Income Taxes (Deferred Tax Assets (Liabilities) Resulting From Temporary Differences) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Tax loss and deduction carryforwards	$ 478.5	$ 425.0
Intangibles	187.6	218.5
Tax credit carryforwards	120.3	119.7
Interest carryforwards	93.6	76.3
All other future deductions	168.4	199.8
Valuation allowance	(941.4)	(815.4)
Total deferred tax assets	107.0	223.9
Deferred tax liabilities:
Deferred tax liabilities	(59.2)	(105.0)
Net deferred tax assets	$ 47.8	$ 118.9