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Summary of Significant Accounting Policies Summary of Significant Accounting Policies | 9 Months Ended
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Sep. 30, 2021
Accounting Policies [Abstract] |
Schedule of Cash and Cash Equivalents [Table Text Block] | The following table provides a reconciliation of cash and cash equivalents and restricted cash and cash equivalents reported in our consolidated balance sheets to the total shown in our consolidated statements of cash flows:
(In millions) | As of
| September 30, 2021 |  | December 31, 2020 |  | September 30, 2020 |  | December 31, 2019
Cash and cash equivalents | $ | 13.3 |  |  | $ | 16.0 |  |  | $ | 8.9 |  |  | $ | 187.4 |
Restricted cash and cash equivalents | 429.0 |  |  | 380.2 |  |  | 391.9 |  |  | 330.3 |
Total cash and cash equivalents and restricted cash and cash equivalents | $ | 442.3 |  |  | $ | 396.2 |  |  | $ | 400.8 |  |  | $ | 517.7 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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