Employee Benefit Plans (Net Accrued Benefit Costs Classification on Balance Sheet) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent assets	$ 118.3	$ 117.2
Current liabilities	(14.6)	(14.6)
Noncurrent liabilities	(415.6)	(682.8)
Net accrued benefit costs	(311.9)	(580.2)
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent assets	0.0	0.0
Current liabilities	(15.4)	(16.1)
Noncurrent liabilities	(122.1)	(172.3)
Net accrued benefit costs	$ (137.5)	$ (188.4)