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v3.22.4

Fair Value Measurements - Level 3 Reconciliation (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) MT t | Dec. 31, 2021 USD ($) MT
LME forward financial sales contracts |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Balance as of January 1, 2022 | $ (5.1) |
Purchases, sales, settlements |  |
Balance as of December 31, 2022 | $ (2.8) | $ (5.1)
LME forward financial sales contracts | Level 3 |  |
Purchases, sales, settlements |  |
Derivative asset, percentage | 0.0858 |
LME forward financial sales contracts | Level 3 | Discounted Cash Flow |  |
Purchases, sales, settlements |  |
Derivative asset, percentage |  | 0.0858
FX Swap |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Balance as of January 1, 2022 | $ (0.2) | $ 0.1
Total realized/unrealized gains (losses) |  |
Included in net income (loss) | 0.0 | (0.6)
Purchases, sales, settlements |  |
Purchases | 0.0 | 0.0
Sales | 0.0 | 0.0
Settlements | 0.0 | 0.0
Transfers into Level 3 | 0.0 | (0.4)
Transfers out of Level 3 | 0.2 | 0.7
Balance as of December 31, 2022 | 0.0 | (0.2)
Change in unrealized gains (losses) | $ 0.0 | $ (0.6)
FX Swap | Level 3 |  |
Purchases, sales, settlements |  |
Derivative asset, percentage | 0.0858 |
FX Swap | Level 3 | Discounted Cash Flow |  |
Purchases, sales, settlements |  |
Derivative asset, percentage |  | 0.0858
Nordpool Power Price Swap |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Balance as of January 1, 2022 | $ 0.2 | $ 0.0
Total realized/unrealized gains (losses) |  |
Included in net income (loss) |  | 0.0
Purchases, sales, settlements |  |
Purchases |  | 0.0
Sales |  | 0.0
Settlements |  | 0.0
Transfers into Level 3 |  | 1.7
Transfers out of Level 3 |  | (1.5)
Balance as of December 31, 2022 | 0.0 | 0.2
Change in unrealized gains (losses) |  | 0.0
Nordpool Power Price Swap | Level 3 |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Balance as of January 1, 2022 | 0.2 |
Total realized/unrealized gains (losses) |  |
Included in net income (loss) | 0.0 |
Purchases, sales, settlements |  |
Purchases | 0.0 |
Sales | 0.0 |
Settlements | 0.0 |
Transfers into Level 3 | 0.0 |
Transfers out of Level 3 | (0.2) |
Balance as of December 31, 2022 | $ 0.0 | $ 0.2
Derivative asset, percentage | 0.0858 |
Change in unrealized gains (losses) | $ 0.0 |
Nordpool Power Price Swap | Level 3 | Measurement Input, Discount Rate |  |
Purchases, sales, settlements |  |
Derivative asset, percentage |  | 0.0858
Casthouse |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Balance as of January 1, 2022 | 0.0 |
Purchases, sales, settlements |  |
Balance as of December 31, 2022 | $ 0.0 | $ 0.0
Casthouse | Level 3 | Measurement Input, Discount Rate |  |
Purchases, sales, settlements |  |
Derivative asset, percentage | 0.0858 | 0
Contingent obligation |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Balance as of January 1, 2022 | $ 0.0 |
Purchases, sales, settlements |  |
Balance as of December 31, 2022 | $ 0.0 | $ 0.0
Contingent obligation | Level 3 | Minimum |  |
Purchases, sales, settlements |  |
Open position to offset fixed prices | MT | 0 | 14,000
Contingent obligation | Level 3 | Maximum |  |
Purchases, sales, settlements |  |
Open position to offset fixed prices | MT |  | 15,000
LME forward financial sales contracts |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Balance as of January 1, 2022 | $ 0.0 |
Total realized/unrealized gains (losses) |  |
Included in net income (loss) | 1.6 |
Purchases, sales, settlements |  |
Purchases | 0.0 |
Sales | 0.0 |
Settlements | 0.0 |
Transfers into Level 3 | 1.7 |
Transfers out of Level 3 | (1.5) |
Balance as of December 31, 2022 | 1.8 | $ 0.0
Change in unrealized gains (losses) | 1.6 |
LME Swap |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Balance as of January 1, 2022 | (5.1) | 2.9
Total realized/unrealized gains (losses) |  |
Included in net income (loss) | 5.3 | (28.7)
Purchases, sales, settlements |  |
Purchases | 0.0 | 0.0
Sales | 0.0 | 0.0
Settlements | 0.0 | 0.0
Transfers into Level 3 | (2.5) | (1.0)
Transfers out of Level 3 | (2.3) | 21.7
Balance as of December 31, 2022 | (4.6) | (5.1)
Change in unrealized gains (losses) | $ 5.3 | (28.7)
Open position to offset fixed prices | t | 111,741 |
Casthouse Hedges |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Balance as of January 1, 2022 | $ 0.0 |
Total realized/unrealized gains (losses) |  |
Included in net income (loss) | 0.0 |
Purchases, sales, settlements |  |
Purchases | 0.0 |
Sales | 0.0 |
Settlements | 0.0 |
Transfers into Level 3 | 0.0 |
Transfers out of Level 3 | 0.0 |
Balance as of December 31, 2022 | 0.0 | $ 0.0
Change in unrealized gains (losses) | $ 0.0 |

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