v3.22.4

Financial Instruments (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 USD ($) kiloMetricTon MMBTU | Mar. 31, 2022 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2022 USD ($) kiloMetricTon MMBTU | Dec. 31, 2021 USD ($) kiloMetricTon MMBTU | Dec. 31, 2020 USD ($)
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset | $ 5 |  |  | $ 5 | $ 1 |
Derivative Liability | 8 |  |  | 8 | 23 |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments |  |  |  | 95 | (161) | $ (2)
Realized Gain (Loss) on Cash Flow Hedging Instruments |  |  |  | 67 | (140) | (8)
Unrealized Gain (Loss) on Derivatives |  |  |  | 6 | 0 | 0
Aluminum Contract | Not Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset | 6 |  |  | 6 | 1 |
Derivative Liability | $ 12 |  |  | $ 12 | $ 3 |
Aluminum Contract | Not Designated as Hedging Instrument | Other Assets |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 60 |  |  | 60 | 14 |
Aluminum Contract | Not Designated as Hedging Instrument | Other Liabilities |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 53 |  |  | 53 | 19 |
Aluminum Contract | Not Designated as Hedging Instrument | Sales |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Unrealized Gain (Loss) on Derivatives | $ 4 |  |  |  |  |
Realized Gain (Loss) on Derivatives |  |  |  | $ 6 |  |
Aluminum Contract | Cash Flow Hedging | Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset | 0 |  |  | 0 | $ 0 |
Derivative Liability | $ (14) |  |  | $ (14) | $ 18 |
Aluminum Contract | Cash Flow Hedging | Designated as Hedging Instrument | Other Assets |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 17 |  |  | 17 | 0 |
Aluminum Contract | Cash Flow Hedging | Designated as Hedging Instrument | Other Liabilities |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 368 |  |  | 368 | 251 |
Aluminum Contract | Cash Flow Hedging | Designated as Hedging Instrument | Sales |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Realized Gain (Loss) on Cash Flow Hedging Instruments |  |  |  | $ 43 | $ (150) | 2
Aluminum Contract | Cash Flow Hedging | Designated as Hedging Instrument | Cost of Sales |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Realized Gain (Loss) on Cash Flow Hedging Instruments |  |  |  | (5) | (8) | 10
Aluminum Contract | Cash Flow Hedging | Designated as Hedging Instrument | Other Comprehensive Income (Loss) |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments |  |  |  | 81 | (160) | (7)
Energy Related Derivative | Not Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Liability | $ 4 |  |  | $ 4 | $ 0 |
Energy Related Derivative | Not Designated as Hedging Instrument | Other Liabilities |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | MMBTU | 0.6 |  |  | 0.6 | 0 |
Energy Related Derivative | Not Designated as Hedging Instrument | Cost of Sales |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Unrealized Gain (Loss) on Derivatives |  | $ 5 | $ 2 | $ 4 | $ 6 |
Realized Gain (Loss) on Derivatives |  |  |  | 3 |  |
Energy Related Derivative | Cash Flow Hedging | Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Liability | $ 5 |  |  | $ 5 | $ 2 |
Energy Related Derivative | Cash Flow Hedging | Designated as Hedging Instrument | Other Liabilities |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | MMBTU | 6.3 |  |  | 6.3 | 3.3 |
Energy Related Derivative | Cash Flow Hedging | Designated as Hedging Instrument | Cost of Sales |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Realized Gain (Loss) on Cash Flow Hedging Instruments |  |  |  | $ (20) | $ 0 | 0
Energy Related Derivative | Cash Flow Hedging | Designated as Hedging Instrument | Other Comprehensive Income (Loss) |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments |  |  |  | 16 | (2) | 0
Commodity Contract | Cash Flow Hedging | Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset | $ (1) |  |  | (1) | 0 |
Derivative Liability | $ 1 |  |  | $ 1 | $ 0 |
Commodity Contract | Cash Flow Hedging | Designated as Hedging Instrument | Other Assets |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 1 |  |  | 1 | 0 |
Commodity Contract | Cash Flow Hedging | Designated as Hedging Instrument | Other Liabilities |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 3 |  |  | 3 | 0 |
Commodity Contract | Cash Flow Hedging | Designated as Hedging Instrument | Cost of Sales |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Realized Gain (Loss) on Cash Flow Hedging Instruments |  |  |  | $ 1 | $ (2) | 0
Commodity Contract | Cash Flow Hedging | Designated as Hedging Instrument | Other Comprehensive Income (Loss) |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments |  |  |  | (2) | 1 | $ 5
Natural Gas Contract | Not Designated as Hedging Instrument |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative Asset | $ 16 |  |  | $ 16 |  |
Natural Gas Contract | Not Designated as Hedging Instrument | Other Assets |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount | MMBTU | 12.1 |  |  | 12.1 |  |
Natural Gas Contract | Not Designated as Hedging Instrument | Cost of Sales |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Unrealized Gain (Loss) on Derivatives |  |  |  | $ 16 |  |
Estimate of Fair Value Measurement |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | $ 261 |  |  | 261 | 335 |
Derivative Asset | 21 |  |  | 21 | 1 |
Derivative Liability | 8 |  |  | 8 | 23 |
Fair value of long-term debt | 1,539 |  |  | 1,539 | 1,692 |
Reported Value Measurement |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | 261 |  |  | 261 | 335 |
Derivative Asset | 21 |  |  | 21 | 1 |
Derivative Liability | 8 |  |  | 8 | 23 |
Fair value of long-term debt | $ 1,597 |  |  | $ 1,597 | $ 1,594 |

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