v3.26.1
Research and Development
12 Months Ended
Jun. 30, 2026
Research and Development [Abstract]  
Research and Development Research and Development
Independent research and development costs amounted to $267 million in 2026, $240 million in 2025 and $253 million in 2024. Pre-production expense incurred in connection with development contracts amounted to $43 million in 2026, $58 million in 2025 and $45 million in 2024.