Schedule II—Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Accounts Receivable—Allowance for Doubtful Receivables | |||
| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance at beginning of period | $ 22 | $ 36 | $ 34 |
| Additions charged to expenses | 3 | 12 | 10 |
| Deductions from reserves | (7) | (26) | (8) |
| Balance at end of period | 18 | 22 | 36 |
| Deferred Tax Assets—Valuation Allowance | |||
| SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] | |||
| Balance at beginning of period | 748 | 729 | 695 |
| Additions charged to expenses | 74 | 103 | 47 |
| Deductions from reserves | (158) | (84) | (13) |
| Balance at end of period | $ 664 | $ 748 | $ 729 |