Statement of Consolidated Cash Flows (Schedule of Balance Sheet Reconciliation) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Cash and Cash Equivalents, at Carrying Value	$ 102.2	$ 2,245.4
Restricted Cash	38.3	35.7
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 140.5	$ 2,281.1	$ 148.3	$ 75.4