Goodwill and Other Intangible Assets - Schedule of Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	$ 14,808	$ 14,754
Accumulated Amortization	(4,999)	(3,995)
Total finite-lived intangible assets, net	9,809	10,759
Total indefinite-lived intangible assets	6,497	6,558
Total other intangible assets, gross	21,305	21,312
Total other intangible assets	16,306	17,317	$ 13,090
Exchange registrations, licenses and contracts with indefinite lives
Finite-Lived Intangible Assets [Line Items]
Total indefinite-lived intangible assets	6,209	6,223
Trademarks and Trade names
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	0	47
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	10,874	10,870
Accumulated Amortization	(3,299)	(2,641)
Total finite-lived intangible assets, net	7,575	8,229
Technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,549	2,497
Accumulated Amortization	(1,191)	(934)
Total finite-lived intangible assets, net	1,358	1,563
Trading products with finite lives
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	202	205
Accumulated Amortization	(149)	(141)
Total finite-lived intangible assets, net	53	64
Data and Databases
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	746	745
Accumulated Amortization	(230)	(170)
Total finite-lived intangible assets, net	516	575
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	386	386
Accumulated Amortization	(87)	(67)
Total finite-lived intangible assets, net	299	319
Other
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	51	51
Accumulated Amortization	(43)	(42)
Total finite-lived intangible assets, net	$ 8	$ 9