CREDIT LOSSES - ROLLFORWARD OF ALLOWANCES (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Accounts Receivable, Allowance for Credit Loss [Roll Forward] | ||||
| Change in allowance for credit losses | $ (14.0) | |||
| Utility segment | ||||
| Accounts Receivable, Allowance for Credit Loss [Roll Forward] | ||||
| Balance at beginning of period | $ 38.8 | $ 37.9 | $ 39.7 | 46.9 |
| Provision for credit losses | 46.6 | 17.0 | 90.9 | 29.7 |
| Write-offs charged against the allowance | (31.2) | (28.8) | (57.7) | (52.0) |
| Recoveries of amounts previously written off | 8.4 | 8.8 | 17.3 | 16.3 |
| Balance at end of period | 37.7 | 32.9 | 37.7 | 32.9 |
| Utility segment | Uncollectible expense | ||||
| Accounts Receivable, Allowance for Credit Loss [Roll Forward] | ||||
| Provision for credit losses deferred for future recovery or refund | $ (24.9) | $ (2.0) | $ (52.5) | $ (8.0) |