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Acquisitions, Pro Forma Financial Information (Details) - FCI Asia Pte Ltd (“FCI”) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Pro forma adjustments |  |
Net sales | $ 6,296.1 | $ 6,137.3
Net income attributable to Amphenol Corporation | $ 856.2 | $ 799.3
Net income per common share - Diluted | $ 2.72 | $ 2.53
Acquisition-related expenses included in reported results, but excluded from proforma amounts |  |
Pro forma adjustments |  |
Net income attributable to Amphenol Corporation | $ 33.1 | $ 5.7
Amortization expense related to acquired intangible assets not reflected in historical results, but included in pro forma amounts |  |
Pro forma adjustments |  |
Net income attributable to Amphenol Corporation |  | (8.8)
Interest income of funds used to fund the acquisition included in historical results, but excluded from pro forma amounts |  |
Pro forma adjustments |  |
Net income attributable to Amphenol Corporation |  | (11.6)
Other income included in historical results, but excluded from pro forma amounts |  |
Pro forma adjustments |  |
Net income attributable to Amphenol Corporation |  | $ (4.8)

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