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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, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disposal Group, Including Discontinued Operation, Assets [Abstract] |  |  |
Total assets | $ 1,298 | $ 321 |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] |  |  |
Pre-tax gain (loss) on dispositions | 1,898 | 11 | $ 16
CGS and LCD |  |  |
Disposal Group, Including Discontinued Operation, Liabilities [Abstract] |  |  |
Deferred tax liability |  | 0 |
Held for sale | CGS and LCD |  |  |
Disposal Group, Including Discontinued Operation, Assets [Abstract] |  |  |
Accounts Receivable, net | 88 | 59 |
Goodwill | 437 | 255 |
Other intangible assets, net | 697 | 0 |
Other assets | 76 | 7 |
Total assets | 1,298 | 321 |
Disposal Group, Including Discontinued Operation, Liabilities [Abstract] |  |  |
Accounts payable and accrued expenses | 59 | 11 |
Deferred tax liability | 27 |  |
Unearned revenue | 148 | 138 |
Liabilities of businesses held for sale | 234 | 149 |
Held for sale or disposed |  |  |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] |  |  |
Operating profit | 71 | 172 | 162
Sale |  |  |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] |  |  |
Pre-tax gain (loss) on dispositions | 1,900 | 11 | 16
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 |  |
Sale | SPIAS |  |  |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] |  |  |
Pre-tax gain (loss) on dispositions |  | $ 3 | 1
Sale | IR webhosting business |  |  |
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] |  |  |
Pre-tax gain (loss) on dispositions |  |  | $ 11

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