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Acquisitions and Divestitures - Schedule of Key Components of Assets and Liabilities Held for Sale (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Pre-tax gain (loss) on dispositions	$ 59	$ (70)	$ 1,898
Held for sale or disposed
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Operating (loss) profit	(1)	22	82
Sale
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Pre-tax gain (loss) on dispositions	59
Sale | PrimeOne
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Pre-tax gain (loss) on dispositions	38
Sale | Fincentric
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Pre-tax gain (loss) on dispositions	$ 21
Sale | Engineering Solutions Business
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Pre-tax gain (loss) on dispositions		$ (120)
Sale | Leveraged Commentary and Data
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Pre-tax gain (loss) on dispositions			505
Sale | Leveraged Loan Indices
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Pre-tax gain (loss) on dispositions			52
Sale | CUSIP Global Services
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Pre-tax gain (loss) on dispositions			$ 1,342

X

- Definition

Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5B
-Subparagraph (b)
-Publisher FASB
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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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