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Summary of Significant Accounting Policies Summary of Significant Accounting Policies
 6 Months Ended
Jun. 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
 June 30, 2021December 31, 2020June 30, 2020December 31, 2019
Cash and cash equivalents$383.5 $16.0 $8.5 $187.4 
Restricted cash and cash equivalents477.4 380.2 382.7 330.3 
Total cash and cash equivalents and restricted cash and cash equivalents
$860.9 $396.2 $391.2 $517.7