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Acquisitions and Divestitures - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Business Acquisition [Line Items] |  |
Pre-tax gain (loss) on sale | $ 0 | $ 50
Disposal Group, Disposed of by Sale, Not Discontinued Operations | LCD |  |
Business Acquisition [Line Items] |  |
Pre-tax gain (loss) on sale |  | 50
Disposal Group, Disposed of by Sale, Not Discontinued Operations | LCD | Market Intelligence |  |
Business Acquisition [Line Items] |  |
Pre-tax gain (loss) on sale |  | 46
Gain (loss) on disposition after tax |  | 34
Disposal Group, Disposed of by Sale, Not Discontinued Operations | LCD | Indices |  |
Business Acquisition [Line Items] |  |
Pre-tax gain (loss) on sale |  | 4
Gain (loss) on disposition after tax |  | $ 3

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