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Summary Of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
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 December 31,
| 2020 |  | 2019 |  | 2018
Cash and cash equivalents | $ | 16.0 |  |  | $ | 187.4 |  |  | $ | 25.7 |
Restricted cash and cash equivalents | 380.2 |  |  | 330.3 |  |  | 303.6 |
Total cash and cash equivalents and restricted cash and cash equivalents | $ | 396.2 |  |  | $ | 517.7 |  |  | $ | 329.3 |

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