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Commitments and Contingent Liabilities - Maximum Potential Total of Future Payments Under Commitment Instruments (Details) $ in Thousands | Dec. 31, 2023 USD ($)
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Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | $ 265,121
Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 43,684
Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 221,437
Less Than 1 Year |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 265,121
Less Than 1 Year | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 43,684
Less Than 1 Year | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 221,437
1-3 Years |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
1-3 Years | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
1-3 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
3-5 Years |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
3-5 Years | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
3-5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Beyond 5 Years |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Beyond 5 Years | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Beyond 5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Firm Transportation | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 40,331
Firm Transportation | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 126,336
Firm Transportation | Less Than 1 Year | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 40,331
Firm Transportation | Less Than 1 Year | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 126,336
Firm Transportation | 1-3 Years | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Firm Transportation | 1-3 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Firm Transportation | 3-5 Years | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Firm Transportation | 3-5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Firm Transportation | Beyond 5 Years | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Firm Transportation | Beyond 5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Other | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 3,353
Other | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 8,682
Other | Less Than 1 Year | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 3,353
Other | Less Than 1 Year | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 8,682
Other | 1-3 Years | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Other | 1-3 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Other | 3-5 Years | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Other | 3-5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Other | Beyond 5 Years | Letters of Credit: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Other | Beyond 5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Employee-Related | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 2,250
Employee-Related | Less Than 1 Year | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 2,250
Employee-Related | 1-3 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Employee-Related | 3-5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Employee-Related | Beyond 5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Environmental | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 11,449
Environmental | Less Than 1 Year | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 11,449
Environmental | 1-3 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Environmental | 3-5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Environmental | Beyond 5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Financial Guarantees | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 72,720
Financial Guarantees | Less Than 1 Year | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 72,720
Financial Guarantees | 1-3 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Financial Guarantees | 3-5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 0
Financial Guarantees | Beyond 5 Years | Surety Bonds: |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | $ 0

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