Commitments and Contingent Liabilities - Amount of Commitment Expiration Per Period (Details) $ in Thousands | Mar. 31, 2021USD ($) |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | $ 294,098 |
Less Than 1 Year | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 289,922 |
1-3 Years | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 4,176 |
3-5 Years | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Beyond 5 Years | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Letters of Credit | Firm Transportation | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 181,576 |
Letters of Credit | Other | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 7,021 |
Letters of Credit | Loss Contingencies by Secondary Nature of Contingency | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 188,597 |
Letters of Credit | Less Than 1 Year | Firm Transportation | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 181,576 |
Letters of Credit | Less Than 1 Year | Other | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 7,021 |
Letters of Credit | Less Than 1 Year | Loss Contingencies by Secondary Nature of Contingency | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 188,597 |
Letters of Credit | 1-3 Years | Firm Transportation | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Letters of Credit | 1-3 Years | Other | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Letters of Credit | 1-3 Years | Loss Contingencies by Secondary Nature of Contingency | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Letters of Credit | 3-5 Years | Firm Transportation | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Letters of Credit | 3-5 Years | Other | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Letters of Credit | 3-5 Years | Loss Contingencies by Secondary Nature of Contingency | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Letters of Credit | Beyond 5 Years | Firm Transportation | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Letters of Credit | Beyond 5 Years | Other | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Letters of Credit | Beyond 5 Years | Loss Contingencies by Secondary Nature of Contingency | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | Other | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 9,224 |
Surety Bond | Employee-Related | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 2,600 |
Surety Bond | Environmental | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 12,007 |
Surety Bond | Financial Guarantees | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 81,670 |
Surety Bond | Loss Contingencies by Secondary Nature of Contingency | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 105,501 |
Surety Bond | Less Than 1 Year | Other | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 6,703 |
Surety Bond | Less Than 1 Year | Employee-Related | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 2,600 |
Surety Bond | Less Than 1 Year | Environmental | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 10,352 |
Surety Bond | Less Than 1 Year | Financial Guarantees | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 81,670 |
Surety Bond | Less Than 1 Year | Loss Contingencies by Secondary Nature of Contingency | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 101,325 |
Surety Bond | 1-3 Years | Other | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 2,521 |
Surety Bond | 1-3 Years | Employee-Related | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | 1-3 Years | Environmental | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 1,655 |
Surety Bond | 1-3 Years | Financial Guarantees | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | 1-3 Years | Loss Contingencies by Secondary Nature of Contingency | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 4,176 |
Surety Bond | 3-5 Years | Other | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | 3-5 Years | Employee-Related | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | 3-5 Years | Environmental | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | 3-5 Years | Financial Guarantees | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | 3-5 Years | Loss Contingencies by Secondary Nature of Contingency | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | Beyond 5 Years | Other | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | Beyond 5 Years | Employee-Related | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | Beyond 5 Years | Environmental | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | Beyond 5 Years | Financial Guarantees | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | 0 |
Surety Bond | Beyond 5 Years | Loss Contingencies by Secondary Nature of Contingency | |
Schedule of Costs Related to Purchase Obligations [Line Items] | |
Guarantor obligations, maximum exposure | $ 0 |