Other Income (Deductions), Net (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Other Income, Nonoperating [Line Items] | ||||
| NDT net income | $ 120 | $ 107 | $ 86 | $ 97 |
| Insurance settlements | 51 | 80 | 51 | 80 |
| Interest income | 4 | 4 | 11 | 10 |
| All other | 11 | 0 | 14 | (1) |
| Total other income (deductions), net | 186 | $ 191 | 162 | $ 186 |
| Operating Segments | Texas | ||||
| Other Income, Nonoperating [Line Items] | ||||
| Insurance settlements | 48 | 48 | ||
| Operating Segments | Asset Closure | ||||
| Other Income, Nonoperating [Line Items] | ||||
| Insurance settlements | $ 3 | $ 3 | ||