Pension and Other Postretirement Benefits - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 1.0
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	6.6
Other Postretirement Benefit Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	0.1
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	$ 0.2