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v3.22.2.2

Derivatives - Narrative (Details) € in Millions, $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2022 USD ($) | Sep. 30, 2022 USD ($) MWh t | Sep. 30, 2022 EUR (€) | Dec. 31, 2021 USD ($)
Derivative [Line Items] |  |  |  |
Restricted cash | $ 0.0 | $ 0.0 |  | $ 8.6
LME Swap [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Open position to offset fixed prices (in tonnes) | t |  | 148,416 |  |
Midwest Premium (MWP) [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Open position to offset fixed prices (in tonnes) | t |  | 48,750 |  |
Fixed For Floating Swaps [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Open position to offset fixed prices (in tonnes) | t |  | 1,014 |  |
Nordpool Power Price Swap [Member] | Grundartangi [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative liability (in MwH) | MWh |  | 1,239,497 |  |
Realized gain | 16.0 | $ 16.0 |  |
FX Swap [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative asset | € |  |  | € 37.9 |
Indiana Hub Power Price Swaps [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative liability (in MwH) | MWh |  | 219,360 |  |
USD ISK Forward Swap [Member] | Not designated as hedging instrument [Member] | Short [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, forward contracts | 52.0 | $ 52.0 |  |
USD Euro Forward Swap [Member] | Not designated as hedging instrument [Member] | Long [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, forward contracts | $ 13.8 | $ 13.8 |  |

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- Definition Fair value, after the effects of master netting arrangements, of a 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. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Amount of increase in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Nominal energy measure used to calculate payments on a derivative instrument. + References No definition available. + Details
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- Definition Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126999549&loc=SL98516268-108586 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(1)(a)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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