Goodwill and Other Intangible Assets - Schedule of Goodwill Rollforward (Details) $ in Millions	3 Months Ended
Mar. 31, 2025 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 30,595
Acquisition	8
Foreign currency translation	14
Goodwill, ending balance	30,617
Exchanges Segment
Goodwill [Roll Forward]
Goodwill, beginning balance	8,136
Acquisition	0
Foreign currency translation	13
Goodwill, ending balance	8,149
Fixed Income and Data Services Segment
Goodwill [Roll Forward]
Goodwill, beginning balance	4,853
Acquisition	8
Foreign currency translation	1
Goodwill, ending balance	4,862
Mortgage Technology Segment
Goodwill [Roll Forward]
Goodwill, beginning balance	17,606
Acquisition	0
Foreign currency translation	0
Goodwill, ending balance	$ 17,606

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details