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Commitments and Contingent Liabilities - Amount of Commitment Expiration Per Period (Details) $ in Thousands | Sep. 30, 2020 USD ($)
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Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | $ 291,169
Less Than 1 Year |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 232,513
1-3 Years |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 58,656
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 | 178,352
Letters of Credit | Other |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 6,950
Letters of Credit | Loss Contingencies by Secondary Nature of Contingency |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 185,302
Letters of Credit | Less Than 1 Year | Firm Transportation |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 178,352
Letters of Credit | Less Than 1 Year | Other |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 6,950
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 | 185,302
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 | 9,285
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 | 12,312
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 | 105,867
Surety Bond | Less Than 1 Year | Other |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 8,594
Surety Bond | Less Than 1 Year | Employee-Related |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 1,500
Surety Bond | Less Than 1 Year | Environmental |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 10,717
Surety Bond | Less Than 1 Year | Financial Guarantees |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 26,400
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 | 47,211
Surety Bond | 1-3 Years | Other |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 691
Surety Bond | 1-3 Years | Employee-Related |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 1,100
Surety Bond | 1-3 Years | Environmental |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 1,595
Surety Bond | 1-3 Years | Financial Guarantees |
Schedule of Costs Related to Purchase Obligations [Line Items] |
Guarantor obligations, maximum exposure | 55,270
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 | 58,656
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

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- Definition Schedule of Costs Related to Purchase Obligations [Line Items] + References No definition available. + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248 + Details
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