v3.26.3
Earnings Per Share (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
Earnings Per Share        
Net Income (Loss) $ 2,034.3 $ 1,245.7 $ 4,736.5 $ 3,074.8
Weighted average common shares outstanding - Basic (in shares) 2,467.2 2,443.7 2,462.0 2,431.3
Effect of dilutive stock options (in shares) 115.7 121.8 118.2 116.3
Weighted average common shares outstanding - Diluted (in shares) 2,582.9 2,565.5 2,580.2 2,547.6
Net income attributable to Amphenol Corporation per common share - Basic        
Net income attributable to Amphenol Corporation per common share - Basic (in dollars per share) $ 0.82 $ 0.51 $ 1.92 $ 1.26
Net income attributable to Amphenol Corporation per common share - Diluted        
Net income attributable to Amphenol Corporation per common share - Diluted (in dollars per share) $ 0.79 $ 0.49 $ 1.84 $ 1.21
Anti-dilutive common shares        
Anti-dilutive stock options, excluded from the computations of earnings per share (in shares) 12.7 10.6 6.4 14.6