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Financial Instruments Financial Instruments - Financing Receivables, allowance for credit losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020 | Jan. 01, 2020
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Direct Financing Lease, Net Investment in Lease, Allowance for Credit Loss | $ 35,400 | $ 34,613 | $ 11,520 | $ 11,055 | $ 35,400 | $ 11,520 | $ 30,177 | $ 11,155
Total credit loss provision | 103,736 | 102,270 | 62,017 | 62,180 | 103,736 | 62,017 | 91,920 | 53,300
Net Investment in Lease, Allowance for Credit Loss |  |  | (423) |  |  |  |  |
Direct Financing Lease, Net Investment in Lease, Credit Loss Expense (Reversal) | 787 | 4,436 | 465 | (100) | 5,200 | 400 |  |
Total credit loss expense (reversal) | 1,466 | 10,350 | (163) | 8,880 |  |  |  |
LNG Segment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Direct Financing Lease, Net Investment in Lease, Credit Loss Expense (Reversal) | 800 |  | 500 |  |  |  |  |
Financial Guarantee [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Off-Balance Sheet, Credit Loss, Liability | 2,000 | 2,298 | 1,851 | 2,139 | 2,000 | 1,851 | 2,080 | 2,139
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | (298) | 218 | (288) | 0 |  |  |  |
Loans Receivable [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Loans to equity-accounted joint ventures | 4,000 | 3,745 | 3,797 | 3,714 | 4,000 | 3,797 | 4,726 | 3,714
Financing Receivable, Credit Loss, Expense (Reversal) | 255 | (981) | 83 | 0 |  |  |  |
Equity Method Investments [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |  |  |
Net Investment in Lease, Allowance for Credit Loss | 62,336 | 61,614 | 44,849 | 45,272 | 62,336 | 44,849 | $ 54,937 | $ 36,292
Net Investment in Lease, Allowance for Credit Loss | $ 722 | $ 6,677 | $ (400) | $ 8,980 | $ 7,400 | $ 8,600 |  |

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- Definition Total allowance for credit loss period increase (decrease) + References No definition available. + Details
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- Definition Total credit loss provision + References No definition available. + Details
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- Definition Amount of allowance for credit loss of accounts and financing receivables. Includes, but is not limited to, notes and loan receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss on net investment in direct financing lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 35 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123416613&loc=SL77930333-209968 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 25 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123408481&loc=SL77919132-209958 + Details
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- Definition Amount of allowance for credit loss on net investment in direct financing lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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- Definition Amount of allowance for credit loss on net investment in sales-type and direct financing leases. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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- Definition Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121611286&loc=d3e11927-110247 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82919202-210446 + Details
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