Fair Value (Tables)
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6 Months Ended |
Jun. 30, 2025 |
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| Fair Value Disclosures [Abstract] |
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| Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] |
The fair value of assets and liabilities at June 30, 2025 and December 31, 2024 measured on a recurring basis and the respective category within the fair value hierarchy for IPALCO was determined as follows:
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fair Value as of June 30, 2025 | | Fair Value as of December 31, 2024 | | Level 1 | | Level 2 | | Level 3 | | Total | | Level 1 | | Level 2 | | Level 3 | | Total | | (In Thousands) | | Financial assets: | | | | | | | | | | | | | | | | | VEBA investments: | | | | | | | | | | | | | | | | | Money market funds | $ | 102 | | | $ | — | | | $ | — | | | $ | 102 | | | $ | 86 | | | $ | — | | | $ | — | | | $ | 86 | | | Mutual funds | 3,929 | | | — | | | — | | | 3,929 | | | 3,947 | | | — | | | — | | | 3,947 | | | Total VEBA investments | 4,031 | | | — | | | — | | | 4,031 | | | 4,033 | | | — | | | — | | | 4,033 | | | FTRs | — | | | — | | | 4,304 | | | 4,304 | | | — | | | — | | | 1,526 | | | 1,526 | | | | | | | | | | | | | | | | | | | Total financial assets measured at fair value | $ | 4,031 | | | $ | — | | | $ | 4,304 | | | $ | 8,335 | | | $ | 4,033 | | | $ | — | | | $ | 1,526 | | | $ | 5,559 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| Schedule Of Face And Fair Value Of Debt |
The following table shows the face value and the fair value of fixed-rate and variable-rate indebtedness (Level 2) for the periods ending: | | | | | | | | | | | | | | | | | June 30, 2025 | December 31, 2024 | | | Face Value | Fair Value | Face Value | Fair Value | | | (In Thousands) | | Fixed-rate | $ | 3,638,800 | | $ | 3,464,554 | | $ | 3,638,800 | | $ | 3,404,473 | | | Variable-rate | 300,000 | | 300,000 | | 500,000 | | 500,000 | | | Total indebtedness | $ | 3,938,800 | | $ | 3,764,554 | | $ | 4,138,800 | | $ | 3,904,473 | |
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| Fair Value, Assets Measured on Recurring Basis |
The following table presents a roll forward of financial instruments, measured at fair value on a recurring basis, classified as Level 3 in the fair value hierarchy (note, amounts in this table indicate carrying values, which approximate fair values): | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, | Six Months Ended June 30, | | 2025 | 2024 | 2025 | 2024 | | | (In Thousands) | | Beginning Balance | | $ | 398 | | $ | 393 | | $ | 1,526 | | $ | 1,388 | | | Issuances | | 4,718 | | 3,811 | | 4,718 | | 3,811 | | | Settlements | | (812) | | (236) | | (1,940) | | (1,231) | | | Ending Balance | | $ | 4,304 | | $ | 3,968 | | $ | 4,304 | | $ | 3,968 | | | | | | | |
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