v3.23.1

Fair Value Measures and Disclosures (Details) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) kiloMetricTon MMBTU | Mar. 31, 2022 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2022 USD ($) MMBTU kiloMetricTon
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative Asset | $ 7 |  |  |  | $ 21
Derivative Liability | 29 |  |  |  | 8
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | (21) | $ (143) |  |  |
Realized Gain (Loss) on Cash Flow Hedging Instruments | (6) | (53) |  |  |
Unrealized Gain (Loss) on Derivatives | (20) | 2 |  |  |
Designated as Hedging Instrument | Aluminum Contract | Cash Flow Hedging |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative Asset | 0 |  |  |  | 0
Derivative Liability | (7) |  |  |  | $ (14)
Designated as Hedging Instrument | Aluminum Contract | Cash Flow Hedging | Other Comprehensive Income (Loss) |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | $ (9) | (156) |  |  |
Designated as Hedging Instrument | Aluminum Contract | Cash Flow Hedging | Other Assets |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount | 2 |  |  |  | 17
Designated as Hedging Instrument | Aluminum Contract | Cash Flow Hedging | Other Liabilities |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 337 |  |  |  | 368
Designated as Hedging Instrument | Aluminum Contract | Cash Flow Hedging | Sales |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Realized Gain (Loss) on Cash Flow Hedging Instruments | $ (1) | (54) |  |  |
Designated as Hedging Instrument | Aluminum Contract | Cash Flow Hedging | Cost of Sales |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Realized Gain (Loss) on Cash Flow Hedging Instruments | 0 | (1) |  |  |
Designated as Hedging Instrument | Commodity Contract | Cash Flow Hedging |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative Asset | (1) |  |  |  | $ (1)
Derivative Liability | 0 |  |  |  | $ 1
Designated as Hedging Instrument | Commodity Contract | Cash Flow Hedging | Other Comprehensive Income (Loss) |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | $ 1 | 0 |  |  |
Designated as Hedging Instrument | Commodity Contract | Cash Flow Hedging | Other Assets |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 1 |  |  |  | 1
Designated as Hedging Instrument | Commodity Contract | Cash Flow Hedging | Other Liabilities |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 2 |  |  |  | 3
Designated as Hedging Instrument | Energy Related Derivative | Cash Flow Hedging |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative Liability | $ 14 |  |  |  | $ 5
Designated as Hedging Instrument | Energy Related Derivative | Cash Flow Hedging | Other Comprehensive Income (Loss) |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | $ (13) | 13 |  |  |
Designated as Hedging Instrument | Energy Related Derivative | Cash Flow Hedging | Other Liabilities |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount | MMBTU | 2.3 |  |  |  | 6.3
Designated as Hedging Instrument | Energy Related Derivative | Cash Flow Hedging | Cost of Sales |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Realized Gain (Loss) on Cash Flow Hedging Instruments | $ 5 | 0 |  |  |
Not Designated as Hedging Instrument |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Unrealized Gain (Loss) on Derivatives | (20) | 5 |  |  |
Realized Gain (Loss) on Derivatives | 3 | (2) |  |  |
Not Designated as Hedging Instrument | Aluminum Contract |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative Asset | 4 |  |  |  | $ 6
Derivative Liability | $ 15 |  |  |  | $ 12
Not Designated as Hedging Instrument | Aluminum Contract | Other Assets |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 137 |  |  |  | 60
Not Designated as Hedging Instrument | Aluminum Contract | Other Liabilities |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount | kiloMetricTon | 113 |  |  |  | 53
Not Designated as Hedging Instrument | Aluminum Contract | Sales |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Unrealized Gain (Loss) on Derivatives | $ (5) | 2 |  |  |
Realized Gain (Loss) on Derivatives | 4 | (2) |  |  |
Not Designated as Hedging Instrument | Energy Related Derivative |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative Asset | 4 |  |  |  | $ 16
Derivative Liability | $ 7 |  |  |  | $ 4
Not Designated as Hedging Instrument | Energy Related Derivative | Other Assets |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount | MMBTU | 5.9 |  |  |  | 12.1
Not Designated as Hedging Instrument | Energy Related Derivative | Other Liabilities |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Derivative, Nonmonetary Notional Amount | MMBTU | 3.8 |  |  |  | 0.6
Not Designated as Hedging Instrument | Energy Related Derivative | Cost of Sales |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Unrealized Gain (Loss) on Derivatives | $ 15 | (3) |  |  |
Realized Gain (Loss) on Derivatives | 1 | 0 |  |  |
Not Designated as Hedging Instrument | Natural Gas Contract | Cost of Sales |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Unrealized Gain (Loss) on Derivatives |  | (5) | $ 2 | $ 6 |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net |  | $ 3 |  |  |
Reported Value Measurement |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | 197 |  |  |  | $ 261
Derivative Asset | 7 |  |  |  | 21
Other Short-term Borrowings | 50 |  |  |  | 0
Derivative Liability | 29 |  |  |  | 8
Debt, fair value | 1,597 |  |  |  | 1,597
Estimate of Fair Value Measurement |  |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |  |
Cash and Cash Equivalents, Fair Value Disclosure | 197 |  |  |  | 261
Derivative Asset | 7 |  |  |  | 21
Other Short-term Borrowings | 50 |  |  |  | 0
Derivative Liability | 29 |  |  |  | 8
Debt, fair value | $ 1,595 |  |  |  | $ 1,539

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