CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - Southwest - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Amortization of prior service cost, tax | $ 11 | $ 11 | $ 22 | $ 22 |
| Amortization of net actuarial loss, tax | 606 | 226 | 1,212 | 452 |
| Regulatory adjustment, tax | 7,015 | (152) | 6,540 | (304) |
| Southwest Gas Corporation | ||||
| Amortization of prior service cost, tax | 11 | 11 | 22 | 22 |
| Amortization of net actuarial loss, tax | 606 | 226 | 1,212 | 452 |
| Regulatory adjustment, tax | $ 7,015 | $ (152) | $ 6,540 | $ (304) |