Employee Benefit Plans (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) pension_plan investment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of significant plans | pension_plan	3
Pension benefit obligation (as a percent)	84.00%
Number of frozen plans | pension_plan	1
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Operating Income (Expense), Net
Number of investments | investment	7
Expected employer contributions | $	$ 1.3
Defined contribution plan, cost | $	$ 14.2	$ 13.7	$ 12.6
Number of union sponsored multiemployer plans | pension_plan	1
Withdrawal obligation | $	$ 19.0
Minimum | U.S. treasuries
Defined Benefit Plan Disclosure [Line Items]
Maturities (in years)	20 years
Maximum | U.S. treasuries
Defined Benefit Plan Disclosure [Line Items]
Maturities (in years)	30 years
Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Number of investments | investment	6
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Average rate used to determine discount rate	25.00%
Other Postretirement Benefits Plan | Bonds | Frozen Plans
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	60.00%
Other Postretirement Benefits Plan | Bonds | Active Plans
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	25.00%
Other Postretirement Benefits Plan | Equity securities | Frozen Plans
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	40.00%
Other Postretirement Benefits Plan | Equity securities | Active Plans
Defined Benefit Plan Disclosure [Line Items]
Target allocation (as a percent)	75.00%