$ 6,505
Cash, cash equivalents, and restricted cash at end of year	1,666	1,291	1,287	$ 1,666	$ 1,291
Cash paid during the year for:
Interest	391	369	240
Income taxes	$ 1,159	$ 1,279	$ 1,555