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Commitments and Contingent Liabilities - Maximum Potential Total of Future Payments Under Commitment Instruments (Details) $ in Thousands | Dec. 31, 2021 USD ($)
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Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | $ 289,249
Letters of Credit |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 184,161
Surety Bonds |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 105,088
Less Than 1 Year |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 286,161
Less Than 1 Year | Letters of Credit |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 184,161
Less Than 1 Year | Surety Bonds |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 102,000
1-3 Years |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 3,088
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 | 3,088
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 | 181,194
Firm Transportation | Less Than 1 Year | Letters of Credit |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 181,194
Firm Transportation | 1-3 Years | Letters of Credit |
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 | Beyond 5 Years | Letters of Credit |
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 | 2,967
Other | Surety Bonds |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 8,834
Other | Less Than 1 Year | Letters of Credit |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 2,967
Other | Less Than 1 Year | Surety Bonds |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 7,206
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 | 1,628
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 | 2,600
Employee-Related | Less Than 1 Year | Surety Bonds |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 2,600
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 | 11,984
Environmental | Less Than 1 Year | Surety Bonds |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 10,524
Environmental | 1-3 Years | Surety Bonds |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 1,460
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 | 81,670
Financial Guarantees | Less Than 1 Year | Surety Bonds |
Loss Contingencies [Line Items] |
Maximum potential total of future payments under commitments | 81,670
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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