Receivables (Receivables Sold Under The Agreement) (Details) - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Receivables [Line Items] | ||
| Fair value of deferred proceeds | $ 235 | $ 163 |
| IPL [Member] | ||
| Receivables [Line Items] | ||
| Fair value of deferred proceeds | 235 | 163 |
| Receivables Sold [Member] | IPL [Member] | ||
| Receivables [Line Items] | ||
| Customer accounts receivable | 135 | 137 |
| Unbilled utility revenues | 114 | 108 |
| Receivables sold to third party | 249 | 245 |
| Less: cash proceeds | 1 | 70 |
| Deferred proceeds | 248 | 175 |
| Less: allowance for expected credit losses | 13 | 12 |
| Fair value of deferred proceeds | $ 235 | $ 163 |