v3.26.3
Earnings Per Share - Schedule of Weighted Average Number of Shares (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Basic        
Net loss attributable to Boeing shareholders $ (116) $ (5,337) $ (564) $ (5,985)
Less: Mandatory convertible preferred stock dividends accumulated during the period 87 87 259 259
Less: earnings available to participating securities
Net loss available to common shareholders $ (203) $ (5,424) $ (823) $ (6,244)
Basic        
Basic weighted average shares outstanding (in shares) 792.9 760.1 790.6 756.9
Participating securities (in shares) 0.2 0.2 0.2 0.2
Basic weighted average common shares outstanding (in shares) 792.7 759.9 790.4 756.7
Diluted        
Diluted weighted average shares outstanding (in shares) 792.9 760.1 790.6 756.9
Participating securities (in shares) 0.2 0.2 0.2 0.2
Diluted weighted average common shares outstanding (in shares) 792.7 759.9 790.4 756.7
Basic net loss per share (in dollars per share) $ (0.26) $ (7.14) $ (1.04) $ (8.25)
Diluted net loss per share (in dollars per share) $ (0.26) $ (7.14) $ (1.04) $ (8.25)