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Fair Value Measurements - Additional Information (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Jun. 30, 2024
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Net assets measured at fair value on a recurring basis | $ 3,000 | $ 2,900
Net Derivative Assets [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs | $ (1) | $ (1)

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