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Basis of Presentation Supplemental Cash Flow Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2022 | Sep. 30, 2022 | Sep. 30, 2021
Other Significant Noncash Transactions [Line Items] |  |  |
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability |  | $ 9 | $ 4
Title Group |  |  |
Other Significant Noncash Transactions [Line Items] |  |  |
Noncash or Part Noncash Acquisition, Investments Acquired | $ 90 |  |

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