CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
Net sales	$ 1,840.8	$ 1,635.9	$ 5,067.4	$ 4,635.3
Cost of sales	1,234.7	1,098.6	3,392.8	3,141.3
Gross profit	606.1	537.3	1,674.6	1,494.0
Acquisition-related expenses		6.3	4.0	36.6
Selling, general and administrative expenses	228.2	204.7	642.4	591.3
Operating income	377.9	326.3	1,028.2	866.1
Interest expense	(24.6)	(18.1)	(67.3)	(54.2)
Other income, net	5.1	2.3	12.9	5.0
Income before income taxes	358.4	310.5	973.8	816.9
Provision for income taxes	(78.1)	(83.4)	(212.7)	(222.6)
Net income	280.3	227.1	761.1	594.3
Less: Net income attributable to noncontrolling interests	(2.8)	(2.8)	(7.2)	(6.8)
Net income attributable to Amphenol Corporation	$ 277.5	$ 224.3	$ 753.9	$ 587.5
Net income per common share - Basic (in dollars per share)	$ 0.91	$ 0.73	$ 2.47	$ 1.91
Weighted average common shares outstanding - Basic (in shares)	305.0	308.9	305.8	308.3
Net income per common share - Diluted (in dollars per share)	$ 0.88	$ 0.71	$ 2.39	$ 1.86
Weighted average common shares outstanding - Diluted (in shares)	315.7	315.7	316.1	315.1
Dividends declared per common share (in dollars per share)	$ 0.19	$ 0.14	$ 0.51	$ 0.42