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Operations and Significant Accounting Policies - Leases (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Lessee, Lease, Description [Line Items] |  |
Operating Lease Cost | $ 5.0 | $ 6.3
Finance Lease Cost | 0.1 | 0.0
Operating Cash Flows From Operating Leases | 5.0 | 6.3
Financing Cash Flows From Finance Leases | $ 0.2 | $ 0.0
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other Non-Current Assets | Other Non-Current Assets
Operating Lease Other Non-Current Assets | $ 10.7 | $ 12.7
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other Non-Current Assets | Other Non-Current Assets
Finance Lease Other Non-Current Assets | $ 2.1 | $ 0.0
Total Lease Right-of-use Assets | $ 12.8 | $ 12.7
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Other | Other
Operating Lease Liabilities | $ 3.0 | $ 3.2
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Other | Other
Finance Lease Liabilities | $ 0.4 | $ 0.0
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other Non-Current Liabilities | Other Non-Current Liabilities
Operating Lease Liabilities | $ 7.7 | $ 9.3
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other Non-Current Liabilities | Other Non-Current Liabilities
Finance Lease Liabilities | $ 1.6 | $ 0.0
Total Lease Liabilities | 12.7 | 12.5
Finance Lease Amortization Expense | 0.1 | 0.0
Total Operating and Finance Lease Expenses | $ 5.1 | $ 6.3
Vehicles and Equipment |  |
Weighted Average Remaining Lease Term (Years): |  |
Operating Leases | 3 years | 4 years
Finance Leases | 5 years | 0 years
Weighted Average Discount Rate: |  |
Operating Lease | 4.00% | 3.90%
Finance Lease | 5.40% | 0.00%
Land and Other |  |
Weighted Average Remaining Lease Term (Years): |  |
Operating Leases | 12 years | 16 years
Weighted Average Discount Rate: |  |
Operating Lease | 5.00% | 3.90%

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