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v3.22.2.2

Fair Value Measurements - Level 3 Reconciliation (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
LME Swap Assets [Member] |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Balance, beginning | $ 1.6 |  | $ 0.0 |
Total realized/unrealized gains (losses) |  |  |  |
Included in net income (loss) | 1.6 |  | 1.6 |
Purchases, sales, settlements |  |  |  |
Purchases | 0.0 |  |  |
Sales | 0.0 |  |  |
Settlements | 0.0 |  |  |
Transfers into Level 3 | 0.0 |  | 1.6 |
Transfers out of Level 3 | 0.0 |  | 0.0 |
Balance, ending | 3.2 |  | 3.2 |
Change in unrealized gains (losses) | 1.6 |  | 1.6 |
Nord Pool Swap [Member] |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Balance, beginning |  | $ 1.5 | 0.2 | $ 0.0
Total realized/unrealized gains (losses) |  |  |  |
Included in net income (loss) |  | 0.0 | 0.0 | 0.0
Purchases, sales, settlements |  |  |  |
Purchases |  | 0.0 |  | 0.0
Sales |  | 0.0 |  | 0.0
Settlements |  | 0.0 |  | 0.0
Transfers into Level 3 |  | 0.0 | 0.0 | 1.5
Transfers out of Level 3 |  | (1.5) | (0.2) | (1.5)
Balance, ending | 0.0 | 0.0 | 0.0 | 0.0
Change in unrealized gains (losses) |  | 0.0 | 0.0 | 0.0
LME Swap [Member] |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Balance, beginning | (3.8) | (17.9) | (5.1) | 2.9
Total realized/unrealized gains (losses) |  |  |  |
Included in net income (loss) | 1.5 | (7.7) | 5.3 | (28.0)
Purchases, sales, settlements |  |  |  |
Purchases | 0.0 | 0.0 |  | 0.0
Sales | 0.0 | 0.0 |  | 0.0
Settlements | 0.0 | 0.0 |  | 0.0
Transfers into Level 3 | 0.0 | 0.0 | (2.5) | (1.0)
Transfers out of Level 3 | 0.0 | 11.0 | 0.0 | 11.5
Balance, ending | (2.3) | (14.6) | (2.3) | (14.6)
Change in unrealized gains (losses) | 1.5 | (7.7) | 5.3 | (28.0)
FX Swap [Member] |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Balance, beginning |  | (0.4) | (0.2) | 0.1
Total realized/unrealized gains (losses) |  |  |  |
Included in net income (loss) |  | (0.5) | 0.0 | (0.5)
Purchases, sales, settlements |  |  |  |
Purchases |  | 0.0 |  | 0.0
Sales |  | 0.0 |  | 0.0
Settlements |  | 0.0 |  | 0.0
Transfers into Level 3 |  | 0.0 | 0.0 | (0.4)
Transfers out of Level 3 |  | 0.0 | 0.2 | (0.1)
Balance, ending | 0.0 | (0.9) | 0.0 | (0.9)
Change in unrealized gains (losses) |  | $ (0.5) | 0.0 | $ (0.5)
Casthouse Hedges [Member] |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |
Balance, beginning | 0.0 |  | 0.0 |
Total realized/unrealized gains (losses) |  |  |  |
Included in net income (loss) | 0.0 |  | 0.0 |
Purchases, sales, settlements |  |  |  |
Purchases | 0.0 |  | 0.0 |
Sales | 0.0 |  | 0.0 |
Settlements | 0.0 |  | 0.0 |
Transfers into Level 3 | 0.0 |  | 0.0 |
Transfers out of Level 3 | 0.0 |  | 0.0 |
Balance, ending | 0.0 |  | 0.0 |
Change in unrealized gains (losses) | $ 0.0 |  | $ 0.0 |

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- Definition Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258 + Details
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- Definition Amount of purchases of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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- Definition Amount of sales of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258 + Details
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- Definition Amount of settlements of financial instrument classified as a derivative asset (liability) after deduction of derivative liability, measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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- Definition Amount of transfers of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) into level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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