Goodwill and Other Intangible Assets - Schedule of Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 14,754	$ 10,045
Accumulated Amortization	(3,995)	(3,461)
Total finite-lived intangible assets, net	10,759	6,584
Total indefinite-lived intangible assets	6,558	6,506
Total other intangible assets, gross	21,312	16,551
Total intangible assets, net	17,317	13,090	$ 13,736
Exchange registrations, licenses and contracts with indefinite lives
Finite-Lived Intangible Assets [Line Items]
Total indefinite-lived intangible assets	6,223	6,218
Trademarks/tradenames
Finite-Lived Intangible Assets [Line Items]
Total indefinite-lived intangible assets	280	280
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Total indefinite-lived intangible assets	47	0
Other
Finite-Lived Intangible Assets [Line Items]
Total indefinite-lived intangible assets	8	8
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	10,870	7,966
Accumulated Amortization	(2,641)	(2,280)
Total finite-lived intangible assets, net	8,229	5,686
Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,497	1,380
Accumulated Amortization	(934)	(761)
Total finite-lived intangible assets, net	1,563	619
Trading products with finite lives
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	205	242
Accumulated Amortization	(141)	(172)
Total finite-lived intangible assets, net	64	70
Data and Databases
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	745	150
Accumulated Amortization	(170)	(146)
Total finite-lived intangible assets, net	575	4
Trademarks/Tradenames
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	386	229
Accumulated Amortization	(67)	(47)
Total finite-lived intangible assets, net	319	182
Other
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	51	78
Accumulated Amortization	(42)	(55)
Total finite-lived intangible assets, net	$ 9	$ 23