Earnings Per Share, Reconciliation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share
Net Income (Loss)	$ 460.5	$ 472.5	$ 899.7	$ 898.2
Weighted average common shares outstanding - Basic (in shares)	595.0	596.2	595.0	597.3
Effect of dilutive stock options (in shares)	23.2	23.5	24.1	25.3
Weighted average common shares outstanding - Diluted (in shares)	618.2	619.7	619.1	622.6
Net income attributable to Amphenol Corporation per common share - Basic:
Net income attributable to Amphenol Corporation per common share - Basic (in dollars per share)	$ 0.77	$ 0.79	$ 1.51	$ 1.50
Net income attributable to Amphenol Corporation per common share - Diluted:
Net income attributable to Amphenol Corporation per common share - Diluted (in dollars per share)	$ 0.74	$ 0.76	$ 1.45	$ 1.44
Anti-dilutive common shares
Anti-dilutive stock options, excluded from the computations of earnings per share (in shares)	10.0	11.1	8.8	7.6