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Revenues - Schedule of Changes in Estimated Contract Earnings (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Apr. 03, 2026
Mar. 28, 2025
Apr. 03, 2026
Mar. 28, 2025
Revenue from Contract with Customer [Abstract]        
Favorable earnings at completion adjustments $ 72 $ 48 $ 119 $ 68
Unfavorable earnings at completion adjustments (50) (27) (74) (40)
Net favorable adjustments $ 22 $ 21 $ 45 $ 28
Impact on diluted earnings per share attributable to common shareholders (in dollars per share) $ 0.07 $ 0.07 $ 0.15 $ 0.09