Employee Benefit Plans (Estimated Future Benefit Payments) (Details) $ in Millions	Dec. 31, 2021 USD ($)
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2019	$ 101.8
2020	97.1
2021	103.0
2022	100.7
2023	104.3
Thereafter	528.5
Total	1,035.4
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2019	16.1
2020	16.5
2021	16.9
2022	16.8
2023	16.6
Thereafter	73.0
Total	$ 155.9