Goodwill and Other Intangible Assets - Schedule of Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 19,285	$ 1,400
Acquisitions	104	18,637
Dispositions		(5)
Reclassifications		(733)
Other	35	(14)
Ending balance	19,424	19,285	$ 1,400
Finite-lived Intangible Assets, Accumulated Amortization [Roll Forward]
Accumulated amortization, beginning balance	1,825	961
Current year amortization	1,042	905	96
Reclassifications	0	(35)
Other	5	(6)
Accumulated amortization, ending balance	2,872	1,825	961
Net definite-lived intangibles	16,552	17,460
Databases and software
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	3,941	645
Acquisitions	0	3,774
Dispositions		0
Reclassifications		(476)
Other	1	(2)
Ending balance	3,942	3,941	645
Finite-lived Intangible Assets, Accumulated Amortization [Roll Forward]
Accumulated amortization, beginning balance	765	467
Current year amortization	351	313
Reclassifications	0	(13)
Other	0	(2)
Accumulated amortization, ending balance	1,116	765	467
Net definite-lived intangibles	2,826	3,176
Content
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	139	139
Acquisitions	0	0
Dispositions		0
Reclassifications		0
Other	0	0
Ending balance	139	139	139
Finite-lived Intangible Assets, Accumulated Amortization [Roll Forward]
Accumulated amortization, beginning balance	139	139
Current year amortization	0	0
Reclassifications	0	0
Other	0	0
Accumulated amortization, ending balance	139	139	139
Net definite-lived intangibles	0	0
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	13,467	355
Acquisitions	0	13,377
Dispositions		0
Reclassifications		(257)
Other	23	(8)
Ending balance	13,490	13,467	355
Finite-lived Intangible Assets, Accumulated Amortization [Roll Forward]
Accumulated amortization, beginning balance	656	196
Current year amortization	545	482
Reclassifications	(2)	(22)
Other	(1)	0
Accumulated amortization, ending balance	1,198	656	196
Net definite-lived intangibles	12,292	12,811
Tradenames
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	1,524	55
Acquisitions	0	1,469
Dispositions		0
Reclassifications		0
Other	4	0
Ending balance	1,528	1,524	55
Finite-lived Intangible Assets, Accumulated Amortization [Roll Forward]
Accumulated amortization, beginning balance	142	52
Current year amortization	111	91
Reclassifications	2	0
Other	1	(1)
Accumulated amortization, ending balance	256	142	52
Net definite-lived intangibles	1,272	1,382
Other intangibles
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	214	206
Acquisitions	104	17
Dispositions		(5)
Reclassifications		0
Other	7	(4)
Ending balance	325	214	206
Finite-lived Intangible Assets, Accumulated Amortization [Roll Forward]
Accumulated amortization, beginning balance	123	107
Current year amortization	35	19
Reclassifications	0	0
Other	5	(3)
Accumulated amortization, ending balance	163	123	$ 107
Net definite-lived intangibles	$ 162	$ 91