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Derivative Assets And Liabilities Table - Partnership's Derivative Assets and Liabilities Amount of Gain (Loss) Recognized (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Amount of Gain/(Loss) Recognized in Income on Derivatives |  | $ (12) | $ 25
Gain on interest rate derivative | [1] | 0 | 9
Cost of Sales |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net |  | $ (12) | $ 16
[1] | This interest rate derivative was terminated by USAC in August 2024.

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