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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2025
Fair Value Measurements [Abstract] |
Fair Value, by Balance Sheet Grouping [Table Text Block] | The following tables summarize the gross fair value of our financial assets and liabilities measured and recorded at fair value on a recurring basis as of September 30, 2025 and December 31, 2024 based on inputs used to derive their fair values:
|  |  | Fair Value Measurements at September 30, 2025
| Fair Value Total |  | Level 1 |  | Level 2 |  | Level 3
Assets: |  |  |  |  |  |  |
Commodity derivatives: |  |  |  |  |  |  |
Natural Gas: |  |  |  |  |  |  |
Basis Swaps IFERC/NYMEX | $ | 12 |  |  | $ | 12 |  |  | $ | — |  |  | $ | — |
Swing Swaps IFERC | 4 |  |  | 4 |  |  | — |  |  | — |
Fixed Swaps/Futures | 46 |  |  | 46 |  |  | — |  |  | — |
Power: |  |  |  |  |  |  |
Forwards | 42 |  |  | — |  |  | 42 |  |  | — |
Futures | 29 |  |  | 29 |  |  | — |  |  | — |
Options – Calls | 1 |  |  | 1 |  |  | — |  |  | — |
NGLs – Forwards/Swaps | 215 |  |  | 195 |  |  | 20 |  |  | — |
Refined Products – Futures | 8 |  |  | 8 |  |  | — |  |  | — |
Crude – Forwards/Swaps | 27 |  |  | 22 |  |  | 5 |  |  | — |
Total commodity derivatives | 384 |  |  | 317 |  |  | 67 |  |  | — |
Other non-current assets | 215 |  |  | 215 |  |  | — |  |  | — |
Total assets | $ | 599 |  |  | $ | 532 |  |  | $ | 67 |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |
Commodity derivatives: |  |  |  |  |  |  |
Natural Gas: |  |  |  |  |  |  |
Basis Swaps IFERC/NYMEX | $ | (20) |  |  | $ | (20) |  |  | $ | — |  |  | $ | — |
Swing Swaps IFERC | (3) |  |  | (3) |  |  | — |  |  | — |
Fixed Swaps/Futures | (4) |  |  | (4) |  |  | — |  |  | — |
Power: |  |  |  |  |  |  |
Forwards | (41) |  |  | — |  |  | (41) |  |  | — |
Futures | (29) |  |  | (29) |  |  | — |  |  | — |
Options – Calls | (1) |  |  | (1) |  |  | — |  |  | — |
NGLs – Forwards/Swaps | (159) |  |  | (154) |  |  | (5) |  |  | — |
Refined Products – Futures | (18) |  |  | (18) |  |  | — |  |  | — |
Crude – Forwards/Swaps | (30) |  |  | (25) |  |  | (5) |  |  | — |
Total commodity derivatives | (305) |  |  | (254) |  |  | (51) |  |  | — |
Total liabilities | $ | (305) |  |  | $ | (254) |  |  | $ | (51) |  |  | $ | — |
|  |  | Fair Value Measurements at December 31, 2024
| Fair Value Total |  | Level 1 |  | Level 2 |  | Level 3
Assets: |  |  |  |  |  |  |
Commodity derivatives: |  |  |  |  |  |  |
Natural Gas: |  |  |  |  |  |  |
Basis Swaps IFERC/NYMEX | $ | 6 |  |  | $ | 6 |  |  | $ | — |  |  | $ | — |
Swing Swaps IFERC | 4 |  |  | 4 |  |  | — |  |  | — |
Fixed Swaps/Futures | 10 |  |  | 10 |  |  | — |  |  | — |
Power: |  |  |  |  |  |  |
Forwards | 39 |  |  | 39 |  |  | — |  |  | — |
Futures | 10 |  |  | 10 |  |  | — |  |  | — |
NGLs – Forwards/Swaps | 166 |  |  | 166 |  |  | — |  |  | — |
Refined Products – Futures | 3 |  |  | 3 |  |  | — |  |  | — |
Crude – Forwards/Swaps | 25 |  |  | 25 |  |  | — |  |  | — |
Total commodity derivatives | 263 |  |  | 263 |  |  | — |  |  | — |
Other non-current assets | 212 |  |  | 212 |  |  | — |  |  | — |
Total assets | $ | 475 |  |  | $ | 475 |  |  | $ | — |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |
Commodity derivatives: |  |  |  |  |  |  |
Natural Gas: |  |  |  |  |  |  |
Basis Swaps IFERC/NYMEX | $ | (11) |  |  | $ | (11) |  |  | $ | — |  |  | $ | — |
Swing Swaps IFERC | (11) |  |  | (11) |  |  | — |  |  | — |
Fixed Swaps/Futures | (9) |  |  | (9) |  |  | — |  |  | — |
Power: |  |  |  |  |  |  |
Forwards | (38) |  |  | (38) |  |  | — |  |  | — |
Futures | (10) |  |  | (10) |  |  | — |  |  | — |
NGLs – Forwards/Swaps | (170) |  |  | (170) |  |  | — |  |  | — |
Refined Products – Futures | (9) |  |  | (9) |  |  | — |  |  | — |
Crude – Forwards/Swaps | (35) |  |  | (35) |  |  | — |  |  | — |
Total commodity derivatives | (293) |  |  | (293) |  |  | — |  |  | — |
Total liabilities | $ | (293) |  |  | $ | (293) |  |  | $ | — |  |  | $ | — |

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