Earnings Per Share, Reconciliation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share
Net income from continuing operations attributable to Amphenol Corporation	$ 1,902.3	$ 1,569.4	$ 1,203.4
Income from discontinued operations attributable to Amphenol Corporation, net of income taxes of ($3.2) for 2021	0.0	21.4	0.0
Income taxes on income from discontinued operations attributable to Amphenol Corporation		3.2
Net income attributable to Amphenol Corporation	$ 1,902.3	$ 1,590.8	$ 1,203.4
Weighted average common shares outstanding - Basic (in shares)	596.2	597.9	596.1
Effect of dilutive stock options (in shares)	24.8	27.6	18.9
Weighted average common shares outstanding - Diluted (in shares)	621.0	625.5	615.0
Net income per common share attributable to Amphenol Corporation - Basic:
Net income per common share attributable to Amphenol Corporation - Basic, Continuing operations (in dollars per share)	$ 3.19	$ 2.62	$ 2.02
Net income per common share attributable to Amphenol Corporation - Basic, Discontinued operations, net of income taxes (in dollars per share)	0	0.04	0
Net income per common share attributable to Amphenol Corporation - Basic (in dollars per share)	3.19	2.66	2.02
Net income per common share attributable to Amphenol Corporation - Diluted:
Net income per common share attributable to Amphenol Corporation - Diluted, Continuing operations (in dollars per share)	3.06	2.51	1.96
Net income per common share attributable to Amphenol Corporation - Diluted, Discontinued operations, net of income taxes (in dollars per share)	0	0.03	0
Net income per common share attributable to Amphenol Corporation - Diluted (in dollars per share)	$ 3.06	$ 2.54	$ 1.96
Anti-dilutive common shares
Anti-dilutive stock options, excluded from the computations of earnings per share (in shares)	9.0	3.5	9.4