Commitments and Contingencies - Schedule of Cash Deposits Paid of Countervailing and Anti-dumping Duties (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Commitments And Contingencies [Line Items] | ||||||
| Cash deposits paid | [1] | $ 42 | $ 18 | $ 67 | $ 34 | |
| Net cash deposits paid recognized as receivable | (6) | (4) | (12) | (8) | ||
| Cash deposits | 36 | 14 | 55 | 26 | ||
| Countervailing Duties [Member] | ||||||
| Commitments And Contingencies [Line Items] | ||||||
| Cash deposits paid | [1] | 18 | 8 | 28 | 16 | |
| Net cash deposits paid recognized as receivable | (5) | (2) | (7) | (4) | ||
| Cash deposits | 13 | 6 | 21 | 12 | ||
| Anti-dumping Duties [Member] | ||||||
| Commitments And Contingencies [Line Items] | ||||||
| Cash deposits paid | [1] | 24 | 10 | 39 | 18 | |
| Net cash deposits paid recognized as receivable | (1) | (2) | (5) | (4) | ||
| Cash deposits | $ 23 | $ 8 | $ 34 | $ 14 | ||
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