Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Condensed Consolidated Statements of Income
Net sales	$ 1,958.5	$ 1,866.9
Cost of sales	1,330.7	1,260.0
Gross profit	627.8	606.9
Acquisition-related expenses	16.5
Selling, general and administrative expenses	235.1	230.0
Operating income	376.2	376.9
Interest expense	(29.7)	(24.5)
Other income, net	3.0	2.3
Income before income taxes	349.5	354.7
Provision for income taxes	(79.6)	(86.4)
Net income	269.9	268.3
Less: Net income attributable to noncontrolling interests	(2.4)	(2.7)
Net income attributable to Amphenol Corporation	$ 267.5	$ 265.6
Net income per common share — Basic (in dollars per share)	$ 0.90	$ 0.87
Weighted average common shares outstanding — Basic (in shares)	298.1	303.7
Net income per common share — Diluted (in dollars per share)	$ 0.87	$ 0.84
Weighted average common shares outstanding — Diluted (in shares)	308.6	316.0