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Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Jan. 31, 2023
Jun. 30, 2022
Document and Entity Information      
Entity Registrant Name AMPHENOL CORPORATION    
Entity Central Index Key 0000820313    
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2022    
Entity File Number 1-10879    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 22-2785165    
Entity Address, Address Line One 358 Hall Avenue    
Entity Address, City or Town Wallingford    
Entity Address, State or Province CT    
Entity Address, Postal Zip Code 06492    
City Area Code 203    
Local Phone Number 265-8900    
Title of 12(b) Security Class A Common Stock, $0.001 par value    
Trading Symbol APH    
Security Exchange Name NYSE    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 33,606
Entity Common Stock, Shares Outstanding   594,604,514  
ICFR Auditor Attestation Flag true    
Auditor Name Deloitte & Touche LLP    
Auditor Firm ID 34    
Auditor Location Hartford, Connecticut    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Documents Incorporated by Reference

Portions of the Registrant’s definitive proxy statement, which is expected to be filed within 120 days following the end of the fiscal year covered by this report, are incorporated by reference into Part III hereof.