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Acquisitions and Divestitures - Divestitures Narrative (Details) - USD ($) |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
May 02, 2023 | Jun. 30, 2022 | Feb. 28, 2022 | Mar. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  | $ 59,000,000 | $ (70,000,000) | $ 1,898,000,000 |
Sale |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  | 59,000,000 |  |  |
Sale | Engineering Solutions Business |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  |  | (120,000,000) |  |
Gain (loss) on disposition after tax |  |  |  |  |  | (182,000,000) |  |
Divestiture consideration | $ 975,000,000 |  |  |  |  |  |  |
Proceeds from divestiture of business | $ 750,000,000 |  |  |  |  |  |  |
Disposition related costs |  |  |  |  |  | 16,000,000 |  |
Release of deferred tax liabilities |  |  |  |  |  | 157,000,000 |  |
Sale | Leveraged Commentary and Data |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  |  |  | 505,000,000 |
Gain (loss) on disposition after tax |  |  |  |  |  |  | 378,000,000 |
Sale | Leveraged Commentary and Data | Market Intelligence |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  |  | 46,000,000 |  |
Gain (loss) on disposition after tax |  |  |  |  |  | 34,000,000 |  |
Contingent payment due following closing, period |  |  |  | 6 months |  |  |  |
Sale | Leveraged Commentary and Data | Indices |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  |  | 4,000,000 |  |
Gain (loss) on disposition after tax |  |  |  |  |  | 3,000,000 |  |
Sale | Leveraged Commentary and Data And Leveraged Loan Indices |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  |  | $ (70,000,000) | 1,900,000,000 |
Divestiture consideration |  | $ 600,000,000 |  |  |  |  |  |
Contingent payment |  | $ 50,000,000 |  |  |  |  |  |
Contingent consideration, maximum period until achieved consideration is payable |  | 6 months |  |  |  |  |  |
Sale | Leveraged Loan Indices |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  |  |  | 52,000,000 |
Gain (loss) on disposition after tax |  |  |  |  |  |  | 43,000,000 |
Sale | Base Chemicals |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  | $ 0 |  |  |  |  |  |
Divestiture consideration |  | $ 295,000,000 |  |  |  |  |  |
Sale | CUSIP Global Services |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  |  |  | 1,342,000,000 |
Gain (loss) on disposition after tax |  |  |  |  |  |  | $ 1,005,000,000.000 |
Divestiture consideration |  |  |  |  |  |  |  | $ 1,925,000,000
Sale | OPIS |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  | $ 0 |  |  |  |  |
Divestiture consideration |  |  | $ 1,150,000,000 |  |  |  |  |
Sale | PrimeOne |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  | 38,000,000 |  |  |
Gain (loss) on disposition after tax |  |  |  |  | 27,000,000 |  |  |
Sale | Fincentric |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Gain (loss) on dispositions |  |  |  |  | 21,000,000 |  |  |
Gain (loss) on disposition after tax |  |  |  |  | $ 12,000,000 |  |  |

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