Commitments and Contingencies - Schedule of Cash Deposits Paid of Countervailing and Anti-dumping Duties (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Commitments And Contingencies [Line Items] | ||||||
| Cash deposits paid | [1] | $ 33 | $ 19 | $ 100 | $ 53 | |
| Net cash deposits paid recognized as receivable | (7) | (5) | (19) | (13) | ||
| Cash deposits | 26 | 14 | 81 | 40 | ||
| Countervailing Duties [Member] | ||||||
| Commitments And Contingencies [Line Items] | ||||||
| Cash deposits paid | [1] | 14 | 8 | 42 | 24 | |
| Net cash deposits paid recognized as receivable | (3) | (2) | (10) | (6) | ||
| Cash deposits | 11 | 6 | 32 | 18 | ||
| Anti-dumping Duties [Member] | ||||||
| Commitments And Contingencies [Line Items] | ||||||
| Cash deposits paid | [1] | 19 | 11 | 58 | 29 | |
| Net cash deposits paid recognized as receivable | (4) | (3) | (9) | (7) | ||
| Cash deposits | $ 15 | $ 8 | $ 49 | $ 22 | ||
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