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Research and Development	12 Months Ended
Research and Development	Jun. 30, 2025
Research and Development [Abstract]
Research and Development	Research and Development Independent research and development costs amounted to $240 million in 2025, $253 million in 2024 and $258 million in 2023. Pre-production expense incurred in connection with development contracts amounted to $58 million in 2025, $45 million in 2024 and $73 million in 2023.