Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

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,
	2023		2022		2021
Cash and cash equivalents	$	13.2	$	7.7	$	23.3
Restricted cash and cash equivalents	457.7		410.0		410.9
Total cash and cash equivalents and restricted cash and cash equivalents	$	470.9	$	417.7	$	434.2