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Commitments and Contingencies - Narrative (Details) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 02, 2021 plaintiff | Sep. 30, 2023 USD ($) | Mar. 31, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |
Period of lease extension options |  | 15 years |  |  | 15 years |
Option to terminate lease, period |  |  |  |  | 1 year |
Lease impairment |  | $ 3 |  | $ 73 | $ 14 | $ 98
Revenue |  | $ 3,084 |  | 2,861 | $ 9,345 | 8,244
Basis Capital Investment Group, Investment Losses on Collateralized Debt Obligations |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of entities | plaintiff | 2 |  |  |  |  |
Amazon Web Services |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Collaborative arrangement, purchase obligation |  |  | $ 1,000 |  |  |
Collaborative arrangement, contractual period |  |  | 5 years |  |  |
CME Group |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Noncontrolling interest ownership by noncontrolling owners percentage |  | 27.00% |  |  | 27.00% |
S&P DJ Indices | CME Group |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Noncontrolling interest ownership by noncontrolling owners percentage |  | 27.00% |  |  | 27.00% |
S&P DJ Indices | Related Party |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Revenue |  | $ 43 |  | $ 42 | $ 132 | $ 130
Minimum |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Remaining lease terms |  | 1 year |  |  | 1 year |
Maximum |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Remaining lease terms |  | 10 years |  |  | 10 years |

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