CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
Net sales	$ 1,866.9	$ 1,560.1
Cost of sales	1,260.0	1,044.2
Gross profit	606.9	515.9
Selling, general and administrative expenses	230.0	201.8
Operating income	376.9	314.1
Interest expense	(24.5)	(19.3)
Other income, net	2.3	3.6
Income before income taxes	354.7	298.4
Provision for income taxes	(86.4)	(71.1)
Net income	268.3	227.3
Less: Net income attributable to noncontrolling interests	(2.7)	(2.4)
Net income attributable to Amphenol Corporation	$ 265.6	$ 224.9
Net income per common share — Basic (in dollars per share)	$ 0.87	$ 0.73
Weighted average common shares outstanding — Basic (in shares)	303.7	306.6
Net income per common share — Diluted (in dollars per share)	$ 0.84	$ 0.71
Weighted average common shares outstanding — Diluted (in shares)	316.0	316.4
Dividends declared per share (in dollars per share)	$ 0.19	$ 0.16