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Restructuring - Schedule of Initial Restructuring Charge Recorded and the Ending Reserve Balance (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
2024 Restructuring Plan |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | $ 35 |
Ending Reserve Balance | 28 |
2024 Restructuring Plan | Operating Segments | Market Intelligence |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 31 |
Ending Reserve Balance | 24 |
2024 Restructuring Plan | Operating Segments | Ratings |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 1 |
Ending Reserve Balance | 1 |
2024 Restructuring Plan | Operating Segments | Commodity Insights |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 0 |
Ending Reserve Balance | 0 |
2024 Restructuring Plan | Operating Segments | Mobility |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 0 |
Ending Reserve Balance | 0 |
2024 Restructuring Plan | Operating Segments | Indices |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 1 |
Ending Reserve Balance | 1 |
2024 Restructuring Plan | Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 2 |
Ending Reserve Balance | 2 |
2023 Restructuring Plan |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 183 |
Ending Reserve Balance | 83 | $ 152
2023 Restructuring Plan | Operating Segments | Market Intelligence |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 90 |
Ending Reserve Balance | 41 |
2023 Restructuring Plan | Operating Segments | Ratings |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 10 |
Ending Reserve Balance | 5 |
2023 Restructuring Plan | Operating Segments | Commodity Insights |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 26 |
Ending Reserve Balance | 12 |
2023 Restructuring Plan | Operating Segments | Mobility |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 9 |
Ending Reserve Balance | 5 |
2023 Restructuring Plan | Operating Segments | Indices |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 5 |
Ending Reserve Balance | 2 |
2023 Restructuring Plan | Corporate |  |
Restructuring Cost and Reserve [Line Items] |  |
Initial Charge Recorded | 43 |
Ending Reserve Balance | $ 18 |

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