Schedule 2 - Parent Company Financial Statements - Right of Use Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]
Operating Lease Right-of-Use Assets	$ 68.6	$ 75.6
Present Value of Minimum Lease Payments	89.6	93.2
Parent Company
Condensed Financial Statements, Captions [Line Items]
Operating Lease Right-of-Use Assets	13.4	18.6
Present Value of Minimum Lease Payments	$ 26.9	$ 31.3