| Assets | — | — |
| Current assets | — | — |
| Cash and cash equivalents | 3,317a | 1,475a |
| Short-term investments | 18.4a | 185.2a |
| Total cash, cash equivalents and short-term investments | 3,335.4a | 1,660.2a |
| Accounts receivable, less allowance for doubtful accounts of $66.5 and $68.4, respectively | 3,287.9a | 2,618.4a |
| Inventories | 2,545.7a | 2,167.1a |
| Prepaid expenses and other current assets | 517a | 389.6a |
| Total current assets | 9,686a | 6,835.3a |
| Property, plant and equipment, net | 1,711.8a | 1,314.7a |
| Goodwill | 8,236.2a | 7,092.4a |
| Other intangible assets, net | 1,225.1a | 834.8a |
| Other long-term assets | 581.1a | 449.2a |
| Total assets | 21,440.2a | 16,526.4a |
| Liabilities, redeemable noncontrolling interests and equity | — | — |
| Current liabilities | — | — |
| Accounts payable | 1,819.4a | 1,350.9a |
| Accrued salaries, wages and employee benefits | 529.8a | 412.8a |
| Accrued income taxes | 199a | 166a |
| Accrued dividends | 199.5a | 131.7a |
| Other accrued expenses | 934.4a | 737.5a |
| Current portion of long-term debt | 401.7a | 353.8a |
| Total current liabilities | 4,083.8a | 3,152.7a |
| Long-term debt, less current portion | 6,484.4a | 3,983.5a |
| Accrued pension and postretirement benefit obligations | 129.8a | 143a |
| Deferred income taxes | 376.7a | 367a |
| Other long-term liabilities | 509.4a | 453.7a |
| Total liabilities | 11,584.1a | 8,099.9a |
| Redeemable noncontrolling interests | 8.7a | 30.7a |
| Equity | — | — |
| Class A Common Stock, $0.001 par value, 2,000.0 shares authorized; 1,212.9 shares issued and 1,209.3 shares outstanding at December 31, 2024; 1,201.3 shares issued and 1,197.8 shares outstanding at December 31, 2023 | 1.2a | 1.2a |
| Additional paid-in capital | 3,601.8a | 3,100.6a |
| Retained earnings | 7,105a | 5,921.1a |
| Treasury stock, at cost; 3.6 shares and 3.5 shares as of December 31, 2024 and 2023, respectively | -199.7a | -142.8a |
| Accumulated other comprehensive loss | -716.3a | -533.6a |
| Total stockholders’ equity attributable to Amphenol Corporation | 9,792a | 8,346.5a |
| Noncontrolling interests | 55.4a | 49.3a |
| Total equity | 9,847.4a | 8,395.8a |
| Total liabilities, redeemable noncontrolling interests and equity | 21,440.2a | 16,526.4a |