Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Condensed Consolidated Statements of Income
Net sales	$ 2,100.6	$ 2,129.0	$ 6,074.4	$ 5,977.3
Cost of sales	1,438.7	1,440.8	4,137.1	4,037.4
Gross profit	661.9	688.2	1,937.3	1,939.9
Acquisition-related expenses	0.0	0.0	25.4	0.0
Selling, general and administrative expenses	248.3	244.0	722.5	710.6
Operating income	413.6	444.2	1,189.4	1,229.3
Interest expense	(29.7)	(24.8)	(89.5)	(75.3)
Loss on early extinguishment of debt	(14.3)	0.0	(14.3)	0.0
Other income, net	4.5	0.2	7.6	2.5
Income before income taxes	374.1	419.6	1,093.2	1,156.5
Provision for income taxes	(91.8)	(100.0)	(250.0)	(280.8)
Net income	282.3	319.6	843.2	875.7
Less: Net income attributable to noncontrolling interests	(2.0)	(3.0)	(6.9)	(8.8)
Net income attributable to Amphenol Corporation	$ 280.3	$ 316.6	$ 836.3	$ 866.9
Net income per common share - Basic (in dollars per share)	$ 0.95	$ 1.05	$ 2.81	$ 2.87
Weighted average common shares outstanding - Basic (in shares)	296.6	300.5	297.6	301.7
Net income per common share - Diluted (in dollars per share)	$ 0.92	$ 1.01	$ 2.72	$ 2.76
Weighted average common shares outstanding - Diluted (in shares)	306.2	312.4	307.8	313.6