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Financial Derivative Instruments - Fair Values of Fuel Derivatives Amounts Posted as Collateral (Details) $ in Millions | Mar. 31, 2022 USD ($)
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If credit rating is non-investment grade, fair value of fuel derivative level at which: |
Maximum sum of derivatives of counterparty to be included in other | $ 16
Letter of credit substitution percentage | 100.00%
Cash collateral percentage | 100.00%
Fuel derivative contracts |
Schedule Of Fair Values Of Fuel Derivatives Amounts Posted As Collateral And Collateral Posting Thresholds [Line Items] |
Fair value of fuel derivatives | $ 1,273
Cash collateral held from CP | 560
Fuel derivative contracts | Counterparty A |
Schedule Of Fair Values Of Fuel Derivatives Amounts Posted As Collateral And Collateral Posting Thresholds [Line Items] |
Fair value of fuel derivatives | 315
Cash collateral held from CP | 341
Fuel derivative contracts | Counterparty A | Minimum |
If credit rating is investment grade, fair value of fuel derivative level at which: |
Cash is provided to CP | (100)
Cash is received from CP | 0
Fuel derivative contracts | Counterparty B |
Schedule Of Fair Values Of Fuel Derivatives Amounts Posted As Collateral And Collateral Posting Thresholds [Line Items] |
Fair value of fuel derivatives | 161
Cash collateral held from CP | 25
Fuel derivative contracts | Counterparty B | Minimum |
If credit rating is investment grade, fair value of fuel derivative level at which: |
Cash is provided to CP | (50)
Cash is received from CP | 150
Fuel derivative contracts | Counterparty C |
Schedule Of Fair Values Of Fuel Derivatives Amounts Posted As Collateral And Collateral Posting Thresholds [Line Items] |
Fair value of fuel derivatives | 303
Cash collateral held from CP | 84
Fuel derivative contracts | Counterparty C | Minimum |
If credit rating is investment grade, fair value of fuel derivative level at which: |
Cash is provided to CP | (75)
Cash is received from CP | 250
Fuel derivative contracts | Counterparty D |
Schedule Of Fair Values Of Fuel Derivatives Amounts Posted As Collateral And Collateral Posting Thresholds [Line Items] |
Fair value of fuel derivatives | 124
Cash collateral held from CP | 19
Fuel derivative contracts | Counterparty D | Minimum |
If credit rating is investment grade, fair value of fuel derivative level at which: |
Cash is provided to CP | (125)
Cash is received from CP | 125
Fuel derivative contracts | Counterparty E |
Schedule Of Fair Values Of Fuel Derivatives Amounts Posted As Collateral And Collateral Posting Thresholds [Line Items] |
Fair value of fuel derivatives | 146
Cash collateral held from CP | 58
Fuel derivative contracts | Counterparty E | Minimum |
If credit rating is investment grade, fair value of fuel derivative level at which: |
Cash is provided to CP | (40)
Cash is received from CP | 100
Fuel derivative contracts | Counterparty F |
Schedule Of Fair Values Of Fuel Derivatives Amounts Posted As Collateral And Collateral Posting Thresholds [Line Items] |
Fair value of fuel derivatives | 96
Cash collateral held from CP | 33
Fuel derivative contracts | Counterparty F | Minimum |
If credit rating is investment grade, fair value of fuel derivative level at which: |
Cash is provided to CP | (65)
Cash is received from CP | 70
Fuel derivative contracts | Counterparty G |
Schedule Of Fair Values Of Fuel Derivatives Amounts Posted As Collateral And Collateral Posting Thresholds [Line Items] |
Fair value of fuel derivatives | 101
Cash collateral held from CP | 0
Fuel derivative contracts | Counterparty G | Minimum |
If credit rating is investment grade, fair value of fuel derivative level at which: |
Cash is provided to CP | (100)
Cash is received from CP | 100
Fuel derivative contracts | Counterparty Other |
Schedule Of Fair Values Of Fuel Derivatives Amounts Posted As Collateral And Collateral Posting Thresholds [Line Items] |
Fair value of fuel derivatives | 27
Cash collateral held from CP | $ 0

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- Definition Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226006-175313 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=125515794&loc=d3e41678-113959 + Details
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