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Financial Instruments Summary of Estimated Fair Value of Long-term Obligations and Other Short-term Borrowings (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Jun. 30, 2024
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Carrying Amount of Long-Term and other Short-Term Borrowings | $ 7,606 | $ 5,092
Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Estimated fair value | $ 7,388 | $ 4,891

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